Bearing assembly

摘要

A bearing assembly includes two tapered roller bearings having inner and outer rings and tapered rollers therebetween. The inner rings are mounted to a first machine part, and the outer rings are mounted on an adapter sleeve on a second machine part. The adapter sleeve has a first end axially fixed relative to the second machine part and a second end axially spaced from an axial stop of the second machine part by an axial gap. At a non-operating temperature, such as 20° C., the gap has a width of about 30 μm to 250 μm, and at an operating temperature of over 50° C. the gap disappears and the second end contacts the axial stop. The width of the gap at the non-operating temperature is selected to produce a predetermined preload on the bearing assembly at the operating temperature.

主权项

1. A bearing assembly, comprising two tapered roller bearings, each including an inner ring, an outer ring, and tapered rollers disposed between the inner rings and the outer rings, wherein the inner rings are mounted in or on a first machine part and wherein the outer rings are mounted in or on a second machine part, wherein the inner rings or the outer rings include cylindrical counter-seats disposed on a cylindrical seat of an adapter sleeve supporting the rings, wherein the one bearing ring disposed on the adapter sleeve abuts directly or indirectly on an axial stop of the first or second machine part, wherein the other bearing ring disposed on the adapter sleeve abuts on an axial stop of the adapter sleeve, wherein the axial stop of the adapter sleeve is formed by a radially enlarged or reduced section of the adapter sleeve, wherein the section has an end surface on the side facing away from the bearing ring, which end surface lies opposite an axial stop on the first or second machine part,wherein
at room temperature of 20° C. a gap is present, measured in the direction of the axis, between the end surface of the section and the axial stop on the first or second machine part, which gap is between 30 μm and 250 μm, wherein at an increased operating temperature of the bearing assembly of greater than 50° C. the gap provided between the end surface of the section and the axial stop is reduced to zero by the heat-induced expansion of the bearing assembly.