Wear characteristics of synchronous belt ( 1) Transmission accurately, non-slip at work, have a constant velocity ratio; （ 2) Is stable and has buffer and damping capacity, low noise; （ 3) High transmission efficiency, can reach 0. 98, energy-saving effect is obvious; （ 4) Convenient maintenance, without lubrication and maintenance cost is low; （ 5) Large range of speed ratio, generally can be up to 10, linear velocity can reach 50 m/s, has great power transmission range, can reach several to several hundred thousand watts; （ 6) Can be used in long distance transmission center distance can reach more than 10 m. ( 7) No pollution, can be in there is no pollution and place under normal working environment is relatively poor job design steps of synchronous belt wheel can be divided into two components, for the synchronous belt and synchronous round, as the name implies, synchronous belt wheel is composed by the conveyor belt and toothed belt pulley. As long as the synchronous belt and synchronous wheel at the same time using talents develop a effect, separate is useless. Though is the mutual connection between them, but meanwhile tooth need requires the corresponding, if not calculate, could be skewed, so the yield and the device is very important, even more so when producing, the need for each other between size and size, pitch, tooth height, with thick to measure, the manufacture should be accurate, the pace when the device is also key.