| 摘要 |
PURPOSE:To eliminate a filling work of lubricating oil at assembling time by axially forming a spiral oil feeding groove which communicates with an oil reservoir gap between a shaft supporting plate and an oil reservoir plate on the outer periphery of a reduction gear. CONSTITUTION:When reduction gears 7A, 7B are rotated, lubricating oil is forcibly fed from oil reservoir gaps 14, 13 to a gap between reduction gear shafts 8A, 8B, and both are lubricated. Spiral oil feeding grooves 81A, 81B extending at both ends to the gaps 13, 14 are formed on the outer periphery of the gears 8A, 8B, and lubricating oil is flowed to circulate through the grooves 81A, 81B. |
