Bearing retainer of synthetic resin, method of manufacturing the same and rolling bearing
AssigneeKoyo Seiko Co., Ltd.
InventorsKiyoshi Tanimoto, Kunio Yanai
Life of this patent
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Abstract
A bearing retainer of a synthetic resin, which can be injection molded out of a material obtained by mixing at least particles of a heat resisting reins with a thermoplastic resin, and which can thereby be manufactured at a low cost without compromise in suitability for high-rotational-speed and high-temperature applications.
Claims23
A synthetic resin retainer for a bearing for use at high speed and high temperatures which is formed from a material comprising at least a thermoplastic resin and particles of a heat-resisting resin, the thermoplastic resin and the particles of the heat-resisting resin being formed of different materials, wherein said thermoplastic resin is at least on selected from the group consisting of polyether ether ketone (PEEK), polyether ketone (PEEK), polyether sulfone (PES), polyether imide (PEI), polyamideimide (PAI), polyphenylene sulfide (PPS), polyallylether nitrile (PEN) and thermoplastic polyimide resin (TPI).
A method of manufacturing a retainer for a bearing and for use at high speed and high temperature, the method comprising:
- injection molding a synthetic resin material, wherein said material comprises at least a thermoplastic resin and particles of a heat-resisting resin, the thermoplastic resin and the particles of the heat-resisting resin being formed of different materials, and said thermoplastic resin is at least one selected from the, group consisting of polyether ether ketone (PEEK), polyether ketone (PEK), polyether sulfone (PES), polyether imide (PEI), polyamideimide (PAI), polyphenylene sulfide (PPS), polyallylether nitrile (PEN) and thermoplastic polyimide resin (TPI).
A rolling bearing for use at high speed and high temperature, the bearing;
- comprising an inner race, an outer race, a plurality of rolling elements disposed between said races and a retainer for holding Said rolling elements in position, said retainer being of a material comprising at least a thermoplastic resin and particles of a heat-resisting resin, the thermoplastic resin and the particles of the heat-resisting resin being formed of different materials, and said thermoplastic resin is at least one selected from the group consisting of polyether ether, ketone (PEEK), polyether ketone (PEK), polyether sulfone (PES), polyether imide (PEI), polyamideimide (PAI), polyphenylene sulfide (PPS), polyallylether nitrile (PEN) and thermoplastic polyimide resin (TPI).
Dependencies are inferred from the claim text.