Domestic bearing industry is now ranked third in the world maintains a roller and guide surface of the rings between sliding friction (not keep the plane for between roller sliding friction); Roller surface and surface of the rings files between sliding friction; The lubricant viscosity resistance; Sealing device of sliding friction etc, auto-hub bearing size depends on the table of the bearing type, size, and the load, speed, lubrication, sealing and so on many kinds of factors.

In need of low friction torque instruments and machinery, usually choose deep groove ball bearings, cylindrical roller bearings and self-aligning ball bearings, to bear radial load; Choose a single thrust ball bearing to the load bearing, if bear joint load, can choose Angle contact ball bearing, in load Angle and the contact Angle is basic consistent, clutch bearing type size parameter table can get minimum friction torque; If two Angle of gap is too big, can choose to heart and thrust bearing assembly solution to.
Planetary gear transmission of bearing solutions choose low friction torque when the bearing, the structural design should avoid on the back the sealing device. At the same time, to low friction torque bearing lubrication method, should use drops of oil lubrication, oil mist lubrication and oil-gas lubrication



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