| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a roll roller which has a small amount of wear even when it is used continuously for a long period, and even when wear occurs, a part on which wear occurs can be replaced for suppressing frequency and costs of maintenance.SOLUTION: The roll roller contacts an object in a frictional state, an attachment part is formed on an axial body in an axial state. To the attachment part, an annular ring member mainly formed of silicon carbide and contacting the object in a frictional state is detachably attached and fitted.</p> |
