| 摘要 |
<p>TASK In an guide roller having a bearing retained within a housing, the intrusion of fluid mixed with an abrasive into the housing from a shaft opening thereof is prevented, and the durability of the bearing is improved. SOLUTION In a guide roller (1) having a pair of bearings (2, 3) retained within a housing (4), the housing is provided with a shaft hole (50) for receiving a support shaft (6) to be supported by the bearings, and the shaft hole is provided with a tapered wall surface that progressively decrease in diameter toward inside the housing.</p> |
