| 摘要 |
A linear bearing includes a casing which has multiple slots defined axially through a wall thereof and rollers are engaged with the slots. Two grooves are radially defined in the outer surface of the casing and located close to two ends of the casing. The grooves communicate with the slots. Two collars are engaged with the grooves so as to prevent the rollers from disengaging from the slots. Each slot includes guide grooves defined in two insides thereof so that the two axles on two ends of each roller are engaged with the guide grooves.
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