1. first determine your installation mode, which is the connection mode of shaft sprocket, shaft gear, shaft flange or shaft shaft.
2. the size of the shaft.
3. determine a working torque used by you.
4. you need a function of torque limiter, such as only stopping the drive end or stopping the drive end with the motor, or requiring him to screw the screw, etc...
The above is the basic requirements of 4 points. Because there are too many series, the working conditions of each customer are different, so it is better to consult our company and select the model with the help of our sales staff：