Patent ID: 6478468
Filing Date: 2002-11-12
Classification: F16C,Y10S

Abstract:
A plain bearing for dry operation, the bearing comprising a metal backing, a layer of a porous matrix of sintered metal on the backing and a filled PTFE infiltrated into the interstices of the sintered layer and standing proud of the sintered layer, and characterised in that the PTFE contains filler material selected from the group consisting of: (1) 1 to 20% by volume fibrillated aramid fibers and 10 to 30% by volume glass, (2) 1 to 20% by volume fibrillated aramid fibers, 10 to 30% by volume of glass, and ferric oxide, (3) 1 to 20% by volume fibrillated aramid fibers, 10 to 30% by volume of glass, and carbon, and (4) 1 to 20% by volume fibrillated aramid fibers, 10 to 30% by volume of glass, ferric oxide, and carbon; wherein additional fillers other than fibrillated aramid fibers, glass, ferric oxide and carbon are excluded from the PTFE.