| 摘要 |
<p>PURPOSE: To improve durability of a thrust roller bearing by preventing abrasion and seizure to be generated caused by deformation of a race of the thrust roller bearing. CONSTITUTION: Lubricating oil introducing grooves 51, 52 are inclined in relation to the rotary shaft axial direction of a needle roller 34 of a thrust roller bearing 33, the lubricating oil introducing grooves 51, 52 and the needle roller 34 of the thrust roller bearing 33 are crossed, and therefore, a race 35 of the thrust bearing 33 is not partially caved (deformed) into the lubricating oil introducing grooves 51, 52 by the needle roller 34. Accordingly, partial abrasion and seizure of the race 35 facing the lubricating oil introducing grooves can be prevented.</p> |
