| 摘要 |
PROBLEM TO BE SOLVED: To provide a door rail capable of eliminating the need of frequently wiping off excess lubricating oil applied to a rolling surface. SOLUTION: A groove receiving lubricating oil flowing down from the rolling surface side of the door rail along the side face of the door rail is formed in one side surface or both side surfaces of the door rail along the longitudinal direction of the door rail. COPYRIGHT: (C)2004,JPO
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