Pneumatic friction clutches are divided into single-plate friction clutches and multi-plate friction clutches. Single-plate friction clutches have only one driven disc and therefore have two friction surfaces. It is characterized by small axial size and lightweight and is mostly used in cars, light and medium-sized passenger cars, and trucks. In a single-plate clutch, the flywheel and the pressure plate are the active parts of the clutch, and the clutch cover is connected to the pressure plate through a transmission plate made of thin steel sheets, which acts as a transmission so that the pressure plate can rotate together with the flywheel.

    A driven disc with a torsion damper is installed between the flywheel and the pressure plate. The driven disc body made of thin steel sheets is riveted or bonded with friction plates and is connected to the driven disc through the torsion damper spring. The hub is connected, and the spline hole on the driven disc hub is sleeved on the spline of the output shaft and can slide axially on the spline. Due to the limitation of the size of the friction plate, it cannot be used in the case of transmitting large torque. At this time, it is necessary to use a multi-plate friction clutch and increase the transmission capacity by increasing the number of coupling faces.

    As far as the pneumatic friction clutch is concerned, this type of clutch can meet the working environment of high-speed connection and high-speed operation; the two shafts can be combined at different speeds; the combination and separation process is relatively stable, and the impact and vibration are small; the acceleration time of the driven shaft and the transmitted The maximum torque can be adjusted; when overloaded, slippage will occur to avoid damage to other parts.