JP2010071363A5

JP2010071363A5 -

Info

Publication number: JP2010071363A5
Application number: JP2008238302A
Authority: JP
Filing date: 2008-09-17
Publication date: 2012-10-11
Anticipated expiration: 2028-09-17

Description

本発明は、外輪と、内輪と、前記外輪および前記内輪の間に転動可能に設けられている複数の転動体と、この複数の転動体を周方向に所定間隔毎に保持するとともに、前記外輪、前記内輪、または前記転動体によって回転が案内される保持器と、を備えている転がり軸受であって、前記保持器が、軸方向の両端部に配置されている一対の円環部と、両円環部間に架け渡されているとともに前記転動体を収容するためのポケットを互いの間に形成している周方向に複数の柱部とを備え、前記保持器を案内していない前記外輪および前記内輪の一方または双方と、前記円環部との間に、潤滑油の流通を制限するシール隙間が形成され、前記円環部の軸方向の外側面が、少なくとも径方向外側部分において径方向外方に向かうに従って漸次前記軸方向他方側に位置するように傾斜する傾斜面に形成されていることを特徴とする。 The present invention includes an outer ring, an inner ring, a plurality of rolling elements provided in a rollable manner between the outer ring and the inner ring, and holding the plurality of rolling elements at predetermined intervals in the circumferential direction. A rolling bearing comprising an outer ring, the inner ring, or a cage whose rotation is guided by the rolling element, wherein the cage is disposed at both ends in the axial direction; And a plurality of pillars in the circumferential direction that are spanned between the two annular parts and that form pockets for accommodating the rolling elements therebetween, and do not guide the cage A seal gap is formed between one or both of the outer ring and the inner ring and the annular part, and the outer circumferential surface of the annular part is at least a radially outer part. In the axial direction gradually toward the radially outward Characterized in that it is formed as an inclined surface inclined so as to be positioned on the other side.

また、円環部の軸方向の外側面付近に存在する潤滑油は、保持器の回転に伴う遠心力によって径方向外方へ流れながら、当該側面の傾斜に沿って円環部から離反する方向に導かれる。したがって、円環部と外輪との間から転がり軸受内部へ余剰の潤滑油が流入するのをより効果的に抑制することができる。 Further , the lubricating oil present near the outer surface in the axial direction of the annular portion flows away from the annular portion along the inclination of the side surface while flowing radially outward due to the centrifugal force accompanying the rotation of the cage. Led to. Therefore, it can suppress more effectively that excess lubricating oil flows in into a rolling bearing from between an annular part and an outer ring.

Claims

An outer ring, an inner ring, a plurality of rolling elements provided between the outer ring and the inner ring so as to be capable of rolling, and holding the plurality of rolling elements at a predetermined interval in the circumferential direction, the outer ring, the inner ring Or a rolling bearing provided with a cage whose rotation is guided by the rolling elements,
The cage is formed between a pair of annular portions disposed at both ends in the axial direction and a pocket for accommodating the rolling elements between the annular portions. With a plurality of pillars in the circumferential direction,
A seal gap is formed between one or both of the outer ring and the inner ring that does not guide the cage, and the annular portion, and restricts the flow of lubricating oil .
The outer surface in the axial direction of the annular portion is formed as an inclined surface that is inclined so as to be gradually positioned on the other side in the axial direction as it goes radially outward at least in the radially outer portion. Rolling bearing.