Introduction and selection of joint bearings

- Jun 21, 2019-

Bearing knowledge of joint bearings:

First, the basic point of view

Radial dynamic load rating: Radial load when the surface dynamic stress of the joint bearing reaches a large allowable stress.

Axial dynamic load rating: The axial load when the surface dynamic stress of the joint bearing reaches a large allowable stress.

Lifetime: The total number of swings of the pivot bearing when the coefficient of friction of the joint bearing reaches the delineated limit or the amount of wear of the hub bearing overrides the delineated limit.

Radial Equivalent Dynamic Load: A constant radial load at which the snagging stress of the joint bearing surface is the actual load. It is used to account for the service life of radial bearings, angled bearings and rod end bearings under radial and axial loads. In general, the recommended axial load for the centripetal and angular snagging bearings should not exceed 30% of the radial load, while the recommended axial load for the rod end bearing should not exceed 20% of the radial load.

Axial equivalent dynamic load: A constant axial load under which the snagging stress of the joint bearing surface is the actual load. Used to account for the service life of thrust hub bearings under radial and axial loads. In general, the recommended radial load for thrust hub bearings should not exceed 50% of the axial load.

Swing angle: The angle between the swinging ring and the two extreme positions. 

Pendulum: When a point on the swing ring of a pivot bearing swings two β angles, it is a pendulum.

Second, choose the joint bearing

When selecting a joint bearing, the load of the joint bearing is small, the deflection and transmission mode, the movement mode of the joint bearing, the premise, the lubrication method, the positioning (radial and axial), the required service life, and the installation and disassembly requirements should be enriched. consider.www.wxjwbearing.com