safety and reliability.

Slewing bearing mechanism friction surface tectonic pattern classification:
Slewing mechanism friction surface structure, there are two types: conical friction joints and disc-shaped multi-plate friction joints. The basic principle is through spring pressure in the actuator between the friction surfaces have some friction torque, moment of resistance when turning the friction torque is less than the limit, no slipping. If more than this value is caused to slip. Crane at the port, a common type are:
(1) mounted on the motor shaft and coupling assembly fitted to a limit of the torque limiter, the principle is to: 1 mounted on the driving shaft 3 and the friction plate mounted on the driven shaft 2 between the friction plate 4 to transmit torque generated friction, the friction surface size can be adjusted by means of a compression spring 5, when passing loads exceed the maximum frictional torque, the friction surfaces start to slip, which play a protective role.
(2) mounted on the turbine torque limiter limits on the gear unit. Chinese turbine worm gear pair to pass through the cone friction disc torque. The pressing force of the friction surface engagement produced by the compression spring, the spring force of the torque transmission by the size of the nut needs to adjust.
As engaged in the slewing ring, turntable bearing professional manufacturer, we will be safe and reliable design, meticulous manufacturing, timely and efficient service, providing customers with high quality products. With honest and credible reputation with our customers win the world.

With a variety of cranes, excavators and other mechanical equipment

Single-row crossed roller Cylindrical roller bearing  composed by the two seat, compact structure, light weight, small assembly space for installing high precision cross roller arrangement is 1:1, can withstand the axial force, overturning moment and larger radial force, is widely used in material handling, construction machinery and military products. (11 series, HJ series)
 three-row roller slewing bearing has three seat bottom and radial raceway separate from each other so that each row roller load can be determined exactly, can withstand the various loads, are the four products a maximum carrying capacity, axial and radial dimensions are larger firm structure, particularly for applications that require larger diameter heavy machinery, such as bucket wheel excavators, wheeled cranes, ship cranes, ladle turret and large-tonnage truck crane and other machinery. (13 series)
double-row slewing bearing has three seat, ball and isolation block can be directly discharged into the upper and lower raceway to the situation by force, arranged two rows of steel balls of different diameters. This assembly is very convenient, the upper and lower circular raceway bearing angles are 90 °, can bear large axial forces and tilting moment. When the radial force is greater than 0.1 times the axial force required specially designed raceways. Double-row slewing bearing axial and radial dimensions are large, solid structure, especially for applications that require above average diameter of tower cranes, truck cranes and other handling machinery. (02 series)
double row ball slewing ring with a single row four point contact ball slewing bearing structure is basically the same structure, the difference is that the slewing ring has two rows of rolling elements. Can withstand the large axial load, radial load overturning moment. With a variety of cranes, excavators and other mechanical equipment. (07 series)
 Light slewing slewing ring having the same general structure, light weight, flexible rotation. Widely used in food machinery, filling machinery, environmental protection machinery and other fields (thin, flange type)

Slewing bearing slewing quality slewing price sale

Slewing Ring Co., Ltd. is located in Jiangsu Reiter developed economy and convenient transportation in Changzhou High-tech Economic Development Zone, is the development, design, production in one of the precision slewing bearing manufacturer. Company has always been committed to providing our customers with the most long-lasting and stable rotation, the best quality and perfect service, the most meticulous technical support, products and services to a higher level.
Jiangsu slewing bearing slewing bearing slewing standard model
Jiangsu slewing backing bearings slewing bearing slewing standard model
The company spirit of hard work studying, steady solid dry, developed and produced a variety of series of slewing bearings, has an annual million sets, up to 4 meters in diameter production capacity. In addition to extensive domestic categories of port machinery, engineering machinery, military machinery, environmental protection machinery, metallurgical machinery, wind power and other mechanical equipment, but also exported to Europe, Asia, America and other places, which are widely recognized by customers at home and abroad to win and praise. Jiangsu slewing bearing slewing bearing slewing standard model
"People-oriented", "scientific management", "honest and trustworthy", "forge ahead" business management principles, advanced production equipment, sophisticated processing technology, perfect testing means, will help the company build customer satisfaction assured slewing brands .
Reiter business purposes
Technology: constant innovation, making Reiter slewing product design performance and international synchronization.
Manufacturing: each process using advanced CNC machining technology equipment and products manufactured before the 100% rigorous testing, making Reiter slewing superior product quality. Supply Jiangsu slewing bearing slewing bearing slewing Price
Management: the whole process of making use of modern scientific management methods, making every step of the production process to achieve traceability.
Changzhou Reiter slewing slewing slewing company offer
Services: well-designed, precision manufacturing to meet customer requirements, to meet customer requirements to provide quality slewing bearings, so that our intentions throughout

Turn slewing bearing slewing ring Price Model

Slewing bearing Co., Ltd. is located in Jiangsu Reiter developed economy and convenient transportation in Changzhou High-tech Economic Development Zone, is the development, design, production in one of the precision slewing bearing manufacturer. Company has always been committed to providing our customers with the most long-lasting and stable rotation, the best quality and perfect service, the most meticulous technical support, products and services to a higher level.
Changzhou slewing bearing slewing bearing slewing Price Model
Changzhou slewing bearing slewing bearing slewing Price Model
The company spirit of hard work studying, steady solid dry, developed and produced a variety of series of slewing bearings, has an annual million sets, up to 4 meters in diameter production capacity. In addition to extensive domestic categories of port machinery, engineering machinery, military machinery, environmental protection machinery, metallurgical machinery, wind power and other mechanical equipment, but also exported to Europe, Asia, America and other places, which are widely recognized by customers at home and abroad to win and praise. Changzhou slewing bearing slewing bearing slewing Price Model
"People-oriented", "scientific management", "honest and trustworthy", "forge ahead" business management principles, advanced production equipment, sophisticated processing technology, perfect testing means, will help the company build customer satisfaction assured slewing brands .
Reiter business purposes
Technology: constant innovation, making Reiter slewing product design performance and international synchronization.
Manufacturing: each process using advanced CNC machining technology equipment and products manufactured before the 100% rigorous testing, making Reiter slewing superior product quality. Supply Jiangsu slewing bearing slewing bearing slewing Price
Management: the whole process of making use of modern scientific management methods, making every step of the production process to achieve traceability.
Changzhou slewing bearing slewing bearing slewing Price Model
Services: well-designed, precision manufacturing to meet customer requirements, to meet customer requirements to provide quality slewing bearings, so that our intentions throughout.

light series seven series slewing ring. Widely used in engineering machinery

Slewing bearing fenghe slewing bearings, slewing bearings, slewing bearings Xuzhou fenghe Manufacturing Company
Our Company specializes in: single-row (01 Series, Hs series, Q series), double-row ball (02 series), three-row roller (13 series), single-row cross roller (11 series), double row ball type (07 series), the ball joint type column, light series seven series slewing ring. Widely used in engineering machinery, construction machinery, metallurgical mining machinery, shipbuilding port machinery, environmental protection machinery, light machinery, petrochemical machinery, engineering vehicles, military equipment, etc., have been looking forward with you for common development in the field of machinery and industrial equipment business very lead. Meanwhile, we have to create the maximum value for the society producing the best products in return customers, we offer Xuzhou Slewing Bearing Manufacturing Co., Ltd. is located in fenghe China's largest construction machinery of all XCMG located. Our 30 years engaged in the production and design of slewing ring, in order to facilitate engaged in export, established in 2004, Xuzhou fenghe slewing Manufacturing Co., the registered capital of 20 million yuan, the company covers an area of ​​38,016 square meters, modernized production plant slewing construction area of ​​nearly 20,000 square meters, forging shop nearly 1,000 products and services. Our company name is Xuzhou fenghe slewing Manufacturing Company, welcome to visit our company. Is mainly engaged in the global products and services. We are a joint-stock enterprises, the current main brands are: fenghe, incorporation time: In 2004, the company registered capital is 10 million or more, there are currently more than 200 employees, our company philosophy is: Xuzhou fenghe manufacture slewing Limited and forging, heat treatment, finished products and integration, the introduction of international advanced large-scale equipment: die forging presses, CNC ring rolling machine, forging manipulator, QLM23-40160 门 Dodo beam gantry CNC milling machine, TK6920 CNC Floor boring and milling machine, CNC 5 m vertical lathe, CNC milling machine 5 meters, CNC drilling, quenching equipment, inspection equipment. Slewing the Division I laid the foundation of international standard.

Widely used in engineering machinery, construction machinery, metallurgical

mining machinery, shipbuilding port machinery, environmental protection machinery, light machinery, petrochemical machinery, engineering vehicles, military equipment and other industries. Model covering 150mm-5000mm a variety of standard and non-standard specifications.

