Plastic bearing failure exposed during operation is often the case, so it doesn′t need raw. Revealed a failure, judgment and disposal is critical.
1. the bearing temperature is too high 　　
At the time of the machine, installation of FAG bearings parts to allow a certain degree of temperature when using hand stroked the body shell, should not feel hot as normal, on the other hand it indicates that bearings temperature is too high. 　　
Duanyou of bearing temperature is too high: lube oil quality poor or deteriorating, lube oil viscosity too high body assembled too tight (the space is not sufficient); plastic bearing too tight; bearing washer on the shaft or housing rotation; load too large; maintain or roll the fragmentation of plastic bearings. 　　
2. bearing noise 　　
Bearing in the functioning of the Office are permitted in the tiny sound, if the sound is too large or unusual noise or impact sound, then the bearing is faulty. 　　
Initiation of bearing noises duanyou more complicated, one is the bearing inner and outer rings fit exterior wear. Because this type of wear, damage the plastic bearings suitable relationship with shell, bearing and axle, resulting in accurate location is out of the way of an axis, FAG axis in abnormal noise of high-speed movement initiation. When you are tired of bearing, its exterior metal flakes, can also make abnormal noise of radial clearance of bearings increase initiation. Beyond this, bearing lubrication is not sufficient, forming dry friction bearing Crush initiation and unusual sound. Plastic bearings wear loose hanging after also damage to initiation of abnormal sound of bearings. Disassembly of the bearing when arresting, bearing damage judgments based on bearing failure and destruction of duanyou.
3. van Variant 　　
Bearing raceways and rollers on the contact surfaces revealed warp of potholes, decrypt bearing initiation of van Variant. Its duanyou is in very large plastic bearings under static load or shock load utility, Office part of the stress exceeds the material appearance of Flex limit, this situation normal to happen on the low speed rotation of the bearing.
4. bearing ring cracked 　　
Initiation of crack of bearing rings duanyou likely the bearings fit too tight, lax exception or plastic bearing inner ring, forgive a variant of the plastic bearings, FAG bearings installed external operation is not good. 　　
5. maintenance of fragmentation 　　
Its duanyou are lubricants are not sufficient, roll crusher, skew, and so on. 　　
6. on a roll body metal paste 　　
May duanyou is body roll is stuck in the maintenance or lubrication is not sufficient. 　　
7. seat Raceway severe abrasion 　　
There stands probably circle falls into the foreign body and grades is not consistent with insufficient lubricating oil or lubricating oil.