In addition, the pocket inner surface of the retainer of the transmission apparatus is formed in a curved surface surrounding a peripheral portion of a ball housed in {TAIL ~ a pocket}, thus allowing easy and accurate formation of {HEAD ~ pockets} 
In addition , the pocket inner surface of the retainer of the transmission apparatus is formed in a curved surface surrounding a peripheral portion of a ball housed in { TAIL ~ a pocket } , thus allowing easy and accurate formation of { HEAD ~ pockets }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD