| 摘要 |
<p>A double-split cage includes a strip-shaped metallic sheet 20 curved into a semi-cylindrical shape and having several pockets 2 for accommodating a single row of rollers 3 arranged in the circumferential direction. The strip-shaped metallic sheet 20 has two arch portions 4a, 4b separately arranged in the axial direction and includes pillar portions 5 arranged at several positions of both arch portions 4a,4b in the circumferential direction. Both arch portions 4a,4b have protrusions 8a, 8b, 9a, 9b protruding from the pillar portions 5 at both end portions in the circumferential direction, and a forward end portion of each protrusion 8a, 8b, 9a, 9b is chamfered at a corner outside in the axial direction. Length of the chamfered portion in the circumferential direction is larger than the protruding length of each protrusion 8a, 8b, 9a, 9b. The inclination angle of the chamfered portion with respect to the circumferential direction is set between 30-60 degrees. A central arch portion (4c, fig 9) is preferably interposed between arch portions 4a and 4b.</p> |