Companies specializing in the production: single-row (01 Series, Hs series, Q series), double-row ball (02 series), three-row roller (13 series), single-row cross roller (11 series), double row ball type (07 series), the ball joint type column, light series seven series slewing ring.
Die forging presses, CNC ring rolling machine, forging manipulator, QLM23-40160 门 Dodo girder gantry CNC milling machine, TK6920 CNC floor type boring and milling machine, CNC 5 m vertical lathe, CNC 5 m milling machine, CNC drilling, conditioning equipment, inspection equipment. Produced a series of products, through the national quality inspection finds special mechanical parts, to achieve the same industry-leading level. 2004 passed ISO9001: 2000 quality system certification, in 2008 passed the re-evaluation, is a professional production of one of the major manufacturers of slewing ring. China Classification Society CCS-related products through product testing and certification.
Slewing Tapered bearing slewing fenghe | Xuzhou fenghe slewing Manufacturing Company
Xuzhou Slewing Bearing Manufacturing Co., Ltd. is located in fenghe China's largest construction machinery of all XCMG located. Our 30 years engaged in the production and design of slewing ring, in order to facilitate engaged in export, established in 2004, Xuzhou fenghe slewing Manufacturing Co., the registered capital of 20 million yuan, the company covers an area of ​​38,016 square meters, modernized production plant slewing construction area of ​​nearly 20,000 square meters, nearly 1,000 forge shop
Companies specializing in the production: single-row (01 Series, Hs series, Q series), double-row ball (02 series), three-row roller (13 series), single-row cross roller (11 series), double row ball type (07 series), the ball joint type column, light series seven series slewing ring. Widely used in engineering machinery, construction machinery, metallurgical mining machinery, shipbuilding port machinery, environmental protection machinery, light machinery, petrochemical machinery, engineering vehicles, military equipment, etc.
Slewing bearing slewing fenghe - Xuzhou fenghe slewing Manufacturing Company

Widely used in engineering machinery, construction machinery, metallurgical

mining machinery, shipbuilding port machinery, environmental protection machinery, light machinery, petrochemical machinery, engineering vehicles, military equipment and other industries. Model covering 150mm-5000mm a variety of standard and non-standard specifications.
Companies specializing in the production: single-row (01 Series, Hs series, Q series), double-row ball (02 series), three-row roller (13 series), single-row cross roller (11 series), double row ball type (07 series), the ball joint type column, light series seven series slewing ring.
Die forging presses, CNC ring rolling machine, forging manipulator, QLM23-40160 门 Dodo girder gantry CNC milling machine, TK6920 CNC floor type boring and milling machine, CNC 5 m vertical lathe, CNC 5 m milling machine, CNC drilling, conditioning equipment, inspection equipment. Produced a series of products, through the national quality inspection finds special mechanical parts, to achieve the same industry-leading level. 2004 passed ISO9001: 2000 quality system certification, in 2008 passed the re-evaluation, is a professional production of one of the major manufacturers of slewing ring. China Classification Society CCS-related products through product testing and certification.
Slewing bearing slewing fenghe | Xuzhou fenghe slewing Manufacturing Company
Xuzhou Slewing Bearing Manufacturing Co., Ltd. is located in fenghe China's largest construction machinery of all XCMG located. Our 30 years engaged in the production and design of Taper bearing ring, in order to facilitate engaged in export, established in 2004, Xuzhou fenghe slewing Manufacturing Co., the registered capital of 20 million yuan, the company covers an area of ​​38,016 square meters, modernized production plant slewing construction area of ​​nearly 20,000 square meters, nearly 1,000 forge shop
Companies specializing in the production: single-row (01 Series, Hs series, Q series), double-row ball (02 series), three-row roller (13 series), single-row cross roller (11 series), double row ball type (07 series), the ball joint type column, light series seven series slewing ring. Widely used in engineering machinery, construction machinery, metallurgical mining machinery, shipbuilding port machinery, environmental protection machinery, light machinery, petrochemical machinery, engineering vehicles, military equipment, etc.
Slewing bearing slewing fenghe - Xuzhou fenghe slewing Manufacturing Company

Widely used in engineering machinery, construction machinery, metallurgical

mining machinery, shipbuilding port machinery, environmental protection machinery, light machinery, petrochemical machinery, engineering vehicles, military equipment and other industries. Model covering 150mm-5000mm a variety of standard and non-standard specifications.
Companies specializing in the production: single-row (01 Series, Hs series, Q series), double-row ball (02 series), three-row roller (13 series), single-row cross roller (11 series), double row ball type (07 series), the ball joint type column, light series seven series slewing ring.
Die forging presses, CNC ring rolling machine, forging manipulator, QLM23-40160 门 Dodo girder gantry CNC milling machine, TK6920 CNC floor type boring and milling machine, CNC 5 m vertical lathe, CNC 5 m milling machine, CNC drilling, conditioning equipment, inspection equipment. Produced a series of products, through the national quality inspection finds special mechanical parts, to achieve the same industry-leading level. 2004 passed ISO9001: 2000 quality system certification, in 2008 passed the re-evaluation, is a professional production of one of the major manufacturers of slewing ring. China Classification Society CCS-related products through product testing and certification.
Slewing Precision bearing slewing fenghe | Xuzhou fenghe slewing Manufacturing Company
Xuzhou Slewing Bearing Manufacturing Co., Ltd. is located in fenghe China's largest construction machinery of all XCMG located. Our 30 years engaged in the production and design of slewing ring, in order to facilitate engaged in export, established in 2004, Xuzhou fenghe slewing Manufacturing Co., the registered capital of 20 million yuan, the company covers an area of ​​38,016 square meters, modernized production plant slewing construction area of ​​nearly 20,000 square meters, nearly 1,000 forge shop
Companies specializing in the production: single-row (01 Series, Hs series, Q series), double-row ball (02 series), three-row roller (13 series), single-row cross roller (11 series), double row ball type (07 series), the ball joint type column, light series seven series slewing ring. Widely used in engineering machinery, construction machinery, metallurgical mining machinery, shipbuilding port machinery, environmental protection machinery, light machinery, petrochemical machinery, engineering vehicles, military equipment, etc.
Slewing bearing slewing fenghe - Xuzhou fenghe slewing Manufacturing Company

bearings, slewing bearings, slewing Shandong

Tower crane slewing Tapered bearing  slewing ring price, Shandong tower crane slewing bearings, slewing bearings, slewing Shandong
Slewing usually worm, slewing ring, shell, motor and other parts. As the core components using slewing, it can withstand the axial force, radial force, overturning moment. Its many forms, but basically similar structure and composition.
Composition:
1 cup (with teeth or without teeth) 2. Sealing strip 3. Rolling element (ball or roller) 4. Refueling nozzle
The left and right respectively (the lower part): 1. Plug 2. Plug pin 3. Inner (with teeth or without teeth) 4. Isolated blocks or the holder 5. Mounting hole (screw hole or aperture)
Slewing widely used construction machinery is initially applied slewing is the most widely used in places such as earthmoving machinery, excavators, disintegration machine, stacker reclaimer, graders, rollers, compaction machines, drilling machines, boring machines.
Lifting: wheeled cranes, crawler cranes, gantry cranes, tower cranes, forklifts, with cranes, gantry cranes;

Slewing ring, Shandong slewing bearings, slewing ring price, slewing bearing manufacturers, tower crane slewing bearings, slewing, Shaanxi, Gansu and slewing bearings, slewing Ningxia, Heilongjiang slewing bearings, slewing ring, Liaoning, Jilin, slewing bearings, slewing ring, Shanxi, Jiangsu rotation support, Anhui slewing bearings, slewing Inner Mongolia, Hebei, slewing bearing, slewing ring, Henan, Jiangxi slewing bearings, slewing Zhejiang Province, Wuxi slewing bearings, slewing ring, Sichuan, Guizhou and slewing ring.

Single-row four-point contact ball slewing bearing seat by the two components,

 compact, light weight, and the circular raceway ball four point contact, can withstand the axial force, radial force and overturning moment. Rotary conveyor welding operation machine small cranes and excavators and other construction machinery can be selected. (01 series, HS series, Q series)
(2) Single-row crossed roller slewing ring, composed by the two seat, compact structure, light weight, small assembly space for installing high precision cross roller arrangement is 1:1, can withstand the axial force, overturning moment and larger radial force, is widely used in material handling, construction machinery and military products. (11 series, HJ series)
3 three-row roller slewing backing bearings has three seat bottom and radial raceway separate from each other so that each row roller load can be determined exactly, can withstand the various loads, are the four products a maximum carrying capacity, axial and radial dimensions are larger firm structure, particularly for applications that require larger diameter heavy machinery, such as bucket wheel excavators, wheeled cranes, ship cranes, ladle turret and large-tonnage truck crane and other machinery. (13 series)
4 double-row slewing bearing has three seat, ball and isolation block can be directly discharged into the upper and lower raceway to the situation by force, arranged two rows of steel balls of different diameters. This assembly is very convenient, the upper and lower circular raceway bearing angles are 90 °, can bear large axial forces and tilting moment. When the radial force is greater than 0.1 times the axial force required specially designed raceways. Double-row slewing bearing axial and radial dimensions are large, solid structure, especially for applications that require above average diameter of tower cranes, truck cranes and other handling machinery. (02 series)
5 double row ball slewing ring with a single row four point contact ball slewing bearing structure is basically the same structure, the difference is that the slewing ring has two rows of rolling elements. Can withstand the large axial load, radial load overturning moment. With a variety of cranes, excavators and other mechanical equipment. (07 series)
6 Light slewing slewing ring having the same general structure, light weight, flexible rotation. Widely used in food machinery, filling machinery, environmental protection machinery and other fields (thin, flange type)

so called "wheel bearings" that can withstand large axial load, radial load and overturning moment,

Known turntable slewing Slewing bearing rotating bearing, swing bearing, etc.; having a diameter size of 0.4 to 10 meters, able to withstand the combined loads of large bearings, because of its shape resembles a plate, so called "wheel bearings" that can withstand large axial load, radial load and overturning moment, and can replace several sets of ordinary bearing combination to use function. Generally applicable under enormous overturning moment and rotational movement relative to the mechanical equipment, is a highly efficient, high load capacity bearings. In real industrial applications is very wide, known as: "the machine joints", which are widely used in major applications: cranes, railway cranes, port cranes, marine cranes, metallurgical cranes, container cranes, excavators, irrigation machines, as well as CT machine standing wave treatment, navigation instruments, radar antenna base, missile launchers, tanks, robots, and a revolving restaurant, and so on.so the same force case, the diameter of the bearing can be greatly reduced, and thus have a more compact characteristics of the host is a high load carrying capacity of the slewing ring bearings. LYTBZ slewing bearings are widely used in lifting machinery, mining machinery, construction machinery, port machinery, ship equipment and precision machinery radar and missile launchers and other equipment of large rotary device. Meanwhile LYTBZ also be based on the specific requirements of the user design, development, production of special structure slewing ring bearings.

he diameter of the bearing can be greatly reduced

Slewing ring is a comprehensive load to bear a large bearing, can bear large axial, radial load and overturning moment inside. Slewing ring bearings generally with mounting holes, internal gear or external gear, lubrication holes and seals, and thus enables the master compact design guide is simple, easy to maintain. LYTBZ slewing ring bearings without gear, external gear and the internal gear four-point contact ball bearings, double row angular contact ball bearings Crossed cylindrical roller Tapered roller bearings  tapered roller bearings and cross three-row cylindrical roller bearings four composite series, of which four-point contact ball bearings with high static load capacity, cross-cylindrical roller has a high dynamic load capacity, cross-tapered roller bearings preloaded bearings can support a larger rigidity and rotational accuracy , three-row cylindrical roller bearings increase the carrying capacity of lead bearing height, various forces by different raceway exposed, so the same force case, the diameter of the bearing can be greatly reduced, and thus have a more compact characteristics of the host is a high load carrying capacity of the slewing ring bearings. LYTBZ slewing bearings are widely used in lifting machinery, mining machinery, construction machinery, port machinery, ship equipment and precision machinery radar and missile launchers and other equipment of large rotary device. Meanwhile LYTBZ also be based on the specific requirements of the user design, development, production of special structure slewing ring bearings
contact ball slewing bearings used in the manufacture of metal lottery, once the impact of bearing failure is a major factor, now with the metallurgical technology continues to progress, raw materials extraction has been very good to improve the material quality has greatly improved, and now The raw material quality factors in bearing failure which has been significantly decreased, at this stage the problem still exists.

Contact ball slewing bearing failure of the three criteria

 Contact ball slewing bearing well-known sales, quality, quality are the highest in the world, has its professional production line, through a rigorous factory testing procedure, sold around the world, for the world to support industrial development. Contact ball slewing bearing quality to win market acceptance of its most important basis, then to determine from what contact ball slewing bearing quality it?
The selection of a tapered bearing  manufacturer is not qualified bearing failure is a factor that must be considered, in the usual contact ball slewing bearing failure detection is mainly based on a lot of material, data analysis, failure environment, forging process, identify turning supporting contact ball bearing failure of the main factors, and to get rid facilitate contact ball bearing slewing continuous optimization, service life, and performance improved. Prolonged contact ball slewing bearing service period, to avoid the occurrence of unexpected early bearing failure. Installation conditions are the primary factors that one of the factors, slewing ring contact ball bearing is often caused by improper installation package contact ball slewing bearing between the various parts of the stress state changes, contact ball slewing ring bearings in the unusual state operation and early failure. According contact ball slewing bearing installation, use, maintenance, maintenance of the technical requirements for operation of the bearings to bear the load, speed, temperature, vibration, noise and lubrication condition monitoring and inspection, abnormal immediately find out the reasons, adjusted to normal.
Second bearing industrial design reasonable and perfect a world-class, strong quality assurance of its service life. Contact ball slewing bearing forging go through rigorous forging, bearing heat, turning, grinding and bearing equipment such as a road rigorous process, a variety of manufacturing processes will affect the bearing life. Which affect the finished slewing contact ball bearings imported bearings quality, are in contact with the ball slewing bearing failures are directly related. As technology continues to progress detect contact ball slewing bearing surface inspection found that the metamorphic layer grinding process is the fish contact ball slewing bearing surface quality of a close relationship.
3rd contact ball slewing bearings used in the manufacture of metal lottery, once the impact of bearing failure is a major factor, now with the metallurgical technology continues to progress, raw materials extraction has been very good to improve the material quality has greatly improved, and now The raw material quality factors in bearing failure which has been significantly decreased, at this stage the problem still exists.

The role of slewing unit load

Slewing bearing means work or does not work when subjected to various loads role of a work load of the main load, weight load, dynamic load, wind load, etc., in addition to the load gradient, collision load, temperature, load, etc., of the load aim is to understand the role of load types and load sizes convention method, the other is to introduce a variety of roles load combination approach.
Role of load types are:
Work load: the work load of the excavator and bucket digging resistance caused by the weight of material, it is to focus on the form of the lifting mechanism acting on the excavator and the pressing mechanism is transmitted to the supporting means. There loader working load insertion resistance, resistance and bucket scooping the material and produced by these forces working body and then applied to the supporting device.
Load weight: weight of the machine before the design is generally known, the role of supporting the weight of the device is unknown, it can refer to parameters of the same type and similar machines initially selected seat. Weight distribution according to the structure conditions. Mechanical equipment, electrical equipment, power unit weight is generally seen as a concentrated load, box-type structure weight can be seen as a continuous distribution, truss weight distribution can be assumed in the corresponding nodes.
Wind load: open jobs mining machinery should consider the role of wind load. Wind load calculation that acts in the direction along the first and the force parallel to the ground. Big rain wind load pressure, the machine frontal area and shape and so on.
Dynamic load: including inertial load, vibration and shock loads. When the moving speed and direction changes caused by the mass forces, said inertial forces.

sincerely welcome all relevant enterprises extensive cooperation.

Overall eccentric bearing155 The company mainly produces special overall eccentric bearing reducer, eccentric bearings for, reducer, petrochemical. Textile, metallurgy, mining. Mills etc. severity machinery I plant strong technical force. Production equipment. Detection means perfect. level of advanced technology. strict implementation of national [lso9001] technical standards .0075200 .. 0075100. products. one hundred kinds of models. replace imported Cylindrical roller bearing  fill the gap. to. quality first, service first, credit first. integrity first, the spirit of enterprise. committed bearing industry changes. sincerely welcome all relevant enterprises extensive cooperation.

Combined bearings (NKXR ... Z-type) br9, with an inner ring needle roller and thrust cylindrical roller bearings (NKXR + IR type) br10, with an inner ring of
Needle roller and thrust with housings cylindrical roller bearings (NKXR ... Z + IR type) br11, needle roller and thrust cylindrical roller bearings
(ZARN type) br12, with flange needle roller and thrust cylindrical roller tapered bearing (ZARF type)

Needle - angular contact ball bearings
Needle and thrust ball bearings (NKX00 type) br2, needle and thrust ball combination with a cover bearing (NKX00Z type) br3, with inner

Needle Roller Bearings | Radial needle roller and cage assemblies
Radial needle roller and cage assemblies (needle bearing) is independent of the rolling element cage two broad guide spacing, both to guide the needle accurately, but also to maintain the correct position of needle. This kind of bearing for the shaft and housing bore can serve as raceways occasions, only the shaft and housing bore raceway processed to the required dimensions and geometric precision, you can ensure minimum space high rotational accuracy.
Main structure:
Structural features Roller bearing code
K / KS single / single split
KK / KKS double row / double row split
KZK connecting rod with crank pin
KBK connecting rod with piston pin
KNL long cylindrical roller and hold assemblies
DF Radial needle roller and cage assemblies with a single K-type double row K. ZW type, but also in the whole cage can not be installed, you can use a special mesh-type needle roller and cage assembly bearing rear add "D", namely KD,  kZWD.

In the following cases

Slewing tapered bearing fault repair method
Construction Machinery slewing material porosity due or mezzanine, swim raceway hardened layer hardness, depth manufacturing quality problems such as uneven or

Some external reasons, resulting in hardened raceway spalling or broken tooth ring gear, equipment will not work.
For raceway delamination, we must first make the right judgments. Delamination occurs, generally the external hard to see. According to our experience,

In the following cases, indicating that there is delamination raceway: Host load rotates, the raceway has "slightly - slightly" abnormal sound, rotation speed

Uneven or an azimuth slowed significantly and accompanied by a slight vibration; rotary current motor temperature is too high or too large; Rotary

Motor and hydraulic coupling or coupling pushed up bad habits such as keyways.
Delamination occurs, it must be repaired. Otherwise delamination area will be expanded to the entire slewing bearing scrap.
Repair method is: first slewing roller or ball inside out, so that separation of inner and outer rings; reuse gasoline to clean raceway

Clean; Then grinder (wheel) Microsoft Corporation needle carefully peel layer surrounding area has been hardened cracks generated

Layer rubbed off, the bottom layer will peel polished; raceway required for welding and cutting torch at the preheated by using carbon steel welding rod (electrode before

Be dried and used as baking), to make the solder layer just above the raceway surface 1-2mm; deeper if delamination or larger, should be divided

Layer fragmentation welding, do not make the base material caused by high temperature deformation; This avoids rapid cooling weld cracking, immediately after welding

Insulation measures taken so that he gradually cooled. After cooling grinder grind welding layer, making it slightly above the raceway surface, oil stone

Metallographic grinding or welding layer gradually emery cloth table it with the normal surface raceway highly consistent with the corresponding original curvature model testing,

Until the qualifying date; clean with gasoline raceway and roller (ball) coated with grease, integrally assembled to complete.
Facilitation by the above method of tower cranes and other equipment slewing ring raceway, after long-term use is working properly.
Swing ring gear teeth broken reason may be that the tooth base material quality cast segment (if trachoma, sandwich and other defects, the teeth

Round bending effect significantly weakened); process of using tooth contact inserts of hard objects such as stones or reinforced, so that local bending tooth

Stress increases fracture.
Repair method is a local repair welding or tipped, local welding method is: first damaged parts of the residual matrix crack

Rubbed with a hand wheel, gasoline (oil) clean; welding torch used in this part of the warm-up, when it reaches a certain temperature, the use of

Carbon steel welding rod damaged areas in the teeth of the toothed push welding prototype, making it higher than the party Tooth 1-2mm; send experienced

Machine repair fitter, in accordance with toothed model testing, until tooth compliance requirement.
When the rotary ring gear of an entire tooth is damaged, cut along the tooth root, tooth root and then file into a certain shape. Again in the same

Waste storage ring gear cut a tooth, processed into the appropriate shape with the base material, into the slot, with the tooth template snaps into place.

