| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure capable of suppressing wear of a peripheral fringe part on an outside diameter side of each pocket 7 provided in a cage 2a. SOLUTION: The cage 2a is made of chrome molybdenum steel, and its surface hardness is made Hv600 or more by applying nitriding treatment.δ<SB>1</SB>being amount of roller protrusion is set to be smaller than width dimension W related to the radial direction of a chamfered part 11 of a cylindrical roller 8, and difference betweenδ<SB>2</SB>being amount of negative roller drop and the width dimension W related to the radial direction of the chamfered part 11 is set to be smaller than thickness T of a metallic plate constituting the cage 2a to solve the above-mentioned problem. COPYRIGHT: (C)2007,JPO&INPIT
|
