Mounting designs for cylindrical bore bearings

Shaft locknut		End plate	Locating snap ring
Lockwashers are used to prevent loosening of locknuts. When tapered roller bearings or angular contact ball bearings are transition-fitted to shafts, plain washers several mm thick as shown above (at right) should be added and tightened with nut.		End of shaft should have boltholes.	Used when the housing inside is limited, or to simplify shaft machining.

Mounting designs for bearings with tapered bore

Adapter assembly	Withdrawal sleeve	Shaft locknut	Slit ring
The simplest method for axial positioning is just to attach an adapter sleeve to the shaft and tighten the locknuts. To prevent locknut loosening, lockwasher (not more than 180 mm in shaft diameter) or lock plate (not less than 200 mm in shaft diameter) is used.	The locknut (above) or end plate (below) fixes the bearing with a withdrawal sleeve, which makes it easy to dismount the bearing.	The shaft is threaded in the same way as shown in Fig. (a) The bearing is located by tightening locknut.	A split ring with threaded outside diameter is inserted into groove on the tapered shaft. A key is often used to prevent the locknut and split ring from loosening.