In order to ensure the consistency of pitch, and added with double wire clamp after tightening the teeth surrounded by low-carbon steel welding. Finally, rasp and other working

Shuhei with the welds to ensure stability augmentation to tooth contact.

control alkalinity refining new ways to ensure refining vacuum treatment effect

Baosteel Special Steel steelworks 40 tons production line with production capacity of high carbon chromium bearing steel
 Recently, Baosteel Special Steel Division steelworks 40 tons production line has produced three batches of pilot carbon chromium backing bearings steel, the NSK company checks certification, its large-scale control of all non-metallic inclusions reach A level standard, internal quality indicators meet user requirements, marking the production line capable of producing high-carbon chromium bearing steel capacity.
NSK Corporation is Special Steel Division bearing steel supplied key users. The company mainly produces high-end products bearing the carbon chromium bearing steel internal quality control is very strict, the original 100 tons electric furnace steel mill bearing steel professional production furnace base, after the 40 tons production line to assume the high-carbon chromium bearing steel production responsibilities.
To ensure high-carbon chromium bearing steel certified material in the production of 40 tons production line smoothly, steel mills set up by a biotech room, two refining factory technical personnel involved in quality improvement group bearing steel, and manufactured with the Ministry of professionals to carry out subject research activities. They were on the original 100 t EAF process for adjustments, process and process parameters in terms of the repeated demonstration, using a steel furnace conditions improve, control alkalinity refining new ways to ensure refining vacuum treatment effect.
At present, a total of nine batches completed furnace carbon chromium bearing steel certified materials are acceptable to users.

it will in turn cause increased bearing wear, reduced life expectancy.

needle Tapered roller bearings operating under conditions such as high speed, and high operating temperatures, special attention should be rotating rings can not be too loose to prevent eccentric, as well as non-fixed ferrule with a gap to prevent sleeve ring deformation under load and to stimulate vibrations.
Rolling in the work allow slight noise, if the noise is too large or unusual noise or crash, it indicates that the bearing has failed.
Preload is the bearing assembly to the inner or outer ring an axial force to remove the needle bearing clearance, and to move the body and the inner and outer contacts generated at the beginning of deformation. Preload can improve the working condition of the bearing stiffness and rotational accuracy, load bearing large, rotating high precision bearings, mostly in the absence of even a small amount of clearance over the work of state interference, in which case it required in the assembly, the bearing preload. Clearance and preload adjustment are usually seen by the inner ring relative axial displacement of appropriate methods to complete. From the above process is not difficult to learn concepts, through to move the bearing clearance adjustment, can improve the bearing capacity and rotation accuracy, progressive bearing life. But at the same time make the bearing frictions, fever increases, so the clearance or preload adjustment when necessary to ensure good lubrication and heat dissipation. If improperly adjusted or poor lubrication

Therefore, the bearing assembly must strictly control and adjust the clearance.

Bearing clearance is defined as a case of a fixed ring, another ring in the radial or axial flow by the maximum amount, the clearance is divided into radial clearance and axial clearance two kinds . Move needle bearing assembly, the clearance is not too big, not too small. Clearance is too large, it will cause the load to move the body to withstand the reduced number of individual load increases to move the body, thereby reducing the accuracy of rotation of the bearing, reducing the service life; clearance is too small, the friction will increase, the heat generated increases, increased wear, also can reduce bearing life. Therefore, the bearing assembly must strictly control and adjust the clearance.
backing bearings temperature causes are: oil quality does not meet the requirements or deterioration, lubricant viscosity is too high; institutions assembly too tight (lack of space); bearing assembly tight; bearing ring on the shaft or housing rotation; overload Large; bearing cage or rolling fragmentation.
1), the shaft and housing bore roundness and the vertical shoulder block bearing according to the appropriate precision requirements.
2), it is necessary to accurately calculate the rotating rings fit the amount of interference, but also suitable for accurate calculation of the amount of the fixed ring. Rotating rings blanch the amount of interference to the extent possible should also get smaller. As long as the operating temperature and ensure the effect of thermal expansion, and the maximum speed of the centrifugal force, resulting in a tight fit so as not to creep or sliding surfaces. Fixed ring size according to the work load and bearing size, select small clearance fit or interference fit, too loose or too tight is not conducive to maintaining the original shape exactly.

Company developed with a ring of miniature tapered roller bearing products to fill the gaps

companies manufacture a small inner diameter of 12mm heavy-duty tapered roller bearingsCompanies manufacture a small inner diameter of 12mm heavy-duty tapered roller bearingsCompany developed with a ring of miniature tapered roller bearing products to fill the gaps
Company developed with a ring of miniature tapered roller bearing products to fill the gaps
Company developed with a ring of miniature tapered roller bearing products to fill the gapsCompany developed with a ring of miniature tapered roller bearing products to fill the gapsOn behalf of the company developed and produced a series of high-end light 32905 tapered roller Roller bearing
On behalf of the company developed and produced a series of high-end light 32905 tapered roller bearing white

Company's own design. Developed the first domestic production of tapered roller bearings single piece positioning washing machine.
Company's own design. Developed the first domestic production of tapered roller bearings single piece positioning washing machine.

angle greater carrying capacity. These bearings are separable bearings

Tapered roller bearings use
Tapered roller Taper bearing mainly bear radial diameter and axial joint load. Load bearing capacity depends on the outer ring raceway angle, angle greater carrying capacity. These bearings are separable bearings, rolling bearing according to the number of rows into single row, double row and four row tapered roller bearings. Single row tapered roller bearing clearance to be adjusted during installation the user; double row and four row tapered roller bearing clearance in the factory according to user requirements is given, not to be user adjusted. Tapered roller bearings have tapered inner and outer ring raceway, Tapered Roller arranged in between. All conical surface projection lines are the same point on the bearing axis together. This design makes tapered roller bearings particularly suitable for combined (radial and axial) loads. Most of the axial load bearing capacity is determined by the contact angle α; α angle increases, the higher the axial load capacity. Angle size calculation factor e; e larger the contact angle the greater the bearing axial load greater applicability. Tapered roller bearings are usually separated type, namely the belt roller and cage assembly of inner components can be composed with tapered conical outer inner (outer) installed separately. Tapered roller bearings are widely used in automotive, mill, mining, metallurgy, plastics machinery and other industries

KR and KR ... PP curve roller

In KR, KR ... PP curve roller, there is a cage-guided needle roller and outer ring on the ring via a bolt axial guidance. For heavy loads and medium speed. Because there is more inside the Cylindrical roller bearing grease storage space, so lubrication intervals have been extended. KR ... PP curve roller is in contact with the seal structure. Using a temperature of -30 ℃ -100 ℃.

Adjustable Mind

Diameter cylindrical roller bearing manufacturer with adjustable concentric small. At low load, it is about 3-4 ', in the medium to high load of 5-7'. With arc-shaped outer concentric bearing wheel adjustable 15-20 '. When a larger angle error, according to the size of the load there is significant edge stresses, it will reduce bearing life.

Tolerance

DF- tapered bearing roller curve wheel size, shape and rotation precision usually is P0 level. Diameter with a circular arc curve roller bearing roller diameter tolerance is 0/-0.05mm, NATR, NATV, NUTR bearing width tolerance h12, curve wheel stud diameter tolerance h7.

NUTR-bearing roller

NUTR series of roller backing bearings is double row full complement cylindrical roller bearings, the outer ring guided by the ribs. All parts are made of bearing outer ring pressed into the sealing cap to form a complete unit, the sealing cover and the thrust ring together form a highly efficient clearance seal. The wheel bearing can withstand very heavy loads, because the rolling elements with axial guidance, even at high speeds can also withstand the impact of axial loads.

NATR and NATR ... PP-bearing roller

NATR series of roller Stainless steel slewing bearing includes an outer ring, inner ring, roller cage assembly and pressed into and fixed to the inner side of the ring. NATR ... PP series also additional sealing ring. The wheel bearing grease with a large storage space, long-term use without greasing.

RNA22 ... 2RS, NA22 ... 2RS-bearing roller

This wheel diameter wheel with STO same series. They just slightly wider, double sealed structure makes no maintenance, use temperature range is -20 ℃ -120 ℃. Installed without inner ring RNA22 ... 2RS series of roller backing bearings should pay attention not to damage the seals. Outer boot needs to end.

What fault slewing

 Any failure of the machine tool will have problems, so that there will be failures slewing problems. That

Mody, slewing ring failure, what does?

Orson Xuzhou Slewing description: General slewing bearing failure was mainly due to all causes, if at work

These faults found would occur even if the repair and maintenance of the general failure of the main slewing the following points.

1, the tile surface corrosion: spectra showed that the concentration of non-ferrous metal element anomalies; iron spectrum, there were many non-ferrous metal components

Submicron wear particles; lubricants excessive moisture, acid exceeded.

2, the journal surface corrosion: spectra showed abnormal concentrations of iron, iron spectrum, there are many sub-micron particles of iron content

, Excessive moisture or oil acid value exceeded.

3, backing bearings surface strain: iron spectrum were found to have cutting abrasive, abrasive ingredients ferrous metals.

While slewing at work there abnormal sound failure, this may be because the work overload and loose screws and other reasons, but also

There will be issues such as shaking, these problems are slewing work is the most common. If we appear at work

The fault, we should not worry, as long even though the maintenance can solve these problems.

