1, The bearing rings relative to the load condition of the load with respect to the direction of rotation or swinging rings should be chosen interference fit or transition fit. Fixed with respect to the load direction of the ferrule should choose loose fit. When in a non-separable bearings for liquidity support, with respect to the load direction should be fixed ferrule as swimming rings, select clearance fit or transition fit.

2, The load type and size when subjected to shock loads or heavy, the general should choose than normal, closer cooperation at light load. For radial bearings load size radial equivalent dynamic radial load PR and CR rated dynamic load ratio to divide, the greater the interference with the greater load. Load size PR / CR light load is less than equal to 0.07 normal load is greater than 0.07 to greater than 0.15 0.15 Heavy Duty

3, The bearing size increases as bearing size, select the interference fit interference larger gap with the gap bigger.

4, The bearing clearance with an interference fit will result in reduced bearing clearance, the latter shall verify whether the installation of the bearing clearance to meet the requirements in order to properly select and fit the bearing clearance.

5, The impact of the shaft and bearing material other factors, the strength and thermal performance; the impact of external thermal pathway and heat generation and heat in the bearing, bearing installation and adjustment of property and so on with the choice.