1. shoulder to rely on fixed bearing inner ring shoulder and interference to achieve axial fixation. It applies to both ends of the fixed support structure. Simple structure, small outside dimensions.
    2. circlip fixed bearing inner ring by the shaft shoulder and lock nut to achieve axial fixation. Can not withstand two-way axial load. Axial structure of small size.
    3. Lock nut bearing inner realization by the shaft shoulder and lock nut axially fixed. There are washers and lock, safe and reliable, suitable for high-speed, heavy-duty applications.
    The end face of the thrust washer bearing inner ring shoulder and realized by the ring axial shaft fixed. Shaft retaining ring in the shaft with screws. Fixing screws should be secured against rotation. Not suitable for cutting threaded shaft or space restricted applications.
    5. The tight sets fixed rely on tight housing bore radial dimension is compressed and clamped on the shaft to achieve a fixed axial bearing inner ring.
    6. Withdrawal sleeves Withdrawal sleeves fixed clamping sleeve the same way as tight. But withdrawal sleeves due to a special nut, bearing loading and unloading easy, suitable for large radial load, axial load smaller double row spherical bearings fixed on the optical axis.