When mounting a bearing the press fit should be on the rotating ring and a clearance fit on the stationary ring to allow for temperature expansion. Methods used for mounting are as follows: 1.) Cold mounting – involves the use of a press & fixtures or nuts and bolts. 2.) Temperature control – involves heating the bearing rings to expand them by means of oil, a hot plate, oven or an induction heater. 3.) Hydraulic pressure – involves injecting pressure between the bearing bore and shaft to lessen the friction and reduce the force required for mounting (this is normally used for installation of tapered bore bearings). The correct bearing fits can only be selected if the correct tolerance for the shaft and housing has been utilized. All bearing manufacturers follow the ISO designated fits system to specify these tolerance bands – (listed in published tables).