... belt or pulley. When working, tee Synchronous BeltTypes:1) T type synchronous belt2) T type synchronous double belt3) Arc tooth synchronous belt4) Arc tooth synchronous ... of closed round rubber, with teeth and attached belt or pulley. When working, teeth and trough are in harmony and one ... , XXH, T2.5, T5, T10, T20, AT5, AT10, AT20, etc. Arc tooth:3M, 5M, 8M, 14M, 20M, S2M, S3M, S4.5M, S5M ...