What is the purpose of slewing

  Everyone says slewing well in engineering machinery has a great role, but in the end what purpose slewing

It?
Slewing bearing is mainly used in engineering machinery, slewing bearings can bear large axial, radial load, so the engineering machine

Mechanical frequently used. Such as excavators, stackers and reclaimers, graders, rollers, concrete machinery, lifting machinery, industrial

Cheng ship loaders and other places to be widely distributed edible, but also used in medical machinery, light machinery. So slewing

By order of use is very widespread in the machinery, if not less slewing normal use

Slewing defects

 In fact, construction machinery parts in the process must be very careful and attentive, if a little defect can cause health

Produced parts can not be used. lysn-bearing fact, there is little problem will cause the entire part of the damage, so the rotary support

Order there will be a lot of defects, and these defects can affect the use of parts in the construction.
Slewing defects are:
1, there was a clear crystal surface, the reason is because the processing as long as a result of overheating, will reduce the toughness of parts

And impact resistance.
2, the shaft has significant deformation, deformation and mechanical parts even buy back the tab on the mouth was not gentle, will also affect the machine

Mechanical safety at work.
3, the surface has obvious cracks, due to the impact of slewing ring bearing capacity.
4, the surface cause surface decarburization problems of wear resistance and fatigue strength in serious decline.
So when you buy slewing ring must be carefully checked to see if there is no such product defects, if there is

Suggest that you do not buy. Even if there are defects in very cheap to buy back, the mechanical work and life will be greatly reduced fold

Buckle.

Slewing models

Slewing bearing often used in machinery, but also has a lot of models. Like 110 is to represent toothless crossed cylindrical

Roller bearings, slewing ring 11 is crossed cylindrical, 0 is no gear and so on. While slewing models there are many different types

No. There are different uses and meanings, so be sure to use the slewing ring slewing ring to see whether the model. If

You want to know more slewing models,

They would want to tighten the screw slewing

  Many people think that mechanic and mechanical installation must take slewing and mechanical slewing linked with screws

And screws, so we will put very tight spiral Nin prevent slewing off. Xuzhou Orson manufacture slewing

Company Description: When installing Slewing bearing sure not to tighten the screws as tight Ning will work with slewing

Abnormal sound, but also affect the Smart slewing sex. So be sure not to install a tight spiral Nin.

Areas in which the use of slewing

   Slewing ring is often used in construction machinery, engineering machinery and equipment has a very important role, able to withstand

Great gravity, lifting machinery in a very important role. Well, slewing ring often used in which areas.
Slewing often used in construction machinery: for example, cranes, excavators, rollers, graders, concrete machine

Mechanical and so on. Will also be used in the port equipment, military equipment, medical equipment, metallurgical equipment, environmental equipment, and even to playground

Slewing bearing is also used on the device. So the use of slewing ring is very broad, and has great development prospects

Proper installation methods slewing

Slewing bearing when installing a lot of attention, the installation process if there is a little problem or defect will affect the

Slewing ring work. So, how do slewing ring is installed correctly?
1, the mounting surface of the oil slewing take responsibility, paint and other foreign matter should be cleaned up.
2, the installation slewing to ensure the model is correct.
3, the installation does not match if there is a place, can be filled with material, can not be fixed by welding.
4, in the screwing can not click on tightening and want to complete three steps, the first to wring 30%, 80% of the screw, the last in

Tighten.
The above description is the correct method of installing slewing ring, everyone in the installation method you want to follow this, we will be able

Installed slewing bearings, slewing but also to protect the safety at work.

Slewing cause surface cracks

    There are many Roller bearing in buying after slewing surface cracks will find the problems, and sometimes go back to find manufacturers refund, there

The manufacturers also do not want to be refunded. So buyers in the purchase of slewing ring must look at whether the surface cracks.
Slewing bearing surface cracks caused by reasons:
1, may be in the heating, the temperature is too high or too low, increase the steel stress cracks phenomenon.
2, in the heating process the heating time is too long or too short.
3, there are the impurities on the surface of the material will have problems appear to have cracks.
The reason is that the surface cracks caused by slewing the main reason, so producers in the production process temperature

Control is very important, while buyers should also see the later surface cracks.

Slewing of the process

Slewing ring in different fields are used for the purposes that can be said to be an indispensable part of life, so production will be very important. Now I'll tell you about the slewing of the process.
1, the selection of blanks, blanks selection can not have flaws, cracks, lamination and other issues.
2, processing: use a different method to smooth rough surfaces, and to enhance the strength and hardness of the blanks.
3, heat treatment: After heated to high temperatures, so that no rotary Stainless steel slewing bearing surface of shortcomings.
4, rolling, milling: different types of different processing slewing ring, so that the accuracy of 8 or more.
5, scribing, drilling.
6, grinding.
7, inspection and acceptance.

The main products include: all processes completely independent slewing machining

diameters from 149mm to 5200mm in the whole series, ranging from a single light series volleyball, volleyball conventional single-family, two volleyball or double row ball series, cross-roller series, ball stud mix series, three-row Slewing bearing series, six-row roller series, split slewing bearings, widely used in engineering machinery, construction machinery, metallurgical mining machinery, shipbuilding port machinery, environmental protection machinery, light machinery, petrochemical machinery, engineering vehicles, military equipment and other industries.

Basics of wheel bearings

Wheel backing bearings, also called slewing ring, is a way to withstand the large axial load, radial load and overturning moment, comprehensive load large special structure bearings. Typically, with its own mounting holes, lubricants holes and sealing devices to meet various working conditions under the different needs of various types of host. Turntable bearing itself has a compact, easy to guide rotation, easy installation and easy maintenance features. Wheel bearing wheel bearing structural classification structure used a single row, double row four point contact ball slewing bearings, double row angular contact thrust ball slewing bearings, slewing and cross-tapered roller wheel bearings, three-row cylindrical roller slewing bearings, ball bearings and other turntable column mixing different structural forms. In accordance with the above types of bearings and gears with teeth of whether the distribution site is divided into no gear, external gear and the internal gear type, and so different structures. Features turntable turntable bearing load bearing structure according to the different characteristics can meet various load conditions were working under the host's needs. Among them, four-point contact ball slewing bearings with high dynamic load capacity. Double row ball slewing bearing capacity than a single volleyball turntable has greatly improved. Cross cylindrical roller slewing with high static load capacity. Ball joint wheel bearing column in turn guarantee a certain accuracy conditions, with larger axial and radial loads and overturning moment capacity.
Wheel bearings, also called slewing ring, is a way to withstand the large axial load, radial load and overturning moment, comprehensive load large special structure bearings. Typically, with its own mounting holes, lubricants holes and sealing devices to meet various working conditions under the different needs of various types of host. Turntable bearing itself has a compact, easy to guide rotation, easy installation and easy maintenance features. Wheel bearing wheel bearing structural classification structure used a single row, double row four point contact ball slewing bearings, double row angular contact thrust ball slewing bearings, slewing and cross-tapered roller wheel bearings, three-row cylindrical roller slewing bearings, ball bearings and other turntable column mixing different structural forms. In accordance with the above types of bearings and gears with teeth of whether the distribution site is divided into no gear, external gear and the internal gear type, and so different structures. Features turntable turntable bearing load bearing structure according to the different characteristics can meet various load conditions were working under the host's needs. Among them, four-point contact ball slewing bearings with high dynamic load capacity. Double row ball slewing bearing capacity than a single volleyball turntable has greatly improved. Cross cylindrical roller slewing with high static load capacity. Ball joint wheel bearing column in turn guarantee a certain accuracy conditions, with larger axial and radial loads and overturning moment capacity.

skf bearing fag bearing net sales prospects

  Network is powerful, what information has, and in the years of development of e-commerce today, since every business should pay attention to e-commerce, which is the network that one. According to statistics, the following cities in two lines and the annual growth of electronic commerce is close to 100 percent, showing its power.
For Shanghai and fag bearing, skfRoller bearing, net sales are also necessary. See online there are many dedicated e-commerce site Taobao is not a single big, such as steel with steel, the car will have franchised car class, cosmetics are cosmetics category. The bearings also have many websites, and seems like a good two pages will give you a home when, in fact, they are a means of network marketing, also in marketing. The formal business stations should have their own website, their products, and the corresponding standard management. This Biao drive from our holy sites can be seen. We can say that Shanghai skf bearing the largest agency, welcome friends need brand skf bearing contact us!

The importance of mechanical industrial bearings

Backing bearings the beginning when I only heard, but I do not know is doing, and then do the site beginning to think that it should be the car parts? Oh we do not laugh at me. Later I learned that, as long as and machinery industry can be said to be used in any production industry bearings. Why? Today, because of the rapid development of science and technology, enterprises are modern, including rural areas, are modern production, the production is inseparable from the high-tech devices, and these devices are required bearings. That is to say I relieved! Is like a road, like hubs general! Is very important. People in the country are worrying about quality issues at the same time, Shanghai San Biao drive sales as Shanghai famous bearing manufacturer, we will provide the most professional and quality and quantity of brand bearings, which sells national brands such as skf bearings, fag bearings, nsk bearings! other enterprises dare not say, at least St. Biao drive, will be subject to stringent production and sales line, as well as perfect after-sale guarantee first place, this is a win-win society, and customer win-win and mutually beneficial At the same time, I believe we will become good friends!

Bearing Nsk bearing sales knowledge to learn a lot of things that we should

Nsk Slewing bearing is known to Japanese industry, we can say that Japan is a creative and have a strong ethos of the country. In any industry can not say who is on whose plagiarism, NSK Backing bearings Japan, other industries have also inherited the characteristics of the industry, is honesty, a Japanese agency if the General Assembly and signed a letter of intent, that is, after careful consideration and investigation to determine, is the recognition of this company, which explains the NSK's cooperative attitude on the enterprise responsible for the integrity.

The other hand, NSK Bearings NSK can be seen in the history of the development of enterprises in the sales of bearings in addition to considerable ingenuity, but also for his production lines and products produced self-confidence, and unlike most of the manufacturers back irresponsible, but will lines and bearing monitoring the same time, to prevent low-quality products, but also to prevent the process cumbersome. But after all, even the best companies have drawbacks, such as those to NSK recognized domestic work, said Japanese companies relatively stingy. But they are still willing to go, because I wanted to go with the sophisticated development.
In the bearing industry on this road Shanghai St. Biao transmission also learn a lot of things.

