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In order to judge whether the disassembled fag bearing can be reused, it should be checked after Cleaning Methods the bearing is cleaned. Carefully check the state of raceway surface, rolling surface and mating surface, the wear of cage,
the increase of fag bearing clearance and whether there are damages and abnormalities related to the decline of Cleaning Methods dimensional accuracy. If the outer ring supports the inner ring smoothly, use one hand to confirm whether the inner ring supports the small bearing smoothly.
Tapered roller bearings and other separable bearings can inspect Cleaning Methods the raceway surfaces of rolling elements and outer rings respectively.
Since large bearings cannot be rotated by hand, pay attention to the appearance of rolling Cleaning Methods elements, raceway surfaces, cages, edge retaining surfaces, etc. the higher the importance of bearings, the more careful the inspection is.
The judgment of whether it can be reused is determined by considering the damage degree, mechanical performance, importance, operating conditions and the period until the next maintenance of fag bearing. However, if there are the following defects, it can no longer be used. The bearings must be replaced with new ones.
There are cracks or notches on any one of the inner ring, outer ring, rolling element and cage.
Any one of the ferrule and rolling element is broken.
There is rust and damage on the raceway surface and rolling element.
There are serious indentations and scratches on the raceway surface and rolling element.
There is obvious creep on the inner diameter surface of the inner ring or the outer diameter surface of the outer ring.
Discoloration caused by heat is obvious.
The bearing sealed with grease, sealing ring or dust cover are obviously damaged.
Fag bearing cleaning
When removing the fag bearing for maintenance, first record the appearance of the bearing, Cleaning Methods confirm the residual amount of lubricant, and wash the bearing after sampling the lubricant for inspection. As a cleaning agent, gasoline and kerosene are commonly used.
The cleaning of the removed bearing can be divided into coarse cleaning and fine cleaning. Put the metal mesh pad on the bottom of the container respectively, so that the bearing does not directly Cleaning Methods contact the dirt of the container.
During fine cleaning, if the bearing rotates with dirt, it will damage the rolling surface of the bearing, which should be paid attention to. In the coarse cleaning oil, use a brush to remove the grease and Cleaning Methods adhesion. After it is roughly clean, turn to fine cleaning.
Fine cleaning is to carefully clean fag bearing while rotating in Cleaning Methods cleaning oil. In addition, the cleaning oil should also be kept clean.