The reason of high temperature of bearing: lubricating oil quality does not meet the requirements or deterioration, the oil viscosity is too high; mechanism assembly tight (spaces); one-way preloaded ew2 thrust bearing; bearing race rotation on the shaft or shell; overload; bearing retainer or rolling body fragmentation.

Rolling bearing is allowed in the work of the minor operation noise, if the sound is too loud or unusual noise or impact sound, it indicates that the bearing failure.
Causes noise rolling bearings are more complex, one is the bearing outer ring, the surface wear. Due to the wear, destroyed the fit between bearing and housing, a one-way bearing and shaft, causes the axis deviates from the correct location, the axis in high-speed motion noise. When the ew2 thrust bearing fatigue, its surface metal flake, also bearing radial clearance increases the noise. In addition, insufficient lubrication of the bearing, the formation of dry friction, as well as bearing broken produces abnormal sound. After bearing wear loose, loose cage damage, also can produce abnormal sound of bearing damage.
Rolling bearing inspection is disassembled, can determine the fault and damage causes of one-way bearing according to ew2 thrust bearing the damage of bearing.
Constant pressure pretightening force is the so-called use coil springs, disc springs, given the appropriate preparation method of bearing. When in use, even if the changes in the relative position of ew2 thrust bearing pre load, method. What types of seal bearing in use? It is even, the change of the relative position, pre load can also maintain a certain.