Synchronous belt wheel specification is not uniform, but according to the different types of what are the specifications to determine. Synchronous belt transmission is from the inside of a surface with the spacing ring belt and have appropriate tooth of pulley, runtime, toothed with pulleys tooth meshing transfer movement and power, integrated the merits of a belt drive, chain transmission gear drive the new belt transmission. After choose the synchronous belt wheel specification, should be like we show that two things. Now that the first is the good choice of the specifications of the synchronous belt wheel, the choice of what kind of pulley type are also determined. Then there is the alternative specifications can be installed with wheel. In choosing a good synchronous belt wheel specification, also need to pay attention to the synchronous belt and synchronous wheel installation and use note: reduce the number of belt wheel center distance, if there is a tension wheel should be loosened, mount tape again after adjusting the center distance. For fixed transmission center distance, should first remove the pulley, the belt again after loaded on the belt wheel fixed on put pulley to the shaft. Synchronous belt with trapezoidal tooth and two types of arc tooth, arc tooth has three series: arc tooth, flat and concave head parabolic tooth. Arc tooth synchronous belt besides tooth profile for curved shape, the structure and basic same trapezoidal tooth synchronous belt, belt pitch, the depth of tooth, tooth root thickness and fillet radius are larger than the trapezoidal tooth.