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Roller bearing backing ring assembly

A technology for bearing components, backing rings, applied in the field of roller bearings, which can solve the problems of accelerated bearing component and journal wear, shaft or bearing failure, etc.

Inactive Publication Date: 2012-08-01
AMSTED RAIL CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Loose backing rings accelerate wear on bearing assemblies and journals, potentially leading to shaft or bearing failure

Method used

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  • Roller bearing backing ring assembly
  • Roller bearing backing ring assembly
  • Roller bearing backing ring assembly

Examples

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Embodiment Construction

[0016] refer to figure 1 , shows one embodiment of a grommet assembly. In this embodiment, bearing assembly 10 is a tapered roller bearing of the type often used to support railcar wheels on axles in railroad applications.

[0017] Bearing assembly 10 is typically pre-assembled prior to installation on railcar axle 14 . At each free end of the axle 14, the journal 12 terminates in a slightly conical section 15 to facilitate mounting the bearing assembly 10 thereon. Bearing assembly 10 is pressed against journal 12 of axle 14 to form an interference fit.

[0018] A dust shield 18 having a larger diameter than the journal 12 is positioned axially inward from the journal 12 . Axially inwardly from dust shield 18, shaft 14 extends to its largest diameter. The weight of the railcar is transferred to the axle through the bearing assembly 10 and further to the rails through railcar wheels (not shown) fitted inside the dust shields on the axle.

[0019] Some bearing assemblies 10...

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PUM

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Abstract

A novel assembly for a railcar axle bearing is presented. The assembly includes a backing ring affixed to the fillet of the journal of an axle and a locking ring for further affixing the backing ring the journal. The locking ring has an inboard end affixed to the dust guard of the axle and an outboard end for engaging the backing ring.

Description

technical field [0001] This invention relates to roller bearings, and more particularly to tapered roller bearings mounted on railway wagon axles. Background technique [0002] Tapered roller bearings on railcar axles support working loads that can produce significant flexural deflection in the axle and particularly in the end portion of the axle, which includes the journal to which the tapered roller bearing is secured . The stresses imposed by the working loads are particularly high in the journal portion of the shaft at or near the backing ring. [0003] Due to shaft deflection, the backing ring and journal are often subject to fretting wear as the backing ring moves relative to the journal. Fretting wear may be sufficient to loosen the backing ring, increasing the axial play of the bearing on the journal. Loose backing rings accelerate wear on bearing assemblies and journals, potentially leading to shaft or bearing failure. [0004] The grommet design is a one-piece ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C35/063B60B35/00
CPCF16C19/386B61F15/12B61F15/22F16C2326/10F16C2361/31F16C35/063
Inventor P·A·哈伯德M·梅森
Owner AMSTED RAIL CO INC
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