FAC bearing inner ring fixed methods: FAG bearings with inner ring and outer ring, the fixed way is: 1, FAG bearing shaft shoulder fixed Bearing inner ring axial fixation rely on the shoulder and interference. Applicable to both ends fixed supporting structure. Simple structure, small outer profile size. 2, FAG bearings by fixed Bearing inner ring by the shoulder and lock nut axial fixation. Affordable small two-way axial load. Axial structure size is small. 3, FAG bearing lock nut is fixed FAG bearing inner ring by the shoulder and lock nut axial fixation. And a lock washer with locking, safe and reliable, suitable for high speed and overloaded. 4, FAG bearings fixed end thrust washer Bearing inner ring by the shoulder and shaft end ring axial fixation. Shaft end ring on the shaft end with screws. Set screw should be locking device. Should not be applicable to the shaft end cutting thread or space limit. 5, FAG bearing sleeve is fixed Set set of inner hole of the radial dimension is compressed and clamped on the shaft, to realize the bearing inner ring axial fixation. 6, FAG bearing sleeve is fixed Withdrawal of the same as the set set of clamping way. But withdrawal sets with special nut, bearing loading and unloading of convenient, suitable for radial load is bigger, smaller double row spherical bearing axial load on the optical axis fixed.