The elastic member 98 is provided on the opposite side in the trench 92 to the side on which the cam surface 100 is formed and biases {TAIL ~ the roller bearing} 96 toward {HEAD ~ the cam surface} 100 
The elastic member 98 is provided on the opposite side in the trench 92 to the side on which the cam surface 100 is formed and biases { TAIL ~ the roller bearing } 96 toward { HEAD ~ the cam surface } 100
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 TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH