| 摘要 |
PURPOSE:To reduce the one-sided contact between a piston rod and a guide bush and reduce abrasion caused by one-sided contact by providing a gap allowing the deformation of the guide bush between the upper section of the guide bush and the inner periphery of a rod guide. CONSTITUTION:A gap C allowing the deformation of a guide bush 7 is provided between the inner periphery of the upper end section of a rod guide 5 and the upper section of the guide bush 7 inserted into the rod guide 5. Therefore, even when a lateral load is applied to the piston guide 4, an increase of abrasion caused by one-sided contact can be suppressed. |
