Lubricating oil composition for use with sintered porous bearings
AssigneeKabushiki Kaisha Sankyo Seiki Seisakusho
InventorsHisaya Nakagawa, Michiaki Takizawa, Teruhiko Ohtaki, Katsumi Nagano, Masuhiro Onoyama, Tetsuo Ichimaru
Life of this patent
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Abstract
Lubricating oil composition for use with sintered porous bearings includes a poly-.alpha.-olefin hydride or ethylene-.alpha.-olefin copolymer hydride containing base oil to which at least one additive selected from the group consisting of zinc dialkyl dithiophosphate, molybdenum dialkyl dithiocarbide, molybdenum dialkyl dithiophosphate and a sulfur-phosphorus containing extreme pressure additive is added in an amount of 0.01 to 5 parts by weight per 100 parts by weight of the base oil.
Claims18
A lubricating oil composition for use with sintered porous bearings comprising:
- a base oil containing one of a poly-.alpha.-olefin hydride and ethylene-.alpha.-olefin copolymer hydride polyethylene;
- and
- at least one additive selected from the group consisting of zinc dialkyl dithiophosphate, molybdenum dialkyl dithiocarbide, molybdenum dialkyl dithiophosphate and a sulfur-phosphorous containing extreme pressure additive added in an amount of 0.01 to 5 parts by weight per 100 parts by weight of the base oil.
A lubricating oil for use with bearing assemblies that use a sintered porous bearing comprising:
- a base oil containing poly-.alpha.-olefin hydride or ethylene-.alpha.-olefin copolymer hydride,
- wherein a polyethylene is added to the base oil in an amount of 0.5 to 10 parts by weight per 100 parts by weight of the base oil.
A sintered porous bearing containing a lubricating oil composition, wherein the lubricating oil composition comprises:
- a base oil containing one of a poly-.alpha.-olefin hydride and ethylene-.alpha.-olefin copolymer hydride;
- polyethylene;
- and
- at least one additive selected from the group consisting of zinc dialkyl dithiophosphate, molybdenum dialkyl dithiocarbide, molybdenum dialkyldithiophosphate and a sulfur-phosphorous containing extreme pressure additive added in an amount of 0.01 to 5 parts by weight per 100 parts by weight of the base oil.
Dependencies are inferred from the claim text.