Kyodo Yushi Co., Ltd.

Honda Motor Co., Ltd.

Ntn Corporation

Jtekt Corporation

Oiles Corporation

Daisuke Tsutsui

Junichi Imai

Yuta Sato

Satoshi Yamazaki

Shinsuke Hirano

Ryuji Nakata

Mitsuhiro Kakizaki

Morinobu Kawamura

Shuichi Yamaguchi

Miwa Hokii

Yoshiyuki Nagasawa

Osamu Nakamura

Hiroyuki Yoshida

Tsubasa Ishizeki

Kota Sasaki

A grease composition includes a urea-based thickener; a synthetic hydrocarbon oil and/or a mineral oil as a base oil, a kinematic viscosity of the base oil at 100° C. being 4 to 40 mm/s; and 1 to 10% by mass of a montan wax, 1 to 5% by mass of a molybdenum-based extreme pressure agent, and 1 to 5% by mass of a sulfonate-based compound as additives, and the grease composition has a consistency of 310 to 430. The grease composition is for use in lubrication between a metal member and a metal member and lubrication between a metal member and a resin member.

Grease composition and rack-and-pinion-type steering device filled with the same grease composition

The invention provides a grease composition for a speed reducer part of an on-vehicle electric component, the grease composition containing a base oil and a thickener, wherein

Grease composition for speed reducer part of on-vehicle electric component

Provided is a grease composition for a wheel bearing, containing (a) a base oil consisting of a mineral oil and a synthetic hydrocarbon oil, wherein the ratio of the synthetic hydrocarbon oil to the total amount of the mineral oil and the synthetic hydrocarbon oil is 40 to 60 mass %, and the base oil has a kinematic viscosity at 40&#xb0; C. of 40 to 65 mm/s; (b) a thickener of formula (A) wherein Ris diphenylmethane, and Rand R, which may be the same or different from each other, each represent cyclohexyl group or a straight-chain or branched alkyl group having 16 to 20 carbon atoms, with a molar ratio of the cyclohexyl group to the total number of moles of the cyclohexyl group and the alkyl group being 50 to 90 mol %; (c) an amine type antioxidant; and (d) an amine phosphate type antiwear agent. 

Grease composition and grease-filled wheel bearing

The invention provides a grease composition for hub unit bearing, having (a) as a base oil a mixture of a hydrocarbon synthetic oil and an ester type synthetic oil, with the content of the ester type synthetic oil being 20 to 50 parts by mass with respect to 100 parts by mass of the total of the hydrocarbon synthetic oil and the ester type synthetic oil, and the base oil having a kinematic viscosity at 40&#xb0; C. of 20 to 80 mm/s, and (b) as a thickener a urea compound.

Grease composition for hub unit bearing

A lubricant composition, which is low in friction, does not have an attacking property against polyamide resin, etc., is excellent in heat resistance, and especially does not undergo deterioration or loss of the respective characteristics in a short term when used under a high temperature environment, is provided along with a speed reduction gear and an electric power steering apparatus that use the lubricant composition. The lubricant composition has blended therein a synthetic hydrocarbon oil, a urea thickener, zinc stearate, and a sulfur-based antioxidant. A speed reduction gear has a portion of engagement of a small gear and a large gear filled with the lubricant composition. In an electric power steering apparatus, an output of a steering assisting electric motor is speed reduced and transmitted to a steering mechanism via the speed reduction gear.

Lubricant composition, speed reduction gear, and electric power steering apparatus

Growing community of inventors

Yokohama, Japan

Daisuke Tsutsui