Rolling-element bearing unit

Abstract

The invention relates to a rolling-element bearing unit (1) for rail vehicles, comprising an inner bearing ring (4), an outer bearing ring (5), rolling elements (6) arranged between said bearing rings(4, 5), and at least one retainer element (2), said inner bearing ring (4) and the retainer element (2) being arranged on an axle (7), and the retainer element (2) being arranged radially between anaxial end of the inner bearing ring (4) and the axle (7), and radially between a contact part (9, 19) that lies against the end face (12, 18) of the inner bearing ring (4), and the axle (7), wherein at least one sealing element (14) is secured to the retainer element (2).

Description

technical field [0001] The invention relates to a rolling bearing unit for a rail vehicle according to the preamble of claim 1 . Background technique [0002] A rolling bearing unit for a rail vehicle generally comprises a rolling bearing with an inner bearing ring, an outer bearing ring and rolling elements located therebetween, wherein the rolling bearing is applied to the end of the wheel set shaft. An end cover is arranged on the end face of the wheel axle, which completely surrounds the end face of the wheel axle. The end cap bears against the end face of the bearing inner ring of the rolling bearing. A support ring is likewise arranged directly in contact with the other end face of the bearing inner ring. [0003] However, the wheel shaft is subjected to high rotational bending loads during operation, so that gaps are formed between the bearing inner ring and the support ring and between the bearing inner ring and the end caps, which close once per revolution and are...

AI Technical Summary

Problems solved by technology

Fluid that accumulates there can cause corrosion to the shaft

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