Radial roller bearing

Patent metadata

Field	Value
Publication number	US-9074632-B2
Application number	US-201214009267-A
Country	US
Kind code	B2
Filing date	Feb 3, 2012
Priority date	Apr 15, 2011
Publication date	Jul 7, 2015
Grant date	Jul 7, 2015

Abstract

A radial roller bearing comprises a smooth cylindrical outer ring inserted in a housing with a roller race arranged in the outer ring. The roller race is formed by a plurality of roller-shaped rolling elements inserted in a bearing cage, which holds said rolling elements evenly spaced in a circumferential direction. The rolling elements roll off an outer raceway formed by the inner shell surface of the outer ring, and off an inner raceway formed by the outer shell surface of a shaft to be mounted, or formed by a smooth cylindrical inner ring fitted onto the shaft. The axial guidance of the roller race is accomplished by way of two separate flanged rings abutting the axial sides of the outer ring which, together with the outer ring are axially fixed in place by way of safety elements engaging with circumferential grooves in the housing. The safety elements for the flanged rings and the outer ring, and the flanged rings are fixedly connected.

First claim

The invention claimed is:

1. A radial roller bearing, comprising:
a smooth cylindrical outer ring inserted into a housing with a roller crown ring arranged in said outer ring, said roller crown ring comprising a plurality of roller-shaped rolling elements inserted and retained into a bearing cage uniformly spaced in a peripheral direction, wherein said rolling elements roll on an outer raceway formed by the inner peripheral surface of the outer ring and on an inner raceway formed by the outer peripheral surface of a shaft or on a smooth cylindrical inner ring carried by the shaft, and
axial guidance of the roller crown ring is effected through two separate flanged disks which bear against the axial sides of the outer ring, said flanged disks being fixed in an axial direction together with the outer ring by fixing elements engaging circumferential grooves provided in the housing, such that the fixing elements for the flanged disks and the outer ring, and the flanged disks are fixedly connected,
wherein the fixing elements are formed by two spring rings of elliptical shape that are smaller on their transverse axes and larger on their longitudinal axes than the diameter of the flanged disks, said spring rings being fixed with their smaller diameter regions on the outer sides of the flanged disks and configured to yield elastically inwards in their larger diameter regions.

2. A radial roller bearing according to claim 1 , wherein the fixing elements are fixed on the outer sides of the flanged disks by welding, soldering or gluing.

3. A radial roller bearing according to claim 1 , which is a cylindrical roller bearing.

4. A radial roller bearing according to claim 1 , which is a needle roller bearing.

5. A radial roller bearing according to claim 1 , wherein the fixing elements are fixed on the outer sides of the flanged disks by positive engagement through stampings that are coped out of the flanged disks and surround the fixing elements.

Assignees

• Aust Jan-Rene
• SCHäFERS HEINZ
• Schaeffler Technologies Ag

Inventors

• Aust Jan-Rene
• SCHäFERS HEINZ

Classifications

• F16C33/605 Primary

  with a separate retaining member, e.g. flange, shoulder, guide ring, secured to a race ring, adjacent to the race surface, so as to abut the end of the rolling elements, e.g. rollers, or the cage · CPC title

• F16C35/067

  Fixing them in a housing (with interposition of an element F16C35/07) · CPC title

• F16C35/063

  Fixing them on the shaft (with interposition of an element F16C35/07) · CPC title

• F16C19/26

  with a single row of rollers · CPC title

• F16C2226/74

  with snap-fit, e.g. by clips · CPC title