| US 7,500,311 B2 | ||
| Method of lubricating roller bearing | ||
| Toshiaki Shimomura, Nara (Japan) | ||
| Assigned to Jtekt Corporation, Chuo-ku, Osaka (Japan) | ||
| Filed on Apr. 23, 2004, as Appl. No. 10/829,990. | ||
| Claims priority of application No. P. 2003-122480 (JP), filed on Apr. 25, 2003. | ||
| Prior Publication US 2004/0213494 A1, Oct. 28, 2004 | ||
| Int. Cl. F16C 19/00 (2006.01) | ||
| U.S. Cl. 29—898.1 [29/407.05; 184/7.4; 384/462] | 10 Claims |
| 1. A method of lubricating a bearing device including an inner ring member through which a shaft is passed and which is supported
rotatably about an axis of the shaft and includes an inner ring raceway surface, an outer ring member arranged concentrically
with the inner ring member and including an outer ring raceway surface, a plurality of rollers arranged rollably between the
inner ring raceway surface and the outer ring raceway surface, and first and second lubricating paths through which lubricant
is supplied to at least one of the inner ring raceway surface and the outer ring raceway surface, the method comprising:
detecting a rotating speed of the inner ring member about the axis;
supplying the lubricant to at least one of the first and second lubricating paths according to the detected rotating speed
of the inner ring member; and
controlling a supply of the lubricant to the first and second lubricating paths using a changeover valve,
wherein the lubricant is supplied to the first lubricating path when the rotating speed of the inner ring member is no more
than a predetermined speed, and
wherein the lubricant is supplied to the first and second lubricating paths when the rotating speed of the inner ring member
is higher than the predetermined speed.
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