| 摘要 |
<p>In a roller bearing for endless linear motion, a return hole is provided in which its cross-section is of a composite shape formed by a basic circular hole and a square section concentric thereto. As a result, various advantages such as less resistance to rollers rolling inside said return hole, accurate guiding surfaces for rollers, good lubrication and cooling in said return hole, less wear, low cost manufacturing are achieved.</p> |
