| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a needle bearing cage manufacturing method for reducing the stress of a cage. <P>SOLUTION: A columnar portion 12b of the cage 12 is plastically machined at its inner diameter side to form projecting portions 12f, 12f. The projecting portions 12f, 12f thus have greater thicknesses while securing projecting amounts. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
