Grease composition for metal-resin lubrication
AssigneeMINEBEA MITSUMI Inc.
InventorsDaiki Yamamoto, Yusuke Asai, Motojiro Tsuna
Life of this patent
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Abstract
A grease composition for resin lubrication, the grease composition to be applied to a sliding surface made of resin, the grease composition containing: a fluorine-based base oil (a kinematic viscosity at 40° C. of 300 mm2/s or higher) and a synthetic hydrocarbon oil as base oils; a fluorine-based thickener, and a lithium soap thickener or a lithium complex soap thickener as thickeners; and a fluorine-based surfactant and an extreme pressure additive as additives; and a resin sliding member (slide switch) having a sliding surface made of resin, the sliding surface provided by application with the grease composition.
Claims18
A grease composition for resin lubrication, the grease composition to be applied to a sliding surface made of resin, the grease composition comprising:
- a fluorine-based base oil and a synthetic hydrocarbon oil;
- a fluorine-based thickener, and one of a lithium soap thickener or a lithium complex soap thickener;
- a fluorine-based surfactant, the fluorine-based surfactant is a fluorine-containing phosphate ester blended at 0.5 to 2.5 mass % relative to a total mass of the grease composition for resin lubrication;
- and
- an extreme pressure additive, wherein, the fluorine-based base oil has a kinematic viscosity at 40° C. of 300 mm2/s or higher and the grease composition has a kinetic friction coefficient below 0.060.
Dependencies are inferred from the claim text.