SKF bearing failure occurred during operation is often the case, there is no need to fuss. There is fault, judgment and treatment is the key.
1, axle bearing overheating: when the institutions, mounting SKF bearings parts allows a certain degree of temperature, when you touch body shell with your hand, should not feel hot to normal, instead it indicates that the bearing temperature is too high.
Bearing high temperature causes are: quality does not meet the requirements or deterioration of lubricant, lubricant viscosity is too high; body fitted too tight (insufficient gap); bearing Assembly too tight; bearing washer on the shaft or in the shell rotation; load too large; bearing cage effects of fragmentation, such as or.
2, bearing noise: minor operation is allowed in the work of rolling bearing noise, if the sound is too loud or abnormal noise or impact sound, then SKF bearings have failed.
Causes of rolling bearing noise: more complex, 1) is the inner and outer rings mating surfaces of the bearing wear. Due to the wear, undermined the SKF bearings tie relationship with shell, bearings and shafts, causes the axis deviates from the correct location, noise resulting from the axis in high-speed motion. When you are bearing fatigue, its surface metal flake, also bearing radial clearance increases the noise. 2) insufficient lubrication of the bearing, the formation of dry friction and bearings broken produces abnormal noises. 3) after bearing wear loose, loose cage damage, would also have abnormal noise of bearing failures. When removing check of rolling bearings, according to bearing damage to determine causes of bearing failure and damage.
3, the Raceway surface metal Flake: rolling element and the inner and outer rings of SKF bearings are subjected to cyclical fluctuation load on Raceway surface, resulting in periodic changes of contact stress. When a stress cycle count reaches a certain number, scroll or face inner and outer ring raceways produces fatigue spalling. If the bearing load is too large, will exacerbate this fatigue. In addition, the bearing is not being installed, axis bending, also have a Raceway spalling phenomenon. Raceway on bearing fatigue peeling can reduce the running accuracy of the shaft, enabling body to vibrate and noise.
4, bearing burn: burn the bearing raceways, rolling elements on the temper. Burn quality reasons is lack of lubrication, lubricants in General does not meet the requirements or deterioration, as well as the bearing Assembly too tight.
5, plastic deformation: SKF bearing raceways and rollers do not appear on the contact surface pits, evenly, notes bearing plastic deformation. A result of a large static bearing load or under impact loading, local stress more than material yield limit of the working surface, which generally occurs on the low speed rotation of the bearing.
6, housing washer cracks: cracks can be caused by bearing retainer bearing too tight, SKF bearing inner ring of foreign or loose, inclusive deformation of the bearing, install the bearing surface processing such as bad.
7, cage fragmentation: the reason for this is lack of lubrication, rolling crush, seat tilt, and so on.
8, glue the metal cages on a rolling, possible causes are the rolling was stuck in a cage or lack of lubrication.
9, seat Raceway excessive wear: fall into the foreign body may be circles, lack of lubricating oil or lubricant brands is inappropriate.



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