... working speed 2.high temperature rise 3.good seal performance china tension pulley bearing Corresponding Type: VKM13100,VKM13201,F-121287 ... .5,QTT100,S400 ,S507,IR-9811 ,IR-9890,CR1692,F-121287 Size: d13 (di 8.2X8 ... of high abrasive resistance, bounce impact force and inflaming retarding.china tension pulley bearing • Tensioner & Idler Bearings • Clutch Release Bearings ...