| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling device with a long life, which has a superior seizure-resistant property and wear-resistant property. SOLUTION: A deep groove ball bearing comprises an inner ring 1 having a raceway surface 1a on an outer periphery, an outer ring 2 having a raceway surface 2a opposing to the raceway surface 1a on an inner periphery, a plurality of rolling bodies 3 rotatably arranged between both the raceway surfaces 1a and 2a, a retainer 4 retaining a plurality of rolling bodies 3 between the inner ring 1 and outer ring 2, and sealing units 5 and 5 such as a seal for covering an opening of a gap between the inner ring 1 and outer ring 2. A grease composite G for lubricating the deep groove ball bearing is enclosed in a space in which the rolling bodies 3 are internally arranged between the inner ring 1 and outer ring 2. The grease composite G includes hydrophilic silica and metal soap. COPYRIGHT: (C)2006,JPO&NCIPI |
