1, bearing rings relative to the status of the load relative to load direction of rotation or swing of the ferrule should select the interference fit or transition fit. Phase with the load direction, the rings should be selected gap. Liquidity support to the bearing can not be separated, it should be relative to the load direction for the fixed rings as swimming ring, select a clearance fit transition fit.

2, the type and size of the load when subject to shock loads or heavy-duty, the general should be chosen higher than normal, closer co-ordination of the light load. Divided, with the load the greater the profit the greater the ratio of the radial equivalent to the size of the radial bearing load with dynamic load of PR and radial rated dynamic load of Carload size of the PR / CR light load less than or equal to 0.07 of the normal load is greater than 0.07 to 0.15 greater than the heavy-duty 0.15

Bearing size bearing size increases, the choice of interference with the profit the greater, the greater the gap with the gap.

4, the bearing clearance interference fit will lead to reducing the bearing clearance, bearing clearance should be tested after installation to meet the requirements for thecorrect choice of co-ordination and bearing clearance.

5, other factors shaft and housing materials, strength and thermal conductivity; external and thermal conductivity of heat generated in the bearing ways and heat, with the choice of performance and so affect the bearing installation and adjustment.