| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a low dust-rising grease composition that has excellent balance between low dust-rising properties, low rolling properties and low fretting properties, attains the reduction in the maintenance cost, as the lubrication period can be prolonged, and is suitably usable in clean environments, and provide low dust-rising bearings that are enclosed with this grease composition, can be suitably used in clean environments, for example, the installations for semiconductor production, liquid crystal production, computer rooms, and the like. SOLUTION: Mineral oil and/or synthetic lubricant base oil are mixed with one or two or more kinds of compounds selected from (A) lithium stearate soap as a thickener and (B) oxidized paraffins and diphenyl hydrogen phosphite respectively in specific amounts to give the objective grease composition with a mixed thickness of 270-350. This grease composition is enclosed in bearing parts or units, for example, linear guides, ball screws, rolling bearing units.</p> |
