Device for mounting annular body

Details Device for mounting annular body Device for mounting annular body

1992-03-06

1993-03-30

Hannon, Thomas R.

Bearings

Rotary bearing

Antifriction bearing

384585, F16C 1915, F16C 4304

Patent

active

051978083

ABSTRACT:
A mounting is provided to allow an applied load to be transmitted effectively by preventing an annular body of a bearing from being broken by a change in the temperature while the bearing is used if the linear expansion coefficient of the annular body and that of a mating member are different from each other. In a cylindrical roller bearing, having a ceramic inner ring (an annular body) 20 mounted onto a steel shaft (a mating member) 10, cylindrical portions 40b of a pair of spacers 40 are fitted onto an outer peripheral surface of the inner ring 20, the spacers 40 being firmly fitted onto the shaft 10. Each spacer 40 is made from a spring steel and is not only thin but also provided with a lightening portion 41 on its cylindrical portion 40, so that the spacers 40 support the inner ring 20 with respect to the shaft 10 elastically in the radical direction. Thermal stress and an increment of the interference caused on fitting surfaces 23, 43 of the inner ring 20 and the spacers 40, respectively, by a change in the temperature during the operation of the bearing are alleviated and absorbed by the elastic deformation of the cylindrical portions 40b of the spacers 40. As a result, a load applied to the inner ring 20 is transmitted to the shaft 10 through the spacers 40 without damaging the inner ring 20.

REFERENCES:
patent: 4895462 (1990-01-01), Takata
patent: 4968158 (1990-11-01), Atkinson et al.

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