NSK bearing cage fracture belongs to the occasional non-normal failure mode, from the following five aspects we analyse the causes of NSK bearing cage fracture.
Poor lubrication problems 1, NSK bearings: NSK bearings running at a lean, easy to form adhesive wear, so the work surface condition deteriorated, adhesive wear tear easy entering of cage, cage produced abnormal loads, is likely to cause fracture of cage.
2 creep phenomena, NSK bearings: creep sliding phenomenon of multiple rings, in the case of insufficient interference the mating surfaces, move around to the loading point direction due to sliding, ring relative to the shaft or casing to the circumference of location deviation phenomena.
3, NSK bearing cage material defects: cracks, large effects of metal inclusions and shrinkage, bubbles and riveting defects out of nails, pads nail or combination die for two and a half gap, such as severe cold injury may cause fracture of cage.
4, and NSK bearing maintained frame exception load: installed does not in place, and tilt, and had Ying volume had large, easy caused tour gap reduced, increased friction health hot, surface softening, premature appears exception peeling, as peeling of extended, peeling foreign body entered maintained frame Pocket Hole in the, led to maintained frame running block and produced attached load, increased has maintained frame of wear, so deterioration of loop role, will may caused maintained frame fracture.
5, NSK bearings of hard foreign bodies penetrated outside rigid foreign body penetration of aggravate the wearing of cage and exceptions are produced additional load, are also likely to lead to fracture of cage.
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