... ,F36261,QTT109 ,QTT219,S903,IR-9822,CR1654 china car belt tensioner pulley bearing Corresponding Type: VKM12200,F-36261,QTT109 ,QTT219,S903,IR ... inner rings, outer rings and balls are adopted high purity of bearing steel which is extremely low in oxygen content ... structure designing so that can attain the traits of high temperature resistant,high speed resistant, long life, etc3, Sealing structure ...