| abstract |
The present invention provides a grease composition for a hub unit bearing using an angular ball bearing that has less grease leakage, excellent peeling resistance, and excellent bearing lubrication life. (A) A thickener which is a diurea mixture represented by the following formulas (I) to (III). (I): R 1 —NHCONH—R 2 —NHCONH—R 1 (II): R 1 —NHCONH—R 2 —NHCONH—R 3 (III): R 3 —NHCONH—R 2 —NHCONH—R 3 (R 1 = cyclohexyl group, R 2 = C 6-15 divalent aromatic hydrocarbon group, R 3 = C 12-20 linear or branched alkyl group, {R 1 / (R 1 + R 3 ) } X 100 = 85-95 mol%) (B) base oil, A grease composition for a hub unit bearing using an angular ball bearing containing (c) molybdenum dialkyldithiocarbamate and (d) calcium sulfonate. [Selection figure] None |