The pressure plate of the clutch can be rotated.

The function of the press disc and the driven disc of a car clutch is to transfer the engine's power to the gearbox when they are combined, that is, the transmission power. The friction plate is also called the clutch piece, because in the clutch, it is an important part of the clutch, which is combined or separated by friction and clutch.

The clutch has three important functions: transmission power, power cut off, and overloading.

The clutch pressure plate mounted on the engine flywheel, rotates with the engine; the driven disc (i.e. friction plate) through the combination of spline groove and the input shaft of the gear box, when the friction plate rotates, the input shaft of the gear box is rotated; when the pressure plate in the spring under the pressure on the driven plate. Drive power; when the pressure in the clutch pedal, clutch driven disc return, there is no force, namely the state of separation; if the clutch pressure plate spring light, not all, this is the half clutch, also called half linkage.