| 摘要 |
PROBLEM TO BE SOLVED: To keep satisfactory incorporating performance even when the blending amount of glass fiber is 20 wt.% or more. SOLUTION: This cage 1 is composed of: a small diameter-side annular portion 2; a large diameter-side annular portion 3; pole portions 4 connecting both annular portions 2, 3; and a pocket portion 5 of tapered rollers formed by an inner face of the small diameter-side annular portion 2, an inner face of the large diameter-side annular portion 3 and inner faces of two pole portions 4, 4. An approximately circular arc-shaped recessed portion 10 is formed between the pole portions 4, 4 on an outer diameter face of the small diameter-side annular portion 2. The approximately circular arc-shaped recessed portion 10 is formed by a R-shaped cutout formed on the outer diameter face of the small diameter-side annular portion 2 expanded by elastic deformation in the circumferential direction in being incorporated. COPYRIGHT: (C)2007,JPO&INPIT
|
