Anti-friction bearing for heat resistance

Details Anti-friction bearing for heat resistance Anti-friction bearing for heat resistance

1989-07-23

1991-07-02

Hannon, Thomas R.

Bearings

Rotary bearing

Antifriction bearing

384492, 384506, 384905, F16C 1950, F16C 3362

Patent

active

050281500

ABSTRACT:
An anti-friction bearing unit, particularly for use in an exhaust gas turbo charger. The unit includes two anti-friction bearings axially spaced apart from each other on a shaft. High temperature occurs on one end of the shaft. A precise mounting is provided which is not sensitive to high temperatures on at least the axial side exposed to high temperature. The bearing outer ring, which is the ring not subject to high temperatures, consists of one piece. The bearing inner ring is widened and divided into two sections at its axial middle. The axial portion of the divided inner ring which is exposed to high temperature consists of material of high heat resistance. The high heat resistance material is, for example, 80 MoCrV 42 16 (M 50) or X 102 CRMo 17 (AISI 440 C). An additional intermediate ring around the shaft at the high temperature and helps reduce heat transmission.

REFERENCES:
patent: 4226485 (1980-10-01), Pruvot
patent: 4573809 (1986-03-01), Jacob
patent: 4728838 (1988-03-01), Mandel et al.

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