| 摘要 |
A bearing structure is provided to support and fix the ball stably even when an external force is applied in the axial direction. A bearing structure comprises an inner race(100) in which a recess(110) of specific width and diameter is formed, an outer race(200) in which a recess(210) is formed on surface corresponding to the recess of the inner race, a ball(300) whose both ends are inserted in the recesses of the inner and outer races, a retainer(40) in which narrow grooves having a curvature corresponding to the ball are formed on both sides, and a cover(50) which is inserted in combining grooves(120,220) formed on the inner and outer races. Supporting protrusions(130,230) are formed in the recesses of the inner and outer races, and inserted in support grooves(310) formed on both sides of the ball. |
