Joint bearing is a kind of spherical sliding bearing, whose sliding contact surface is an inner sphere and an outer sphere, which can rotate and swing at any Angle when moving. It is made of surface phosphating, blasting, padding, spraying and other special processing methods. Joint bearing has the characteristics of large load capacity, impact resistance, corrosion resistance, wear resistance, only aligning, good lubrication and so on.
Joint bearings can bear large loads. According to its different types and structures, it can bear radial load, axial load or radial and axial load. Because the outer sphere of the inner ring is inlaid with composite material, the bearing can be self-lubricating in operation. Generally used for low speed swing movement, and low speed rotation, can also be in a certain range of Angle tilt movement, when the supporting shaft and shaft shell hole concentricity is large, it can still work normally. Self-lubricating joint bearings are used in water conservancy, professional machinery and other industries.
What should we pay attention to when the joint bearing device?
1. Selection and control of tolerance of shaft and bearing room: After TIMKEN bearing is pressed into the bearing room, there is obvious "rustling" feeling by hand rotation, which may be caused by too large tolerance of shaft or poor roundness of shaft.
2. Prevent the assembly of foreign bodies: when the joint bearing is installed on the rotor to do dynamic balance, it is easy to enter the iron filings generated by dynamic balance into the bearing, so it is best to do dynamic balance before loading the bearing.
3. Bearing assembly mode: Because bearings are high-precision products, improper assembly is easy to cause damage to joint bearing channels, resulting in bearing damage.
4. Prevention of paint rust: The characteristics of paint rust are mostly in the sealed motor. The sound of the motor is very good during assembly, but after being put in the warehouse for some time, the abnormal sound of the motor changes greatly, and there is serious rust phenomenon when the bearing is removed.
