| 摘要 |
<p>In the present invention, a roller is provided with an external peripheral rolling surface molded by simultaneous processing of end surfaces of a plurality of rollers in a state in which the end surfaces are in contact with each other, and a projection for protruding in the axial direction from an axially directed end of the external peripheral rolling surface. The projection has a projection end surface in contact with an end surface of an adjacent roller during grinding of the external peripheral rolling surface, and an axially directed gap is formed between ends of adjacent rollers on the external peripheral rolling surface in the state in which the projection end surface is in contact. Furthermore, a gap is present between the projection and a tool used during processing of the external peripheral rolling surface.</p> |
