in addition, also need to consider the impact of the spindle thermal elongation .

Rotating rings bearing manufacturer the amount of interference to the extent possible should also get smaller. As long as the operating temperature and ensure the effect of thermal expansion, and the maximum speed of the centrifugal force, resulting in a tight fit so as not to creep or sliding surfaces. Fixed ring size according to the work load and bearing size, select small clearance fit or interference fit, too loose or too tight is not conducive to maintaining the original shape exactly.

(3) under the conditions of taper roller bearing  such as in high-speed operation, and higher operating temperature, special attention should be rotating rings can not be too loose to prevent eccentric, as well as non-fixed ferrule with a gap to prevent ferrule deformation under load and vibration excitation.

(4) to take a small fixed ring interference fit condition that matches the shape of the surface of both sides are very high precision and a smaller roughness, or cause installation difficulties removal more difficult, in addition, also need to consider the impact of the spindle thermal elongation .

(5) using the pair of angular contact ball bearing spindle, mostly lighter loads, the amount of interference, such as too large, then the internal axial preload amount will be significantly larger, resulting in adverse effects. Use double row cylindrical roller bearings and tapered roller bearing spindle spindle, its load is relatively large, so its interference with the also relatively large.