| 摘要 |
<P>PROBLEM TO BE SOLVED: To replace an existing self-aligning roller bearing having an oil hole in a middle collar by a self-aligning roller bearing having a high load capacity structure, without changing the oil hole of a shaft provided to the existing self-aligning roller bearing with an oil supply structure. <P>SOLUTION: An oil flow passage 16 constituted of a circumference groove 16a and a penetrating groove 16b is preliminarily formed on the inner diameter face of an inner ring 11 in a self-aligning roller bearing 10 having a high load capacity structure which is employed as an alternative, and when the inner ring 11 is fitted and attached to an existing shaft 1 by using an inner ring positioning means, an oil passage is formed from the terminal end of an oil hole 1a in the existing shaft 1 to the end Ei of the inner diameter face of the inner ring 11. Accordingly, oil can be supplied from the end Ei of the inner diameter face of the inner ring 11 into an axle box and reserved therein. <P>COPYRIGHT: (C)2012,JPO&INPIT |
