Method for forming a crankshaft bearing having hydrodynamic thrust flanges

  • US 5,363,557 A
  • Filed: 01/13/1994
  • Issued: 11/15/1994
  • Est. Priority Date: 12/19/1991
  • Status: Expired due to Term
First Claim
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1. A method of forming a half bearing for an engine crankshaft, said half bearing comprising a semi-cylindrical wall and a radially-extending semi-cylindrical thrust flange comprising a steel backing and a relatively soft anti-friction material, said flange being located on an axial end portion of said wall, wherein said method comprises forming an oil supply groove in said relatively soft anti-friction material with a first machine operation and forming a hydrodynamic contour on said relatively soft anti-friction material adjacent said oil supply groove with a second machine operation which comprises a metal deformation operation which deforms said relatively soft anti-friction material laterally toward said oil supply groove.

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