1. Elastic coupling positioning screw fixation: The two positioning screws have a gap of 90° to lock the fixed shaft. In the traditional fixing method, because the front end of the screw contacts the shaft, it may cause damage to the shaft or difficulty in disassembly.

　　2. Clamping screw fixation: Utilize the tightening force of the hexagon socket bolt to shrink the slit and clamp the shaft tightly.This method is convenient to fix and disassemble, and will not cause damage to the shaft, so it is a very common fixing method.

　　3. Keyway type fixation: suitable for high-torque transmission. In order to prevent axial sliding, it is usually used together with positioning screws and clamping screws.

　　4. D-shaped hole fixation: Generally, if the motor shaft is D-shaped, if the positioning screw cannot be fixed, the coupling hole can be processed into a d-shaped hole corresponding to the size of the motor shaft, and the positioning is coordinated Screw fixed, don't worry about slipping anymore.

　　5. Expansion sleeve fixation: The tent is compressed and fixed by tightening the four positioning screws on the end of the coupling. It is suitable for the connection and fixation of some stepping motors and servo motors with large torque, such as expansion sleeve diaphragm couplings. , Expansion sleeve plum coupling, expansion sleeve bellows coupling, etc.

　　The pin coupling has a relatively simple structure, easy to manufacture, no lubrication, no need to bond with metal vulcanization, easy to replace the elastic sleeve, no need to move the half coupling, and has a certain degree of compensation for the relative offset of the two shafts and damping and buffering performance.The elastic sleeve works by compression and deformation. Because the thickness of the elastic sleeve is thin, the volume is small, and the elastic deformation is limited, the elastic sleeve pin coupling can compensate the axis displacement and elasticity, but the allowable compensation amount for the axis displacement is less. The elasticity is weak.The elastic sleeve pin coupling relies on the locking force of the pin group to generate the frictional moment on the contact surface, and compress the rubber elastic sleeve to transmit the torque.It is suitable for small and medium-power shafting transmissions with good rigidity of the installation base, high centering accuracy, low impact load and low vibration reduction requirements.