| 摘要 |
PURPOSE:To reduce extremely the torsion resistance under the action of a load by a method wherein a bearing race is formed with a semicircular arc body. CONSTITUTION:A bearing main body 1 comprises a block body with grooved cross-section. A nearly rectangular-shaped hollow recessed part 2 is provided at the central lower part of the bearing main body. Also, skirt parts 3, 4 are provided in interposing manner between the both right and left sides of the hollow recessed part 2. Semicircular race holding grooves 5, 6 are provided symmetrically in right and left at the internal side of the skirt parts 3, 4. A pair of right and left bearing races 11, 12 formed in semicircular arc body is fitted in the holding grooves. No-load ball grooves 7-10 having nearly identical curvature with approx. the ball diameter are provided in the vicinity of the both ends of the race holding grooves 5, 6 in axial direction through full length of the bearing main body 1. |
