Inspection
and removal of oil-free bearings, oil-free bearings first record
bearing appearance, to confirm the remaining amount of lubricant,
sampling, cleaning oil-free bearings. Cleaning agents generally use gasoline, kerosene.
Remove
the oil-free bearing cleaning, sub-rough wash and fine wash, put the
metal mesh in the container first, so that the bearings do not directly
contact the dirt inside the container. Rough wash, if the bearing with dirt rotation, will damage the bearing rolling surface, should be noted. In the rough wash oil, use the brush out of grease, sticky material, the basic clean, into the fine wash.
Fine washing, is the imported bearings in the cleaning oil side of the rotation, while carefully cleaned. In addition, cleaning oil should be constantly changed to keep clean.
Maintenance and judgment of imported bearings
To
determine whether the re-use of the imported bearings can be reused, to
check the bearing after cleaning, carefully check the raceway surface,
rolling surface, with the surface of the state, the wear of the cage,
Suzhou imported bearing clearance is increased and whether the impact of
size Accuracy of the damage, abnormal. Non-separation of small ball bearings, etc., with one hand flat end
inner ring, rotating outer ring to confirm whether the smooth.
Tapered roller bearings and other separate bearings, the rolling body, the outer ring raceway surface were checked.
Large bearings can not be rotated by hand, pay attention to check the
rolling body, raceway surface, cage, retaining the appearance of the
surface, the higher the importance of bearing the more careful to check.
Judging
whether the imported bearings can be used again, according to the
degree of damage of Suzhou imported bearings, mechanical properties,
importance, operating conditions, inspection cycle and other related
factors to decide. However, if the inspection found the following defects, the bearings can not continue to use, need to replace the new bearings.
(A) any inner ring, outer ring, rolling body, any one of the cracks or cracks.
(B) any one of the rings and rolling elements is broken.
(C) rolling surface, ribs, rolling body has obvious abrasions.
(D) the cage is worn out clearly, or the rivet is loosened.
(E) raceway surface, there is corrosion on the rolling body or scars.
(F) the raceway surface, the rolling body has a serious indentation or bruise.
(G) There is a significant creep on the outer diameter of the inner or outer diameter of the inner ring.
(H) Significant discoloration due to overheating.
(I) Suzhou oil-free bearings, seals or dust caps filled with grease are damaged.
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