The structure and properties of paired tapered bearing

(1) paired tapered bearing the angular contact ball bearing deep groove ball bearing basic similar shape, there is a ring with only a wall, the other side slope. Compared with the same series of deep groove ball bearings with inner diameter specifications, the difference lies in the cage structure and with the number of the steel ball a little more. (2) paired tapered bearing in the deep groove ball bearing inner ring angular contact ball bearing with outer slope of the inner ring is completely general, such as the inner ring to the deep groove ball bearing 6204 generic row angular contact ball bearing 7204AC. (3) the angular contact ball bearing retainer is real shape or stamped, no need of rivets. (4) the limit speed angular contact ball bearing is higher than that of deep groove ball bearing the same size. (5) Crossed-roller-bearing can bear radial load, also can withstand a one-way axial load is larger, the contact angle is large ratio the bearing axial load and radial load is bigger. (6) even bear radial load, also produce axial force, so the general angular contact ball bearings are used in pairs. (7) the angular contact ball bearing Ding is, because of the effects of axial pre load after installation. slim bearings Can eliminate bearing internal clearance, so relatively improve the rotation accuracy of R bearing. The application example in the machine tool spindle high precision, can make the radial and axial spindle runout minimum. (8) two or more than two angular contact ball bearing group, can bear double direction axial load, or increase the bearing capacity of the single direction axial load. (9) paired tapered bearing the pre load can obtain more rigid and maintain long-term rotation precision characteristics of bearing the original.

Roller Bearing operating conditions of work

Most wheel Roller Bearing under heavy low-speed operating conditions of work, in general, the use of lubricating grease filling type of bearing lubrication can be subjected to extremely satisfied with the results achieved, the commonly used calcium-based grease grease, lithium-based lubricating grease, aluminum grease, and high temperature grease, etc., paired tapered roller bearing the user can choose the most suitable grease depending on the circumstances. Bearing seal Hand wheel bearings are sealed to prevent leakage of grease has been filled out, the other is to prevent outside dust, impurities and moisture intrusion inside the bearing and affect their normal work. Since the wheel bearings are mostly low-speed operation is under heavy load, LYSN bearings it is sealed with rubber seals type bearings and labyrinth seals two structures. The rubber seal structure itself has a simple structure, small footprint, reliable sealing performance advantages and has been widely used, but the downside is that when the high temperature rubber lip seal is easy to lose early aging, so the temperature wheel bearings under working conditions should work labyrinth seal. Three-row combination roller wheel bearings (slewing ring) Three-row roller slewing ring has three seat down and radial raceways separately from each other, Roller Bearing so that each row roller load can be determined exactly, can withstand all kinds of loads, Cylindrical roller bearing is the carrying capacity of the four products the largest one, 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 cranes and other machinery on. Double row angular contact ball slewing bearing (slewing ring) Double row slewing bearing has three seat, must be specially designed raceways. Double row slewing bearing axial, Roller Bearing radial size was relatively large, solid structure, particularly suitable to the requirements of the above average diameter of tower cranes, truck cranes and other handling machinery.

often accompanied by fatigue cracks

Contact fatigue spalling occurs in INA bearing surface , often accompanied by fatigue cracks , first produced from the contact surface of the following maximum alternating shear stress , and then extended to the formation of different surface flaking shapes, such as point-like pitting or pitting as spalling , flaking into small pieces called superficial peeling. Due to the gradual expansion of flaking surfaces , but often extend to the deep , forming deep peeling. Deep contact fatigue double row cylindrical roller bearing  spalling is a source of fatigue failure .
Continuous wear will cause spherical roller thrust bearing parts gradually damage and eventually lead to the loss of dimensional accuracy INA bearings and other related issues . Wear may affect the shape change , with the gap increasing and work surface morphology changes that may affect the lubricant or it reaches a certain level of pollution caused complete loss of lubrication , which makes bearings and even the loss of rotational accuracy can not operate normally . Wear failure is one of the kinds of bearings common failure mode, press the wear is usually divided into the most common form of abrasive wear and adhesive wear .