The meshing parameters such as the tooth type and pitch of the synchronous belt pulley are the same as those of the synchronous belt. (for details, please refer to: arc tooth synchronous belt or trapezoidal tooth synchronous belt). Only the number of teeth (or diameter) and structure need to be determined.

The number of teeth (or diameter) of the synchronous pulley is generally determined by the number of teeth of the small pulley first, and then the number of teeth of the large pulley according to the transmission ratio. In order to ensure the proper service life of the synchronous belt, the diameter of the small synchronous pulley should be greater than the allowable minimum bending diameter in the table (see the minimum allowable bending diameter of synchronous belt on the webpage for details), and then converted into the minimum number of teeth. Considering the minimum number of teeth and the minimum number of teeth allowed by the structure of the synchronous belt. After the number of teeth of the small wheel is determined, the number of teeth of the large wheel can be determined according to the transmission ratio. Then the center distance of the two pulleys is determined according to the structure, and the pitch line length or the total number of teeth is calculated according to the pitch of the synchronous belt. So far, all the transmission parameters have been determined.

There are many kinds of structure of synchronous belt pulley, which can be divided into flange free B type (including BF and BS) and flange type A, that is, there is a section of cylindrical flange (including AF type and as type) in addition to the tooth part with baffle at both ends. Please refer to the pulley page of the product center for details

From the way of connecting with the shaft, it can be divided into three kinds: screw, key and expansion sleeve (the so-called keyless connection). The screw connection is simple and easy to assemble and disassemble, but the concentricity of the shaft wheel is poor, and the corresponding flat square or socket should be machined on the shaft; the advantages and disadvantages of the key connection are self-evident; the expansion sleeve connection performance is good, but the cost is high.