The primary function of a PTO clutch is to control the transmission and interruption of power, allowing the engine’s power to be delivered to the working equipment when needed or disengaged when not required. The clutch operates primarily through mechanical friction or hydraulic pressure, and its working principle can be understood through the following steps:

Power Transmission: When the PTO clutch is engaged, the engine transmits power through the drive shaft to the PTO clutch. Inside the clutch, friction plates or a hydraulic mechanism transfer power to the output shaft, which ultimately drives the connected working equipment, such as agricultural implements, concrete mixers, or other machinery.

Clutch Operation: During operation, the operator can control the engagement or disengagement of the PTO clutch using a lever, button, or electronic control system. When an engagement command is given, the clutch determines the power transmission state by controlling the pressure of the internal friction plates or hydraulic system. If the pressure is reduced or completely released, the contact between the friction plates weakens or separates, cutting off the power transmission and stopping the equipment.

Torque Management: The PTO clutch is more than just a simple switch; it also manages torque during power transmission. When the equipment requires high torque, the clutch can increase the friction or hydraulic pressure to enhance the stability and efficiency of power transmission. Conversely, when lower torque is needed or when operations are to be halted, the clutch can reduce or interrupt power transmission, protecting the equipment from overload damage.

Heat Management: During prolonged high-load operations, the PTO clutch generates heat. To ensure proper functioning, many PTO clutches are designed with cooling systems or use heat-resistant materials to prevent failures or performance degradation due to overheating.