| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To design an inner ring thinner than a conventional one even under severe axial load condition by permitting only the circulation (intrusion) of air at butting part of the inner rings, and enlarging an area of the butting part while preventing the circulation of water, foreign matter or the like to solve strength poverty by reducing bearing pressure of the butting part. <P>SOLUTION: A T-shaped inner ring spacer 30 is mounted on the butting part of the inner rings 13. The T-shaped inner ring spacer 30 comprises a main body 31 mounted between end faces of the inner rings 13, 13, and a pair of shoulder parts 32, 32 extended to cover outer-diameter faces of the inner rings 13, 13. A pair of O-rings 33, 33 are respectively mounted between an inner-diameter side of each of the pair of shoulder parts 32, 32 and the outer diameter face of each of the inner rings 13, 13. Squeezes of the O-rings 33, 33 are determined to the degree to permit the circulation of the air, while preventing the circulation of foreign matter. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
