| 摘要 |
An enclosed ball bearing is disclosed to include a bearing, which defines a holding space sealed in between the outer race and inner race thereof by seal members and which has balls mounted in the holding space and supported between the outer race and the inner race for relative rotation between the outer race and the inner and a through hole extended through the periphery of the outer race in communication with the holding space, and a socket mounted on the outer side of the bearing and defining with the bearing an enclosed lubricant space that accommodates a lubricant that is movable through the through hole into the holding space of the bearing to lubricate the balls.
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