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Easy to make the main reason FAG bearing metal peeling:
Axial, FAG bearing inner, outer ring with stepped surface is not vertical, shaft bending, FAG bearing bore not concentric, causing the FAG bearings, installation of skew, make the FAG bearing raceway bearing heavy load leads to metal flake.
Two, FAG bearing the impact force and alternating load, easy to make the raceway and rolling body surface fatigue spalling. Repeated changes of contact stress of the surface of the rolling body, can cause metal fatigue, the rolling surface pitting and spalling of fine. The spalling start small, then will dent and gradually expanded, a large area of flaking.
Three, FAG bearing inner ring and shaft or the outer ring and the seat hole between the mating surfaces into iron or hard debris, causing FAG bearing installation rolling deformation, the FAG bearing raceway local load is overweight, metal flake.
The main causes of cracks in the FAG bearing on the following:
A crack, breakage: FAG bearing installation, disassembly improper, FAG bearings do not have the necessary tools and auxiliary tool in the installation process, directly on the FAG bearing with a hammer and other tools, excessive force or knocking on the uneven stress will make the face, FAG bearing rib, cracks or damage.
Two, the fatigue crack: FAG bearings installed in the shaft and FAG bearings, FAG inner hole of the bearing and FAG bearing outer cylindrical surface contact, raceway bearing parts of contact is not uniform, so that the FAG bearing ring or rolling crack.
Three, the hard and brittle crack; crack is due to the internal defects and heat treatment hardness FAG bearings in the manufacturing process of poor quality or material caused high.
Four, the vibration of crack: FAG bearings are in use by a larger impact load caused by the crack. Rolling of FAG bearing rings and rolling bodies generally made of high carbon chromium bearing steel FAG, rings and rolling elements with high hardness, although it can bear larger load, but too much impact load will make the FAG bearing to work under severe vibration, the breakage and FAG bearing crack.