Professional sales of imported Nsk bearing, nsk bearings and cooperation

Nsk in China
NSK since 1960, and actively explore overseas markets, so far, NSK Group has been established in 13 countries 62 production bases. In China, as early as 40 years ago, NSK on the first state-owned enterprises in other companies to provide technical support, so far, has covered coastal and inland provinces in Northeast China 12 production bases. Now, the production of ball screws and other precision machine factory and the production of two large Roller bearing factory opened in Shenyang, China will achieve NSK done locally in industrial machinery bearings, automotive related products and a full set of Seiki products manufacturing business, timely, stable to provide excellent quality products. In addition, NSK has around 20 sales outlets in China, China's technology center to be able to NSK's full line of products to provide technical support in the production, sales, technical aspects of enhanced interaction, as a true localized enterprises, and actively build and develop the Chinese market strategy and operations. NSK has successfully achieved the market share in China's bearing N0.1, and establish a strong brand. In the future, NSK will further utilize local resources and personnel to effectively expand local production in response to market demand in China, to ensure absolute leading market share in China's leading position

oreign-bearing axial clearance is relatively small, high rotational accuracy is very beneficial to improve the sealing effect.

A foreign Backing bearings grease filling volume and filling at least 27% lower than the domestic bearings, fill the bearing internal fat percentage fat content higher than normal.
2 There are three domestic oil plus refusal ring bearing seal lip, but the lip structure, there are significant differences. Department of State Seal bearing seal is a low torque, the friction torque is small, less heat, has good resistance to external mud, dust capacity, but also a better ability to prevent oil leakage. Domestic bearing seal structure to resist external mud, dust, foreign matter worse than the ability to prevent grease leakage area is better, but the torque due to friction, temperature rise, so refined oils, bearing external pressure increases, excessive grease, plus loading, thus weakening the impact of grease to prevent leakage.

Domestic bearing large compared what good or bad

Roller bearing  seal
Foreign and domestic bearing seal three lip seal, but the configuration is different. The difference is:
1, three oil ring seal or reject the amount of interference contact with different lip gap.
Bearing the seal lip two foreign interference smaller, three lip seal gap, a pair of the degree of interference with the domestic bearing equal lips. Overall, the foreign low torque, the friction torque of the bearing seal interference amount, the contact force is small, the bearing temperature should be lower than the temperature of bearings.
Two lip seals structural differences.
Foreign and domestic bearing seal lip opposite direction 3, and 3 and the annular space between the bearing oil seal lip rejected. When the bearing rotates, the temperature rises, the upside is bound to affect the gas pressure.
3, and the gap between the lip oil ring veto does not constitute an obstacle to the pressure more time, it will be formed by the two channels of the lips and lip leakage; such as internal and external pressure is relatively small, oil spill will be slow. In Figure 2, when the pressure is more time, the three lip seals amount of interference increases the pressure, when the pressure rises high enough, the three lips will drive a moment, 2, and 1 a pressure leak path Lip , pressure and concentration transient local grease will leak.
4, two lip seals structural differences
Two lip seals Roller bearingforeign roots thin and thick end of the final contour upwards. 23 storage space between the lip and lip. Two lips domestic bearing thickness, 23 lip lip and the area between the external memory is not going to realize the impact of cement dust.
5, on foreign soil, dust capacity
Foreign mud, dust into space 4, the first in space stranded ①, ① space is full, through the space ②, ④ ③ into the bearing. Foreign bearing space ①, ②, ③ with memory function, the only aerospace bearings ①, ③ storage capabilities. Therefore, to better resist foreign bearing external dirt, dust capabilities.

skf bearing of the shaft design concepts and Failure

  1. Shaft failure modes: a major lack of strength due to fatigue and the fatigue crack bamboo fish trap, due to insufficient strength of static plastic deformation or brittle bamboo fish trap crack, abrasion, exceed the allowable range of deformation and vibration. Slewing bearing Engineer
2-axis should be designed to meet the following criteria:
(1) according to the axis of the working conditions, production volume and economic principles, selecting suitable materials, blank form and heat treatment method.
(2) according to the axis of the force, the shaft part is installed, with the size and positioning, the axis of the processing methods and other specific requirements, determine the rational structure of shaft shape and size, namely the structural design of the axis.
(3) shaft strength calculations or check. A large force on the elongate shaft (such as worm shaft) and high axial stiffness requirements, but also for stiffness calculation. In the work under the high-speed shaft, due resonance dangerous and should be carried out vibration stability calculations.

skf bearing damage in the form of rolling what?

Skf Roller bearing during operation, if abnormal heat, vibration and noise sudden increase of the phenomenon, that rolling bearings may have been damaged, should be checked and analyze the reasons. Common failure modes are:

1, fatigue spalling
In the rolling bearings or rolling element raceway surface, because the role of alternating load the contact surface of the metal surface was flaking, and gradually expand to form pits. If you continue to run, then the formation area of ​​spalling zone. Due to improper installation or bearing bore and shaft centerline tilt will cause the bearings to withstand greater loads and the local area early fatigue damage.
2, crack and fracture
Material defects and improper heat treatment, with the amount of interference is too large, the combination of poorly designed, such as the bearing surface with grooves caused by stress concentration, etc., will form a ring crack and fracture.
3, the indentation
When the outside durum substances into the bearing and the pressure in the rolling element and raceway between the rolling surface indentation can. In addition, excessive impact loads the contact surfaces can produce localized plastic deformation of the pits are formed. When the bearing is stationary, even if the load is small, the vibration of the surrounding environment will also be uniformly distributed in the raceway formed pits.
4, wear
When the bearing seal is not good, so that dust or particulate matter from entering the bearings, or poor lubrication, the contact surface will cause more severe scratches or wear, and bearing vibration and noise increase.
5, the current corrosion
Current through the bearing, will produce a small spark, resulting in the emergence of the contact surface of the partial annealing pits or black highlights. Serious cases will emerge into the larger pits.
6, rust
Water or acid, alkali, salts and other invasive bearings or improper selection of the lubricant from the bearing references rust, corrosion precision bearings also allow even a slight bearing scrap.
7, the cage damage
Bearing, in particular high-speed bearings, because the lack of the lubricant, the retainer ring and the rolling elements is generated at the contact wear, impact, and even lead to cage fracture.

Magnetic bearing application example

1. Machine tools used in machine tool spindle applications is limited, is on probation.
(1) precision machine tool spindle

French S2M company made use of 5-DOF controlled magnetic Roller bearing precision spindles, the radial bearing dn value 4X106mm · r / min, journal line speed 200m / s, thrust bearing dn value 8X106mm · r / min, linear velocity of the thrust journal 400m / s.

(2) ultra-precision lens lathe

French company S2M active magnetic bearing supported by the ultra-precision lens lathe spindle speed 2000r/min, power lkW, precision 0.05ttm.

2. Application of precision instruments

UK National Physical Laboratory developed maglev guideway automatically distinguish between measuring instrument in the band lkHz, bearing stiffness 175N/gm, resolution of 0.1nm.
 
Ultra-precision lens lathe

French company S2M active magnetic Slewing bearing supported by the ultra-precision lens lathe spindle speed 2000r/min, power lkW, precision 0.05ttm.

2. Application of precision instruments

UK National Physical Laboratory developed maglev guideway automatically distinguish between measuring instrument in the band lkHz, bearing stiffness 175N/gm, resolution of 0.1nm.

3. Pump Applications

(1) Blood Pump

University of Tokyo developed in cooperation with NTN Corporation magnetic bearing pump blood. Spindle controlled by a 5-DOF active magnetic bearing, radial bearing capacity imports of 18N, exports bearing radial load capacity of 22N, thrust bearing capacity of 9.2N.

(2) the adoption of the circulation pump France SEP S2M's active magnetic bearing research and development of rocket engines with liquid oxygen, liquid hydrogen circulation pump.

4. The application of space technology

Japan NAL & MELCO and NAL & TOSIBA companies with active magnetic bearing space attitude control inertia wheel.

5. Physics Experiment

(A) high-precision beam transducer Germany Uranit company introduced three magnetic bearing rotor with a particle beam converter.

(2) Neutron selector

German KFA manufactured neutron selector, using a single degree of freedom passive magnetic bearing rotor speed 36000r/min.

Classification

Magnetic Slewing bearing according to its control, magnetic energy source, structure and other classifications. In addition, you can also press the magnetic field of the permanent magnet type by type, type electromagnet and permanent magnets - the electromagnet mixed. Bearing suspension force can also be divided into a suction type type type and repulsion. Superconducting magnetic bearing is also divided into low and high temperature superconducting superconducting two kinds.

All of the above categories between different types there are some special restrictions, should pay special attention.

① magnet bearing is only a passive type (passive), and not in the passive bearing is stable three directions, the direction of at least one active type should be used.

② DC excitation type bearings can only be active type (active).

③ pure electromagnetic type bearings only five degrees of freedom control type bearings, volume, mass and power consumption are large.

④ repulsive type magnetic bearing, because the flux utilization is low, suction-type structure is more complex, it seldom used

Feature

① low friction, low power consumption, ultra-high-speed operation.

② supporting high precision, stable and reliable.

③ at high temperature, Cylindrical roller bearing and vacuum environments running.

④ complex structure, requiring harsh conditions, magnetic interference on the environment, but no other contamination.

SKF Bearing involving business areas include: petrochemicals, transportation

power, metallurgy, mining, wind power, textile, machinery manufacturing, paper printing, beer, food, ceramics, and Slewing bearing and environmental protection industries.

RU45X Crossed roller bearings - Luoyang Bearing Bothwin

   THK Cross Roller bearingg U series: RU42, RU66, RU85, RU124G, RU124X, RU148G, RU148X, RU178G, RU178X, RU228G, RU228X, RU297G, RU297X, RU445G, RU445X we uphold the "attention to detail, self-improvement" business philosophy, always will be "to provide customers with quality products and satisfactory after-sales service" as its consistent development purposes. We welcome new and old customers to patronize and look forward to working with you for your business make more contributions to the development and technological progress.

