First: KOYO bearing cage abnormal load
Installed not in place, tilt, easy cause of interference such as excessive clearance reduced to intensify the friction and heat, surface softening premature peeling exception, with the expansion of the peeling, flaking foreign body into the cage pocket hole, resulting in the cage operation block and generate the additional load, exacerbated by the wear of the cage, the role of such a cycle of deterioration, it may cause to keep the frame breaking.
Second: Bearing poor lubrication
Bearing operation in the state of the poor oil, easy to form the adhesive wear, deterioration of the work surface state, the adhesive produced by wear tear things easy to enter the cage, the cage abnormal load may cause the cage fracture.
Third: the intrusion of KOYO bearings rigid foreign body
The intrusion of external hard foreign body, adding to the wear of the cage and the abnormal additional load may lead to cage fracture.
Fourth: Bearing creep
Creep refers to the multi-ring slippage, with the face of interference is less than the case, the deviation in position to the circumferential direction because of the slide leaving the load point around the direction of movement, resulting in the ring relative axis or shell.
Fifth: KOYO bearing cage material defects
Cracks, large pieces of different metal inclusions, shrinkage, bubble and riveting defects, missing nails,
Pads, nails, or two semi-cage combination of surface gap seriously riveting injury and so may result in the cage fracture.



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