Ceramic bearings Introduction

Kunshan Bearing: 1, ceramic bearings with high temperature, cold, wear resistance, corrosion resistance, anti-magnetic insulation, oil-free self-lubricating, high-speed and other features. Can be used in extremely harsh environments and special conditions, can be widely used in aviation, aerospace, marine, petroleum, chemical, automotive, electronics, metallurgy, electric power, textile, pumps, medical equipment, scientific research and national defense and military fields, is the application of new materials, high-tech products.
    2, ceramic backing bearings rings and rolling all-ceramic materials, zirconium oxide (ZrO2), silicon nitride (SisN4), silicon carbide (Sic) three. Holder PTFE, nylon 66, polyether imide, zirconium oxide, silicon nitride, stainless steel or special aviation aluminum, thereby expanding the application of the ceramic bearing surface. Such as: high-speed bearings, high temperature bearings, corrosion-resistant bearings, magnetic bearings, electrical insulation bearings.
    (1), high-speed bearings: a cold, mechanical flexibility of small, anti-stress, poor thermal conductivity, light weight, low friction, etc., can be applied at 12,000 rev / min -75 000 rev / min high-speed spindles and other precision equipment;
    (2), high temperature bearings: material itself has a degree temperature 1200 ℃, and good self-lubrication, temperature at 100 ℃ -800 ℃ temperature difference between the result does not produce a result of the expansion. Can be used in furnaces, manufacturing plastic, steel and other high temperature equipment;
    (3), corrosion-resistant Roller bearing: material itself has a corrosion-resistant properties, can be applied to acids, alkalis, inorganic and organic salts, water and other fields, such as: plating equipment, electronic equipment, chemical machinery, shipbuilding, medical equipment, etc. .
    (4), magnetic bearings: do not smoke because of non-magnetic dust, can reduce the bearing off in advance, and big noise. Available in the demagnetization device. Precision instruments and other fields.
    (5), electrically insulated bearings: resistance force high arc injury-free bearings, available in a variety of electrical equipment insulation requirements.
    (6), vacuum bearings: ceramic materials due to the unique properties of self-lubricating oil, in an ultrahigh vacuum environment, can not be achieved to overcome the plain bearing lubrication problem. Note: The above five categories bearings, the same set of bearings can be applied to high-temperature, high-speed, pH, magnetic field, Non-Insulated, but different material properties (see performance table of rare earth ceramic materials) so please customers choose products, applied according to their own situation, to select the most suitable material ceramic bearings.
    3, the bearing type list
    (1), deep groove ball bearings (technical grade is: P4, P5, P6, P0) deep groove ball bearings, the most representative of rolling bearings, widely used, can bear radial load and axial load. For high-speed rotation and low noise, low vibration occasions or steel bearings can not be applied to heat, cold, corrosion, magnetic, non-insulated and other fields.
    (2), aligning ball bearings Self-aligning ball bearing outer ring raceway spherical, self-aligning, can be added for misalignment and shaft deflection caused by the error. Shaft and housing for generating different parts of the heart or shaft deflection and high-temperature, low-cold, corrosive, non-magnetic insulation requirements aligning parts. Note: not more than 3 degrees inclination.
    (3), single row angular contact ball bearings (technical grade is: P4, P5, P6, P0) angular contact bearings for high-speed and high-precision rotation, at high temperatures, magnetic fields, which do not affect the accuracy of water, and can withstand the synthesis load . Standard contact angle of 15 °, 30 ° and 40 °, the contact angle the greater the axial load capacity greater the contact angle is smaller bearings can bear radial load and axial load. Generally taken installed in pairs. Please take note when purchasing.
    (4), one-way thrust ball bearings Thrust ball bearings, is made with a ball rolling raceway washer-shaped rings and assemble the ball cage. Can withstand axial load, but can not bear radial load.
    4, the characteristics of ceramic bearing material
    (1) (see performance table bearing commonly used materials)
    (2) performance comparison and bearing steel, bearing steel weight is 30% -40%, can reduce the load of the centrifugal force generated by the moving body increases and the slip. Because of the high wear resistance, speed is 1.3-1.5 times the bearing steel, high-speed rotation can reduce the channel surface damage. Modulus of elasticity higher than 1.5 times of bearing steel. Elastic force is small, can reduce the load generated by high levels of deformation. Hardness is bearing steel 1 times, can reduce wear. Compressive bearing steel is 5-7 times. Bearing steel thermal expansion coefficient of less than 20%. The friction coefficient is less than 30% of bearing steel, can reduce the heat generated by friction can be reduced due to high temperature caused by the failure of the bearing off in advance. Tensile, bending and metal equivalent.
    5. Installation of ceramic bearings ceramic bearings inner diameter, outer diameter and other dimensions are the countries to develop steel bearing P4, P5, P6 class standard size. Due to a low coefficient of thermal expansion ceramic materials, heat transfer performance of small, elastic measuring characteristics of small, need to be installed with the attention.