Shelf crossed tapered roller bearings NRXT8013DDC8P5

   Long-term distribution of the world's major brands of imported bearings, including: Sweden SKF Bearing, Japan NSK Bearings, Germany FAG bearings, Japan NTN bearings, Germany INA Bearing, IKO needle roller bearings, the United States TIMKEN bearings, Japan KOYO, THK, NACHI, etc.; products involved: deep groove ball bearings, cylindrical Taper bearing tapered roller bearings, aligning ball bearings, spherical plain bearings, spherical bearings, and linear guide bearings, and other series, and is widely used in machinery and equipment, water irrigation, engineering , railway, automobile, steel, electricity, textile, packaging, medical, metallurgy, mining, petroleum, electricity, paper, computer, electronics, sports equipment, office equipment, instrumentation, automotive motors, precision instruments and other fields. The company has a lot of cash, the implementation of all-weather delivery, in the shortest possible time for customers to solve the bearings supporting applications and provide personalized services. In the company of "quality first, reputation first, service first" purpose, to strengthen internal management, to the best quality, best price, fastest speed, best service based on the market, equality and mutual benefit, friends at home and abroad to establish long-term friendly and mutually beneficial trade relations. Backed by strong real-owned, user-friendly management concepts and advanced marketing network, with its own supply and sale in the advantage to the rich inventory, fast response and high performance and high quality products for customers with perfect bearings services.

Cross Tapered Roller Bearings XR496051

 in the cross-roller bearings, cylindrical roller due to the 90 ° to the surface of the V-shaped groove scroll through the spacer retainer is arranged perpendicular to each other, so a cross Taper bearing can bear radial load, axial load and moment load and other loads in all directions. Inside and outside the ring size is the minimum possible, in particular, is close to the limit of very thin type compact size, and high rigidity, so the most suitable for the industrial robot joints or rotating parts, machining centers rotary table, manipulator rotating parts, precision rotary tables, medical equipment, measuring instruments, IC manufacturing equipment and other purposes. Crossed roller bearings, having been split inner or outer ring, load rollers and spacer retainer after the Cross-Roller Ring and fastened together to prevent separated from each other, so when you install the Cross-Roller Ring Operation easy. As for the cross-roller arrangement, non-standard cross roller bearings, so only one set of Cross Roller Ring can bear loads in all directions, compared to conventional models, rigidity increased by 3 to 4 times. Also, because the cross roller bearing inner or outer ring is two split Roller bearing clearance adjustable, even if they are applied preload can be obtained with high precision rotary motion.

Applications

Applications
Machine tools with precision rotary indexing table
Rotate the camera
Microscope stage
Center pivot rod
Rotate bogie
The welding carriage
Large tanker mooring buoys
Vertical and horizontal boring machine
Vertical Grinder
Rotary Surface Grinder
Large hobbing
Turret guns and radar
Large radio and optical telescopes
Rotate the camera
Microscope stage
Center pivot rod
Rotate bogie
The welding carriage
Large tanker mooring buoys
Rotary assembly fixture
Industrial robots
Precision rotary table
Medical Devices
Measuring instruments
IC manufacturing equipment
Rotary assembly fixture
Industrial robots
Precision rotary table
Medical Devices
Measuring instruments
IC manufacturing equipment
Vertical and horizontal Roller bearing
Vertical Grinder
Rotary Surface Grinder
Large hobbing
Turret guns and radar
Large radio and optical telescopes
Rotate the camera
Microscope stage
Center pivot rod
Rotate bogie
The welding carriage
Large tanker mooring buoys
Rotary assembly fixture
Industrial robots
Precision rotary table
Medical Devices
Measuring instruments
IC manufacturing equipment

Applications

Machine tools with precision rotary indexing table
Rotate the camera
Microscope stage
Center pivot rod
Rotate bogie
The welding carriage
Large tanker mooring buoys
Vertical and horizontal backing bearings machine
Vertical Grinder
Rotary Surface Grinder
Large hobbing
Turret guns and radar
Large radio and optical telescopes
Rotate the camera
Microscope stage
Center pivot rod
Rotate bogie
The welding carriage
Large tanker mooring buoys
Rotary assembly fixture
Industrial robots
Precision rotary table
Medical Devices
Measuring instruments
IC manufacturing equipment
Rotary assembly fixture
Industrial robots
Precision rotary table
Medical Devices
Measuring instruments
IC manufacturing equipment
Vertical and horizontal boring machine
Vertical Grinder
Rotary Surface Grinder
Large hobbing
Turret guns and radar
Large radio and optical telescopes
Rotate the camera
Microscope stage
Center pivot rod
Rotate bogie
The welding carriage
Large tanker mooring buoys
Rotary assembly fixture
Industrial robots
Precision rotary table
Medical Devices
Measuring instruments
IC manufacturing equipment

Design Features

XRT Series has two tapered roller at 90 ° to the surface of the V-cutter vertical cross through a spacer retainer arrangement, able to withstand the radial load, axial load and other loads in all directions.
Raceways and Taper bearing on the line contact structure provides maximum rotational accuracy, high stability and greater tilt stiffness.
Preload adjustable design extends bearing life, the maximum extent possible to increase the rigidity and provides a minimal beat.
Nylon spacer lower inertia, running less torque.
Components using surface-hardened steel or Roller bearing steel electroslag remelting, good impact resistance

Cross Tapered Roller Bearings

Crossed roller Backing bearings are mainly two categories, one category is crossed cylindrical roller bearings,
Cross Tapered Roller Bearings
While the other is a cross-tapered Taper bearing  both of which are rolling in the V-shaped grooves perpendicular to each other, the only difference is the crossed tapered roller bearing rings V-groove tapered roller according to adopt a different perspective and different , so that a greater capacity, higher speed. Currently on the market, capable of producing cross-tapered roller handful of companies, foreign countries such as Timken, SKF, URB and NACHI bearings, several well-known companies, and there is no domestic production are relatively mature technologies and businesses.

Supply full complement cylindrical roller bearings SL045017PP

Single row / double row full complement cylindrical roller bearings (full complement Cylindrical roller bearing, SL full roller bearings)
Our professional production of diameter 20mm - 150mm SL series (INA, SKF, NTN and other structures) single / double row loaded SL dense full roller

Bearing all products!
SL1829 Series SL bearings, SL1830 Series SL bearings, SL1922 Series SL bearings, SL1830 Series SL bearings, SL1818 series

Column, SL1822 Series SL bearings, SL0450 Series SL bearings, SL0148 Series SL bearings, SL0149 Series SL bearings, SL1850

Series SL bearings.
Our all SL full roller bearings are export quality, can be OEM. SL full roller bearing product models
SL full roller bearings SL0450 PP Series:
SL045004 PP SL045005 PP SL045006 PP SL045007 PP SL045008 PP SL045009 PP SL045010

PP SL045011 PP SL045012 PP SL045013 PP SL045014 PP SL045015 PP SL045016 PP

SL045017 PP SL045018 PP SL045019 PP SL045020 PP SL045022 PP SL045024 PP SL045026

PP SL045028 PP SL045030 PP
SL full roller bearings SL1850 Series:
SL185004 SL185005 SL185006 SL185007 SL185008 SL185009 SL185010 SL185011 SL185012

SL185013 SL185014 SL185015 SL185016 SL185017 SL185018 SL185019 SL185020 SL185022

SL185024 SL185026 SL185028 SL185030
SL full roller bearings SL1830 Series:
SL183004 SL183005 SL183006 SL183007 SL183008 SL183009 SL183010 SL183011 SL183012

SL183013 SL183014 SL183015 SL183016 SL183017 SL183018 SL183019 SL183020 SL183022

SL183024 SL183026 SL183028 SL183030
SL full roller bearings SL1822 Series
SL182204 SL182205 SL182206 SL182207 SL182208 SL182209 SL182210 SL182211 SL182212

SL182213 SL182214 SL182215 SL182216 SL182217 SL182218 SL182219 SL182220 L182222

SL182224 SL182226 SL182228 SL182230
SL full roller bearings SL0149 Series
SL014914 SL014916 SL014918 SL014920 SL014922 SL014924 SL014926 SL014928 SL014930

SL014912
SL full roller bearings SL05 series, SL06 series
SL05016 SL06016 SL05018 SL06018

Thrust needle roller bearings | thrust cylindrical roller bearings | thrust ball bearings

Taper bearing with needle or cylindrical roller or ball thrust cage assemblies and thrust washers components. Needle roller and cylindrical roller by

To thrust cage holding and guidance. DF with different series of thrust bearing washers are used together, can be equipped for the bearing

Set offers many different combinations. As the use of high-precision cylindrical roller (needle) increased contact length makes this bearing in

Very little space available under a high load capacity and high rigidity. Another advantage is that if adjacent parts raceway surface is adapted for

Can be omitted when washer, can compact design, DF thrust needle roller bearings and cylindrical roller bearings with thrust needle roller and cylindrical roller

The cylindrical surface of the surface modification can reduce the edge stress, improve life.
Thrust needle roller and cage assemblies AXK
Thrust needle roller and cage assemblies are the main components of the thrust needle roller bearings. Arranged by the radial needle roller bag holder and guidance.

The holder having a specific cross-sectional shape, is formed of hardened steel. Small cage with industrial plastics.
Precision needle roller diameter grouping tolerance of 0.002mm, to ensure that the load is evenly distributed. Thrust needle roller and cage assemblies using axis guide

. Thus, even if the guide surface at high speed can be obtained relatively low circumferential speeds.
If the adjacent raceway surface is designed to save space-saving washer will receive a special support. If this program can not be implemented

When there is sufficient support in the conditions, the use of thin-walled steel washers AS Series also enables a compact design.
Thrust cylindrical roller bearings 811,812,893,874,894
This bearing is a thrust cylindrical roller and cage assembly, a bearing locating ring GS and a WS-axis positioning components. 893

, 874 and 894 series cylindrical roller thrust bearings can be used for higher loads.
DF thrust cylindrical roller bearing cage by high quality steel stamping, but also by industrial plastics, light metals and brass manufacturing

As users request based on the environment.
Thrust Ball Bearings
Retainer material is divided into stainless steel and copper, thrust ball bearings are separable, the contact angle of 90, can be installed separately,

Only carry axial load. Limit ... thrust ball bearings Thrust ball bearings can withstand axial load, thrust

Ball bearings can withstand axial load, spherical seat thrust ball bearings with aligning properties, can eliminate the impact of installation errors

Rang.

