Oil-bearing overhaul process and determine whether re-use

Oil-bearing overhaul under demolition, the first recorded appearance of bearing, to confirm the remaining amount of lubricant, after sampling, cleaning oil-free bearings. Cleaning agents commonly used in gasoline, kerosene.
Remove to clean oil-bearing sub rough wash and sperm washing, placed in the container first metal mesh, bearing no direct contact with the dirt container. Coarse wash, if the bearing with dirt rotation will damage bearings rolling surfaces, should be noted. In the crude oil washing, using a brush out of grease, adhesive material, basic clean, wash into the fine.
Sperm washing is imported bearings while rotating in cleaning oil, while carefully cleaned. In addition, cleaning the oil should be changed frequently to keep clean.
Bearing Inspection and judgment
Bearing determine when the removed the possibility of re-use, to wash after bearing inspection, carefully check the raceway, the rolling surface, with the state of the surface, cage wear, and whether Suzhou Bearing clearance and whether the impact of increased size loss of precision damage, abnormal. Non-separable type of small ball bearings, the inner flat end with one hand, rotating outer ring to confirm smoothly.
Tapered roller bearings and other separation of bearings, rolling elements can, the outer ring raceway surface were examined.
Large bearings because they can not rotate by hand, pay attention to check the rolling body raceway, cage, ribs and other surface appearance, the importance of bearing the higher the need to be cautious examination.
Judging whether imported bearings used again, according to the relevant factors to decide the degree of injury Suzhou imported bearings, mechanical properties, importance, operating conditions, inspection cycle. But check if found to have the following defects, the bearing can not continue to use new bearings need to be replaced.
(A) an inner ring, an outer ring, rolling body, a holder of any cracks or gaps.
(B) rings, rolling elements in any one fracture.
There are obvious scratches on (c) rolling surface, wall, rolling.
(D) the holder of wear apparent or obvious loose rivets.
(E) raceway, have rust or scratches on the rolling elements.
(F) raceway, there are serious indentation or bumps on the rolling elements.
(G) the inner or outer diameter surface of the radially inner surface of a clear creep.
(H) significant discoloration due to overheating.
(I) sealed grease Suzhou oil-bearing, seals or dust cover seriously damaged.