Kyodo Yushi Co., Ltd.

Lube Corporation

Daming Dong

Terasu Yoshinari

Makoto Hayama

Minoru Namiki

Takayuki Ariyasu

Hiroshi Ozeki

Keiji Nakayama

Satoshi Noyama

The invention provides a lubricating grease composition with a worked penetration of 400 to 500 for a machine tool equipped with an automatic lubricator, containing a base oil having a kinematic viscosity at 40&#xb0; C. of 10 to 200 mm/s and 0.1 to 10 mass % of solid particles insoluble in the base oil. The lubricating grease composition of the invention can be fed using the automatic lubricator attached to the machine tool, and can prevent the stick-slip from occurring on the sliding lubrication portion of the machine tool.

Lubricating grease composition

The invention provides a grease composition for bearings used in wind power generators, containing a base oil which has a kinematic viscosity of 10 to 70 mm/s at 40&#xb0; C. and a pour point of &#x2212;40&#xb0; C. or less, and a diurea compound as a thickener, for example, a diurea compound represented by formula (1) where Rand Rare both C8-alkyl group. The grease composition for bearings used in wind power generators according to the invention can meet the requirements in terms of the seizure life and the pumpability as well as the fatigue life (flaking life). 

Grease composition for bearing of wind power generator

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Fujisawa, Japan

Daming Dong