Supply of physical ring needle roller bearings NA4913

 Physical ring needle roller bearings are composed of one or two rings and needle roller cage with a group of components. It has a smaller size and

A high carrying capacity. Therefore, such bearings to meet light weight, small footprint, transmission power requirements. According to

Different applications, can be used with or without inner ring of the bearing inner ring.
Entity major structural type ring needle roller bearings
Structural features bearing code
STO RSTO NA22 / 8 2RS NA2200 2RS Backing bearings without axial guidance NA22 2RS series
NK NKS RNA49 RNA48 double-wall outer row without an inner ring
NA59 RNA59 double-wall outer row
NKI NKIS NA49 NA48 double-wall outer row with an inner ring
RNA69 Dual Edge double row outer ring without inner
NA69 Dual Edge double row outer ring with an inner ring
RNA49 .. RS RNA49 .. 2RS-sided or double-sided seal sealing
NA69 .. RS NA69 .. 2RS-sided or double-sided sealed double row sealed
RNAO outer wall single or double row without an inner ring
NAO outer wall single or double row with an inner ring
RNAV row without an inner ring outer double wall
NAV single outer double wall with an inner ring
I R LTR inner series
BR, BRI, NCS, MR, HJ inch series needle roller bearings with inner ring
Outer double wall (or double lock ring) with cage needle roller bearings NA, NKI-type
Inner and outer rings can be installed separately (with lock ring, full needle roller and cage), permissions, high speed, two kinds of single and double row.
If the shaft can not be used as a raceway, ie If the shaft hardened by grinding impossible or uneconomical when the inner ring may be the use of such

Needle roller bearings.
Physical ring needle roller bearings without inner ring needle roller bearings with cages
NA, NKI type bearings without inner ring is RNA, NK-type needle roller bearings.
Such bearings without inner ring for radial mounting dimensions restricted support structure to match the journal and bearing directly as rolling

Surface. Shaft as a raceway surface, the hardware must be quenched and polished, and only be processed to the appropriate size and shape accuracy

When set to a higher life needle roller bearings and running accuracy. Also, because without inner diameter of the shaft can therefore be appropriate

When the increase, which also increases the rigidity.
Physical ring needle roller bearings with or without inner ring sealed needle roller bearings
Single or double sealed needle roller bearings can effectively prevent the intrusion of dirt, the bearing has filled the right amount of lithium grease.

This kind of bearing inner ring width than the outer ring, which makes the bearing on the shaft relative to the bearing housing with a little displacement can also be sealed to ensure a good and free

To bearing contamination. Bearing inner ring also has lubrication holes can be configured according to the needs of the outer or inner supplementary lubrication.

Supply of automotive water pump bearings

As the car forward speed, high reliability, low power consumption direction of development, the cooling water pump also requires to light weight, small size, high flow, high-speed direction, the shaft bearing is a bearing capacity, rigidity, rotary, high precision, long life, reasonable structure, reliable operation of the new bearings. Currently, the only widely used in automobile cooling water pump in the textile machinery, engineering machinery etc. have also been widely used.

1. Product Scope and Structure Description:
Series Structure Description
WB double row ball water pump bearing
WR
A ball a roller water pump bearing
2. Automotive water pump bearing the marking methods:
Basic Code-behind Code
Series Shaft d sets of diameter D length B
1, uppercase Lading An female representation structure is different
2, the same numbers indicate the sequence number of the basic make-inch
WB ---
WR ---
3. Material selection and heat treatment:
Use conventional shaft bearing steel (including shafts, outer ring, Ball & Roller) high carbon chromium bearing steel (GCr15). Because high-quality bearing steel smelting by vacuum deoxidation, electromagnetic stirring, oxide content is less, the contact pressure can withstand greater stress while the hypervariable withstand greater tensile stress by heat treatment, the hardness of the shaft raceway to 58-62HRC. Department raceway hardness of 60-64HRC, ball and roller hardness is 61-65HRC. When the shaft, outer carburizing bearing steel, the raceway hardness of 60-64HRC. Cage material usually used reinforced nylon 66, a ring of material generally use NBR, when asked high, can also be used expensive fluorine rubber seals.
4. Clearance:
Manufacture conventional shaft bearing radial clearance clearance basis: in the absence of specific requirements, the no-load case, radial clearance is 15-35um, the user reasonably choose to Stainless steel slewing bearing with the outer ring and the interference volume is very important, too large amount of interference causes the bearing radial clearance dropped, and damage the bearing, so that the pump does not work, practical work, in addition to the above reasons, but also need to take into account the temperature rise caused by thermal expansion that clearance decreases, it is generally recommended amount of interference as follows:
Bearing outside diameter D (mm) casing diameter deviation (um)
Steel pump aluminum pump
30 The following 25-4535-55
30 or more 32-5555-76
5. Lubrication:
As the pump shaft bearing work at high speed, high temperature conditions, lubrication conditions directly affect the shaft connected to the shaft for the life of high dropping point should be adopted, thickening of the better imported high grease seal is often used large radial interference contact seals to ensure long bearing losing oil.

KR and KR ... PP curve roller

Curve of the wheel bolts as part of the raceway is hardened. To avoid stress concentration, thick-walled outer roller surface arc-shaped out of the loop. Curve with two rollers single and double seals, without seals, with seal ring a variety of models. Grease a large space with a storage ring, providing permanent lubrication, and extended lubrication intervals. N220 or PTFE gasket material for its operating temperature ranges of -30 ° C to +100 ° C or -30 ° C to +180 ° C. Dense loading curve wheel it can withstand heavy loads, but the speed is low, and it must always be lubricated.
Supporting roller has thick-walled outer ring, take advantage of this outer ring, the wheel can roll in the raceway, and can withstand large loads. VG-bearing roller pressure roller, eccentric roller, roller rocker. Wheel diameter cylindrical or spherical. Spherical outer ring can make use of the tilt position when installing compensated.
RSTO and STO-bearing rollers
DF-Series RSTO type roller bearing without inner ring, roller bearing can be directly used as a raceway shaft quenching operation. STO-belt inner ring, with its inner and outer rings and needle roller cage assembly can be installed separately. As RSTO and STO-bearing roller ring without ribs and the end, the installation must have axial guidance, its guiding surface is at least precision lathe.

RNA22 ... 2RS, NA22 ... 2RS-bearing roller
This wheel diameter wheel with STO same series. They just slightly wider, double sealed structure makes no maintenance, use temperature range is -20 ℃ -120 ℃. Installed without inner ring RNA22 ... 2RS series of roller bearing should pay attention not to damage the seals. Outer boot needs to end.

NATR and NATR ... PP-bearing roller
NATR series of roller bearing includes an outer ring, inner ring, roller cage assembly and pressed into and fixed to the inner side of the ring. NATR ... PP series also additional sealing ring. The wheel bearing grease with a large storage space, long-term use without greasing.

NATV and NATV ... PP-bearing roller
NATV series of roller bearing roller with NATR series is basically the same, the only difference is NATV series full complement needle roller type. So it can withstand heavy loads at low speeds, but must pay attention to regular lubrication. NATV ... PP series with seal structure.

NUTR-bearing roller
NUTR series of roller bearing is double row full complement Cylindrical roller bearing bearings, the outer ring guided by the ribs. All parts are made of bearing outer ring pressed into the sealing cap to form a complete unit, the sealing cover and the thrust ring together form a highly efficient clearance seal. The wheel bearing can withstand very heavy loads, because the rolling elements with axial guidance, even at high speeds can also withstand the impact of axial loads.

Tolerance
DF-bearing roller curve wheel size, shape and rotation precision usually is P0 level. Diameter with a circular arc curve roller bearing roller diameter tolerance is 0/-0.05mm, NATR, NATV, NUTR bearing width tolerance h12, curve wheel stud diameter tolerance h7.

Adjustable Mind
Diameter cylindrical roller bearing with adjustable concentric small. At low load, it is about 3-4 ', in the medium to high load of 5-7'. With arc-shaped outer concentric bearing wheel adjustable 15-20 '. When a larger angle error, according to the size of the load there is significant edge stresses, it will reduce bearing life.

In KR, KR ... PP curve roller, there is a cage-guided needle roller and outer ring on the ring via a bolt axial guidance. For heavy loads and medium speed. Because there is more inside the bearing grease storage space, so lubrication intervals have been extended. KR ... PP curve roller is in contact with the seal structure. Using a temperature of -30 ℃ -100 ℃.

KR and KR ... PP curve roller
KRV and KRV ... PP curve roller KRV and KRV ... PP type curve rollers
KRV, KRV ... PP curve roller and KR, KR ... PP curve roller same structure, only that they are full complement needle roller bearings. They can withstand heavy loads and low speeds. And must always grease.

NUKR curve roller
This series curve roller is double row full complement cylindrical roller structure. Cylindrical roller bearings like the same with the outer ring axially guided by the rolling body pressed into the outer casing and the wall composed of high-level effect of the gap seal.
This curve can withstand particularly high wheel loads, as well as due to the axial roller guide can also withstand the impact of axial load.

KRE, KRE ... PP, KREV, KREV ... PP, NUKRE curve roller
All models are available with eccentric roller curve supply. The end face of the roller bolt grooves can be adjusted. The bolt face marked "HSB" Department said eccentric sleeve highest point.