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US 6,390,682 B1Granted
Plain bearing
AssigneeGlacier Garlock Bearings, Inc.
InventorsKenneth Macleod McMeekin, Janette Johnston
Life of this patent
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AssigneeGlacier Garlock Bearings, Inc.
InventorsKenneth Macleod McMeekin, Janette Johnston
Estimating the term…
A plain bearing comprises a metallic backing, a sintered porous metal layer bonded to the backing and a lining layer infiltrated into the pores of the porous metal layer and overlying the sintered metal layer, said lining layer comprising PTFE containing 10-30% by vol. of particulate wear-resistant filler, 2-10% by vol. fibrillated aramid fibers and 2-10% by vol. of a melt processable fluoropolymer. The melt processable fluoropolymer is a copolymer of the group tetrafluoroethylene-hexafluoropropylene, tetrafluoroethylene-perfluoroalkylvinylether and monofluoroalkoxy. Such a bearing exhibits superior cavitation erosion resistance and may, by increasing the temperature and/or duration of the sintering operation that is normally performed after the mixture of ingredients has been applied to a backing material, be made to exhibit significantly improved fatigue strength.
A plain bearing comprising a metallic backing, a sintered porous metal layer bonded to the backing and a lining layer infiltrated into the pores of the porous metal layer and overlying the sintered metal layer, said lining layer comprising PTFE containing 10% to 30% by volume particulate wear-resistant filler, 2% to 10% by volume fibrillated aramid fibres, and 2% to 10% by volume of a melt processable fluoropolymer.
A method of manufacturing a plain bearing, the method comprising the steps of:
Dependencies are inferred from the claim text.