The case main body is applied with a cover member for containing therein liquid tightly a reduction gear means, and is applied with {HEAD ~ another cover member} for containing therein {TAIL ~ a V belt} means 
The case main body is applied with a cover member for containing therein liquid tightly a reduction gear means , and is applied with { HEAD ~ another cover member } for containing therein { TAIL ~ a V belt } means
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH