Journal bearing for universal joints and method for producing a journal bearing

Patent metadata

Field	Value
Publication number	US-2016160912-A1
Application number	US-201514957990-A
Country	US
Kind code	A1
Filing date	Dec 3, 2015
Priority date	Dec 3, 2014
Publication date	Jun 9, 2016
Grant date	—

Abstract

A journal bearing for universal joints, including a universal joint sleeve, roller-like rolling bodies, and a thrust washer is provided. A method for producing a journal bearing is also provided.

First claim

1 . A journal bearing for universal joints, comprising: a universal joint sleeve, rolling bodies, and a thrust washer,
the universal joint sleeve includes a base, a hollow cylindrical base body adjacent to the base, an edge, and an opening, the edge is formed from steel in one piece with the base body and extends from the base body in a radial direction inward at an angle to an axis of symmetry of the base body such that the opening bordered on a circumferential side by the edge has an opening cross section with an opening diameter (D) that is smaller than an inner diameter (d 1 ) of the base body, the rolling bodies are distributed on the circumferential side on an inside on the base body on a roller raceway, the thrust washer is arranged axially between the base and the rolling bodies and has an external cylindrical shape, as well as an outer diameter (d 2 ) that is larger than the opening diameter (D), and the base body and the edge together have a hardened surface on an inside and an outside of the universal joint sleeve on a surface of the base body and the edge, and the thrust washer has an elastic construction with a shape that is deformable elastically to a cross section that is equal to or less than the opening cross section defined by the opening diameter (D).

2 . The journal bearing according to claim 1 , wherein at least the surface has, at least on the roller raceway, a surface hardness of at least 700 HV1.

3 . A method for producing a journal bearing according to claim 1 , comprising: forming the universal joint sleeve by shaping a cup-shaped sleeve that has a hollow cylindrical base body, a base, and a hollow cylindrical extension of the base body,
generating the edge with the opening cross section of the universal joint sleeve by turning over the extension, finishing the universal joint sleeve, including the edge, by hardening, and installing the journal bearing after the hardening, including elastically deforming the thrust washer until this fits through the opening cross section, and then inserting the thrust washer through the opening cross section into the universal joint sleeve and then inserting the rolling bodies into the universal joint sleeve.

4 . The method according to claim 3 , wherein the hardening comprises a case-hardening.

Assignees

• Schaeffler Technologies Ag

Inventors

• Lachnit Sven

Classifications

• F16C33/6603

  with grease as lubricant · CPC title

• F16C2202/04

  Hardness · CPC title

• F16C43/00

  Assembling bearings · CPC title

• C21D1/06

  Surface hardening · CPC title

• F16C2204/62

  Low carbon steel, i.e. carbon content below 0.4 wt% · CPC title