| 摘要 |
PROBLEM TO BE SOLVED: To provide a ball bearing improved in service life thereof by improving flowing ability of grease to make a larger quantity of grease work for lubrication. SOLUTION: This ball bearing 10 has an inner ring 12, an outer ring 11, a holder 15 arranged between both the inner and outer rings, a plurality of balls 13 held by the holder 15, and an annular seal member 16 provided in both sides of the ball 13 in the axial direction, and this ball bearing 10 is lubricated by grease. Oil repellency is given to any one of surfaces of these members surrounding a bearing space. COPYRIGHT: (C)2003,JPO
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