The driving apparatus can be decreased in {HEAD ~ cost} and {TAIL ~ thickness} while maintaining excellent rotational precision and mechanical precision 
The driving apparatus can be decreased in { HEAD ~ cost } and { TAIL ~ thickness } while maintaining excellent rotational precision and mechanical precision
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH