| 摘要 |
PROBLEM TO BE SOLVED: To improve a rust proofing property by forming a rust-proof coating of 1-5μm thickness composed of a resin composition including polyaniline, dopant and thermosetting resin, on a zinc-plating layer of shields. SOLUTION: This deep groove ball bearing comprises an inner ring 1, an outer ring 2, a plurality of balls 3 rollably disposed between the inner ring 1 and the outer ring 2, a cage 4 for retaining the plurality of balls 3 between the inner ring 1 and the outer ring 2, and the shields 5, 5 mounted on inner peripheral faces of both end portions of the outer ring 2. A grease composition 6 is filled in a gap portion formed between the inner ring 1 and the outer ring 2 to dispose the balls 3, and is sealed inside of the deep groove ball bearing by the shields 5. The shields 5 are composed of steel plates with zinc plating, and the rust-proof coating of 1-5μm composed of the resin composition including polyaniline, dopant and thermosetting resin, is formed on the zinc plating layer. The total content of polyaniline and dopant is 0.02-10 mass% of the resin composition. COPYRIGHT: (C)2007,JPO&INPIT
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