... china tension pulley bearing Corresponding Type: VKM13100,VKM13201,F-121287.5,QTT100,S400 ,S507,IR-9811 ,IR ... 19 ,08.29.19,0829.54,GT80260,F-121287.1,F-39752.2,F-120959.1.1, The material of ... ), they are also adopted the special heat treatment to get the excellent material structure and lengthen the bearings ... CD. www.dys.com.cn/CD Warmly welcome to contact us for more details,thanks for attention,have ...