Cylindrical Bushes Bearing selection
Six factors related to bearing life:
(1) load P
The greater the load, the shorter the service life of the bearing;Under no circumstances shall the maximum load exceed the theoretical maximum allowable load value.
(2) speed V
The higher the speed, the shorter the service life of the bearing;Under no circumstances shall the maximum sliding speed exceed the theoretical maximum allowable value.
(3) the PV value
The working life of the bearing depends on the size of the PV value, that is, the actual load P times the sliding velocity V. The smaller the PV value, the longer the bearing life.
(4) the temperature
The service life of the bearing also depends on the temperature when the bearing is used. The higher the temperature, the shorter the service life of the bearing. Therefore, the heat dissipation characteristics of related components should be considered as far as possible in the design and selection.
(5) surface roughness of the parts
For the shaft with alloy steel or hard chrome plating, the service life of the bearing can be significantly increased when the surface roughness Ra=0.4-0.63.
(6) other factors
Other factors such as lubrication conditions.