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US 6,329,326 B1Granted
Rolling bearing
AssigneeNsk Ltd.
InventorsKenichi Iso, Atsushi Yokouchi, Hideki Koizumi, Kenji Okuma, Yasuhiro Hirayama
Life of this patent
Estimating the term…
Abstract
A rolling bearing has a grease filled therein. The grease contains a perfluoropolyether oil having a straight-chain structure having a dynamic viscosity of from 40 to 160 mm2/s, preferably from 40 to 100 mm2/s, at 40° C. as a base oil and a particulate fluororesin as a base oil, and a particulate polytetrafluoroethylene as a thickening agent.
Claims8
A ball bearing comprising:
- an outer ring having an outer ring groove formed on an inner periphery thereon;
- an inner ring having an inner ring groove formed on an outer periphery thereon;
- a plurality of rolling elements disposed between said outer ring groove and said inner ring groove;
- and
- a grease filled in a space formed between the inner periphery of said outer ring and the outer periphery of said inner ring;
- wherein said grease comprising a perfluoropolyether oil having a straight-chain structure having a dynamic viscosity of from 40 to 160 mm2/s at 40° C. as a base oil and a particulate fluororesin as a thickening agent, and said ball bearing is used for a fuel jet controlling apparatus in an automotive vehicle.
3 more elements
Dependencies are inferred from the claim text.