Hitachi excavator accessory 2049901 walking motor pump bladder

The Hitachi excavator 2049901 walking motor pump housing (final drive motor rotor/pump case rotor) is the hydraulic drive component at the core of the walking mechanism, directly responsible for high-precision rotation of the motor rotor, walking speed control, and thrust output. Made of high-strength cast iron/alloy steel material, high-precision machined rotor, precision rolling bearings, and high-pressure resistant sealing rings, it is resistant to vibration, wear, pollution, and high temperature corrosion. Perfectly solves walking mechanism failures such as weak walking, unstable walking speed, walking shaking, abnormal noise of walking motor, non rotation of walking motor, high hydraulic oil and water temperature, and weak holding of the vehicle (highly related to the interlock protection mode after low high-pressure common rail pressure).