Mechanism for pre-loading bearings

Details Mechanism for pre-loading bearings Mechanism for pre-loading bearings

F - Mech Eng,Light,Heat,Weapons

16

C

308/1.6

F16C 32/06 (2006.01) B23Q 1/26 (2006.01) F16C 25/06 (2006.01)

Patent

CA 1255727

Abstract Apparatus is provided for mounting a rotat- able member such as a machine tool spindle within a bore provided in a housing, the rotatable member being journaled in a number of bearings. A bearing support sleeve disposed within the bore to support the bearings includes a first portion tightly fitted in the bore, a second portion slip-fitted in the bore and positioned to apply a pre-load force to the bear- ings, and a yieldable member joining the first and second portions. The pressure in a fluid system associated with the yieldable member is increased to deform the yieldable member and to thereby urge the second portion axially to apply a pre-load force to the bearings which corresponds to the pressure increase.

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