US 5,028,150 A · Anti-friction bearing for heat resistance

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.

Claims10

Dependent claims

An anti-friction bearing means for use in a heated environment comprising:

a shaft;
first and second anti-friction bearings axially spaced apart from each other along the shaft;
the shaft being arranged so that high temperatures occur toward one axial end of the shaft;
the anti-friction bearings having an outer ring, of a single piece extending around the first and second bearings;
the bearing means having an inner ring comprised of first and second axially neighboring sections, the first inner ring section being toward the high temperature end of the shaft and the first inner ring section being comprised of material of high heat resistance than the second section of the inner ring.

2 more elements

Dependencies are inferred from the claim text.

Anti-friction bearing for heat resistance

Life of this patent

Anti-friction bearing for heat resistance

Life of this patent

Abstract

Claims10