4440627 Original Excavator Parts Wiper Motor Wiper Motor Assembly EX1200 

Part number 4440624 is a specialized part number for Hitachi's original excavator wiper motor. This motor is the core driving component of the cab windshield cleaning system, responsible for converting electrical energy into mechanical energy, driving the wiper arm and blade to oscillate back and forth to remove rainwater, mud, dust, etc. from the glass, ensuring clear vision and safe operation for the driver in harsh weather and working conditions. As an original standard component, it is usually compatible with multiple series of Hitachi hydraulic excavators, such as the ZX series (such as ZX120, ZX200, ZX330, etc.), EX series (such as EX60, EX200, EX300, etc.), and common models of ZAX series (such as ZAX120, ZAX200, ZAX240, etc.).

The wiper motor is a precision permanent magnet DC motor, typically integrated with a reduction gearbox and an automatic reset mechanism. Its core function is to receive commands from the wiper switch, output stable torque and speed, and drive the wiper linkage mechanism through the output shaft to achieve regular wiping of the wiper blade on the windshield. Its design can withstand continuous vibration impact during excavator operation, wide temperature working environment (-30 ℃ to 80 ℃), and frequent start stop cycles. The original motor has undergone strict testing in terms of output torque, operating noise, service life, and electromagnetic compatibility, and is perfectly matched with the electrical system and mechanical structure of the vehicle, ensuring smooth wiping, accurate resetting, and reliable operation.

The maintenance core of this motor lies in regular inspections, maintaining cleanliness, and preventing malfunctions. Regular inspection: It is recommended to combine daily maintenance every 250 working hours, operate the wiper switch, check whether the motor runs smoothly, whether there is any abnormal noise or intermittent pause, and observe whether the wiper blade wiping effect is clean and whether there is any jumping. The lifespan of the motor is directly related to the condition of the wiper blades, and aged, hardened, or damaged wiper blades should be replaced in a timely manner to reduce the motor load. Keeping the windshield clean and avoiding dry scratches can effectively protect the motor. If the same motor frequently burns out, it is necessary to check whether the power supply voltage is stable and whether there is excessive mechanical resistance in the wiper mechanism.