The hardness of the Fag bearing heat treatment workpiece shall be tested with a durometer. Phr series portable surface Rockwell hardness tester is very suitable for testing the hardness of surface heat-treated workpieces, and can test various surface heat-treated workpieces with an effective depth of more than 0.1mm. It has the advantages of simple operation, convenient use and low price. It can directly read the hardness value.
Surface heat treatment is divided into two categories: one is surface quenching and tempering Fag bearing heat treatment, which uses vibration absorption or vibration isolation devices to reduce or isolate fag bearing noise.
Allowable speed: in the environment with correct installation and good lubrication, the allowable speed is 0.3-0.5 times the limit speed of Fag bearing heat treatment. Under normal circumstances, it is appropriate to use 0.2 times of the limit speed.
Allowable inclination angle: generally, the shaft of Fag bearing heat treatment is not allowed to tilt relative to the housing hole. If there is any inclination, it is not more than 2 ‘.
Allowable temperature: generally, FAG bearings are allowed to work at an ambient temperature of -30 ℃ -150 ℃ under the conditions of normal load, high temperature resistance of the lubricant and sufficient lubrication.
When Fag bearing heat treatment rotates, the raceway surface of inner ring and outer ring is in rolling contact with the rolling element, so the running track is a dark surface. The bearing running track attached to the raceway surface is not abnormal, so the load condition can be known. Therefore, when the bearing is removed, please pay close attention to and observe the running track of the raceway surface. If you carefully observe the running track, you will know that it only bears radial load, bears large axial load, one-way bearing bears moment load, or there is extreme rigidity inequality on the bearing housing. It can be checked whether the unexpected load is added to the bearing and whether the installation error is large, which will become a clue to investigate the cause of bearing damage.
If there is no wrong choice and it can be used correctly, it will take a long time before the service life of fag bearing. In this case, the damage state is peeling. On the other hand, there is the early damage of the bearing, which is accidental and can’t stand the use. As the cause of this early damage, there are insufficient consideration on the use and lubrication, and then there are foreign matter intrusion, the error of bearing assembly and the deflection of the shaft, the insufficient Research of the bearing on the shaft and the bearing housing, etc.