Nok Klueber Co., Ltd.

Nok Kluber Co., Ltd.

Denso Corporation

Wataru Sawaguchi

Toshio Nitta

Akihiko Shimura

Masaki Tahara

Ryousuke Oguri

Yoshihito Tani

Miyuki Hashida

Motoyuki Inai

Akira Shinozaki

Yuta Miyagawa

Kohei Matsumoto

Ayumi Yamazaki, I

A lubricating grease composition containing a base oil having a kinematic viscosity of 10 mm/s or more and 60 mm/s or less at 40&#xb0; C.; a thickener containing at least one soap selected from a metal soap and a metal complex soap; and a solid lubricant containing porous polyamide particles. An amount of the porous polyamide particles blended is 1% by mass or more and 20% by mass or less based on a total mass of the lubricating grease composition.

Lubricating grease composition

A lubricating grease composition includes a base oil, a thickener, and a solid lubricant, wherein the base oil is a synthetic hydrocarbon oil with a kinematic viscosity of 600 to 2000 mm/s at 40&#xb0; C., the thickener is a barium complex soap, and the solid lubricant is an inorganic fine particle with Mohs hardness of 3 to 6 and an average particle size of 10 to 40 &#x3bc;m.

Lubricating grease composition, clutch and power window motor

The present disclosure is related to provide a lubricating grease composition having a high static friction coefficient while maintaining excellent low-temperature torque characteristics, high-temperature shear stability, and high-temperature oil separation characteristics. A lubricating grease composition of the present disclosure contains a base oil, a thickener, and a solid lubricant, wherein the solid lubricant is calcium carbonate, the amount of the calcium carbonate blended is 1 to 60% by weight based on the total weight of the lubricating grease composition, the calcium carbonate has an average particle diameter of 0.1 to 30 &#x3bc;m, the base oil has a kinematic viscosity of 18 to 300 mm/s at 40&#xb0; C., and the lubricating grease composition has a worked penetration of 240 to 320.

A lubricating grease composition for a resin member is used to be supplied as a lubricant on a surface of at least a sliding portion of a resin member including the sliding portion with an other member. The lubricating grease composition for a resin member contains a base oil which is a mixed oil of a poly-&#x3b1;-olefin having a kinetic viscosity at 40&#xb0; C. of 18 to 50 mm/s and an ethylene-&#x3b1;-olefin copolymer having a number average molecular weight of 40,000 to 200,000, a lithium-based complex soap as a thickener and a polytetrafluoroethylene resin as a solid lubricant having a mixing ratio of 4 to 12 mass % to the entire lubricating grease composition, wherein the base oil has a kinetic viscosity at 40&#xb0; C. of 80 to 200 mm/s and a worked penetration of the lubricating grease composition ranges from 265 to 340.

A fluorine-based lubricant composition comprising a base oil and a fluorine-containing compound represented by the general formula:

Fluorine-based lubricant composition

A grease composition, which comprises a base oil selected from at least one of synthetic hydrocarbon oil, ester-based synthetic oil, and ether-based synthetic oil; a thickening agent selected from at least one of lithium-based soap, lithium-based complex soap, and a urea-based compound; polytetrafluoroethylene resin powders having a number average molecular weight Mn of 20,000-100,000; and zinc dialkyldithiophosphate having straight or branched alkyl groups of at least 3 carbon atoms, preferably 5-13 carbon atoms, and more preferably 8-12 carbon atoms, has not only a distinguished lubricability, when applied to plastic members, but also a distinguished durability as given by change in friction coefficient and wear loss, after the sliding test.

Grease composition

A lubricating oil composition for use in oil-impregnated sintered bearings together with a resin member having C&#x2550;C bonds or C&#x2550;O groups in the molecules, which comprises a base oil comprising a synthetic hydrocarbon oil as the main component, and 0.1-30% by weight of an ester-based oil on the basis of total composition, and free from zinc dialkyldithiophosphate and molybdenum dialkyldithiocarbamate, where the synthetic hydrocarbon oil as the main component of the base oil has substantially no adverse effect on resin, can minimize an adverse effect on various metal species of sintered materials by suppressing a mixing amount of a wear inhibitor or an extreme pressure agent to a minimum, without deteriorating a good lubricability required for the lubricating oil in oil-impregnated sintered bearings.

Growing community of inventors

Ibaraki, Japan

Wataru Sawaguchi