发明名称 |
Thrust roller bearing and method for manufacturing thrust race thereof |
摘要 |
A thrust race of a thrust roller bearing has a race portion and a cylindrical portion extending from the race portion in an axial direction. At a plurality of locations along a circumferential direction on the cylindrical portion, cutout portions are formed such that each of the cutout portions is recessed in the axial direction from a distal edge of the cylindrical portion toward the race portion. A protrusion is provided at a portion closer to the race portion from a bottom edge of each of the cutout portions such that the protrusion protrudes in a radial direction from the cylindrical portion toward a side away from the race portion. The protrusion serves as a race-retaining locking portion to prevent a race from moving out from a mating member on which the race is mounted. |
申请公布号 |
US9261135(B2) |
申请公布日期 |
2016.02.16 |
申请号 |
US201414184871 |
申请日期 |
2014.02.20 |
申请人 |
NSK LTD. |
发明人 |
Hara Hiroyuki;Kanou Kazuhiko;Yokota Tomoyuki |
分类号 |
F16C33/58;F16C23/00;F16C19/30;F16C33/64;F16C35/06;B23P15/00 |
主分类号 |
F16C33/58 |
代理机构 |
Sughrue Mion, PLLC |
代理人 |
Sughrue Mion, PLLC |
主权项 |
1. A thrust roller bearing comprising:
an annular cage having a plurality of pockets arranged at a plurality of first locations along a circumferential direction such that each of the pockets is oriented in a radial direction; a plurality of rollers held inside the respective pockets in a rollable manner; and at least one thrust race comprising an annular race portion on which a rolling surface of each of the rollers contacts in a rolling manner, and a cylindrical portion extending in an axial direction from a circumferential edge of the annular race portion toward a side on which the rollers are arranged, wherein protrusions are formed at a plurality of second locations along the circumferential direction on the cylindrical portion of the thrust race such that each of the protrusions protrudes in the radial direction toward a side away from the annular race portion and has a width in the circumferential direction, wherein the protrusions are configured to contact, in the circumferential direction, a mating member on which the thrust race is mounted to prevent the thrust race from rotating with respect to the mating member, and a distal end of at least one of the protrusions is a distal end of the cylindrical portion. |
地址 |
Tokyo JP |