Precautions for the use of joint bearings

- Aug 05, 2019-

The allowable operating temperature of the joint bearing is mainly determined by the mating material between the sliding surfaces of the bearing, especially the sliding surface of the plastic material of the self-lubricating joint bearing, and its bearing capacity will decrease at high temperatures. For example, when the sliding surface material of a lubricated joint bearing is paired with steel/steel, the allowable operating temperature depends on the allowable operating temperature of the lubricant. However, for all lubricated and self-lubricating joint bearings, they can be used in the temperature range of -30 ° C ~ +80 ° C, and maintain the correct bearing capacity.


The inclination of the joint bearing is much larger than that of the generally adjustable rolling bearing. It is suitable for use in the support part where the concentricity is not high. The inclination of the joint bearing varies with the size, type, sealing device and support form of the bearing. The inclination angle of the radial spherical plain bearing is 3° to 15°, the inclination angle of the angular contact joint bearing is 2° to 3°, and the inclination angle of the thrust joint bearing is 6° to 9°.


In any case, the joints selected for the joint bearing shall not cause uneven deformation of the ferrule. The selection of the mating nature and grade must be determined according to the working conditions such as bearing type, support form and load size.


The loading and unloading of the joint bearing should follow the principle that the force applied by the assembly and disassembly cannot be transmitted directly through the spherical sliding surface. In addition, auxiliary loading and unloading tools, such as sleeves, detachers, etc., should be used to directly and uniformly apply the loading and unloading force applied by the outside to the ferrule to be fitted, or to perform load-free loading and unloading by an auxiliary method such as heating.