FAG bearings at work, due to the effects of the external or internal factors, so that the original clearance changes, loss of precision, even causing "killed" called clearance change failure. External factors, such as excessive interference, installation is not in place, expansion due to temperature, instantaneous overload etc, intrinsic factors, such as the residual austenite and residual stress in an unstable state, and so are the main cause failure of clearance changes.
1. Rotating outer ring and carefully washing the cage, junction of the rolling elements and raceways, you need to thoroughly clean any oil residue was previously hidden part. Rinse the bearings should be attached neighbor dry cleaning, clean-lined neutral support, or in far-infrared drying oven slowly. Since even dry cleaning neighborhoods drying or drying, the whole process should not take the FAG bearing, adhere to any frame or rolling elements. FAG bearings-oil delivery in practice before the test can remove oil sealed packaging, and immersed in the acid-free 3% of kerosene or gasoline to clean.
2. Upon request, check the drip lubricant and instant delivery, dry or dry bearings. At this point no oil film in order to protect the external surface of FAG bearings, inspectors are not allowed in the whole process of direct contact with the skin, the operator should wear clean gloves, hand painted with rust, but must avoid the appearance of rust inhibitor hybrid rolling bearing's hands, or deviations in measurement.
3. Should be dealt with immediately delivered or rusty stock, in the course of checks should be completed, check the bearing. Takes too long to avoid corrosion. Note the use of clean and oil-free pure gasoline, can also cause corrosion.
4. Bearing has dry or dry of, should by provides check no bearing oil film protection of appearance surface drops into lubricants and instant delivery, at this point, entire check process in the, does not allows directly contact skin of human, operation personnel should wearing clean of gloves, hand art with rust, but must avoid in rust agent of FAG bearing scroll surface mixed hands, otherwise it will measurement results of deviation.
5. Bearing inspection is completed immediately after delivery or rust in the inventory process, seize complete the check should not last too long causing corrosion. Note the use of clean and oil-free pure gasoline, can also cause corrosion.
Grinding quality on FAG bearing premature failure of effects from above of test results can found, roll road side of grinding crack and grinding burn is caused rings cracked, and led to bearing premature failure of a directly causes, and this cases reveals of crack macro form and grinding burn of distribution features description, roll road of original location had partial or roll road of r does not round, makes roll road of side grinding allowance increases, dang rough mill stage into to volume large, and grinding speed fast Shi, entire roll road on produced has does not uniform of grinding. If the wheel is not finished in time, will lead to pore clogging debris embedded or adhesion cause grinding wheel passivation, this causes increased wheel unbalance, spindle vibration, even machine tool vibration grinding chatter. Clearly cyclical changes in the grinding force, creating intermittent burned stripes.


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