| 摘要 |
PROBLEM TO BE SOLVED: To provide a bearing for an electronic control motor of an automobile, which has: excellent seizure-resistance even in a high-temperature environment above 180°C; low torque in a wide temperature range from a low temperature to a high temperature; and excellent torque stabilizing performance. SOLUTION: A deep-slot ball bearing includes: an inner ring 1 having a raceway surface 1a on the outer peripheral surface; an outer ring 2 having a raceway surface 2a opposite to the raceway surface 1a on the inner peripheral surface; and a plurality of rolling elements 3 disposed to freely roll between both raceway surfaces 1a, 2a. A grease G for lubricating between both raceway surfaces 1a, 2a and the rolling elements 3 is enclosed in a void part formed between the inner ring 1 and the outer ring 2, in which the rolling elements 3 are disposed. The grease G contains perfluoropolyether oil, fluororesin, and fine particles having a specific surface area of 50 m<SP>2</SP>/g or more according to BET method. COPYRIGHT: (C)2008,JPO&INPIT
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