| 摘要 |
<p>PROBLEM TO BE SOLVED: To surely inject grease in a required amount even when a reduction gear having a small void volume is used or when grease high in viscosity or consistency is used.SOLUTION: A case 2 of a planetary reduction gear 1 is provided with an injection port 16 communicating with an accommodation space 15 of a planetary gear reduction mechanism 5 and a suction port 17 communicating with the accommodation space 15. Grease is injected from the injection port 16, and air in the accommodation space 15 is concurrently suctioned from the suction port 17.</p> |
