| 摘要 |
PROBLEM TO BE SOLVED: To provide a radial needle bearing which enables further improvement of the lubricity.SOLUTION: A radial needle bearing 30 according to the invention is a full type roller radial needle bearing 30 disposed between a pinion shaft 11 and a pinion gear 19 of a planetary gear mechanism 10 and includes: multiple needles 31 which are disposed between the pinion shaft 11 and the pinion gear 19 so as to be arranged into multiple rows at a predetermined interval in a circumferential direction; and spacers 35, each of which is disposed between rows of the needles 31. Each spacer 35 includes: a first axial lubrication hole 37a and a second axial lubrication hole 37b which communicate with a radial oil passage 13 provided in the pinion shaft 11. |
