A specific type of pressure washer utilizes a belt-and-pulley system to transfer power from the motor to the pump. This design contrasts with direct-drive models, where the pump is directly coupled to the motor. This mechanical configuration offers several advantages, often resulting in a more robust and longer-lasting machine suitable for demanding applications.
This method of power transmission typically allows for higher torque transfer and can contribute to smoother operation and reduced pump stress, particularly under heavy load. Historically, this design has been favored for professional and industrial applications, though its advantages have become increasingly accessible to the consumer market. This system also offers easier serviceability as belts are relatively simple and inexpensive to replace compared to repairing or replacing a direct-drive pump.
