Kyodo Yushi Co., Ltd.

Nsk Corporation

Jtekt Corporation

Denso Corpora Tion

Kazuki Isa

Yutaka Imai

Masashi Tobayama

Kyoji Inukai

Shozo Ikejima

Iwaki Hirooka

Kazunori Miyake

Shota Akimoto

Suguru Sugawara

Ryosuke Ichimura

Michitaka Yoshihara

Masayuki Murakami

Hiromasa Tanaka

Masatoshi Ijima

Toshizo Watanabe

Yusuke Asada

Yuki Takeyama

Kanako Niiya

Kaname Nishi

Takahiro Maeda

Koki Ando

A grease composition for vehicular hub unit bearings is provided, in which a base oil is a synthetic hydrocarbon oil having a kinematic viscosity at 40° C. of 25-50 mm/s, a thickener is an alicyclic aliphatic diurea compound, based on a total mass of the composition, 0.1-5% by mass of a carboxylic acid-based corrosion inhibitor, 0.1-5% by mass of a carboxylic acid salt-based corrosion inhibitor, and 0.1-3% by mass of an amine salt of a fatty acid are contained, and a worked penetration is 220-270.

Grease composition for vehicular hub unit bearings

The present invention relates to a grease composition including: a base oil; a thickener; a rust inhibitor; and an extreme pressure agent, in which the rust inhibitor includes, with respect to a total mass of the grease composition: 0.10 mass % to 10.00 mass % of a calcium sulfonate; 0.20 mass % to 10.00 mass % of a zinc sulfonate; and 0.10 mass % to 10.00 mass % of a zinc carboxylate, and the extreme pressure agent includes, with respect to the total mass of the grease composition, 2.00 mass % to 14.00 mass % of a zinc dialkyldithiophosphate.

Grease composition and rolling bearing

Provided is a grease composition for a magnet clutch of an automobile, including: a base oil; and a thickener, wherein the composition contains 5% by mass or more of a sulfur content in terms of sulfur element relative to a total mass of the composition.

Grease composition

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Fujisawa, Japan

Kazuki Isa