| 摘要 |
PROBLEM TO BE SOLVED: To prevent damage such as abnormal wear from occurring in high speed operation while suppressing an increase in manufacturing costs. SOLUTION: A recessed groove 25 allowing adjacent pockets 15 to communicate with each other is formed in the inner peripheral surface of a cage 23. As shown in an arrowα, lubricating oil is jetted aslant onto the end part outer peripheral surface of an inner ring 12 from a nozzle 24. As shown by an arrowβ, a lubricating oil splashed from the end part outer peripheral surface is taken into an inside space 27 in which balls 13 are installed. A part of the lubricating oil taken into the inside space is collected by the recessed groove 25, and supplied into the pockets 15 through the recessed groove 25. COPYRIGHT: (C)2005,JPO&NCIPI
|
