Rexroth (A4VG45 series) hydraulic travel piston pump used on the M315 wheeled excavator

The Rexroth A4VG45 hydraulic travel piston pump is a closed-circuit hydraulic power unit purpose-built for the travel system of the M315 wheeled excavator. It delivers high-pressure hydraulic oil to drive the travel motor, enabling machine movement with reliable, consistent performance.

Built on a variable axial piston design, the pump combines precise flow control, wear-resistant alloy construction, and precision machining. It is a direct replacement unit engineered for stable output under demanding heavy-duty construction conditions.

• Internal piston and valve plate wear, leading to pressure drop and weak travel torque
• Internal seal failure resulting in hydraulic oil leakage
• Abnormal noise and vibration during operation
• Servo piston stuck, causing flow adjustment failure
• Housing cracks caused by overload and high pressure

• Confirm the pump model A4VG45 and the machine serial number before ordering
• Verify spline specification, mounting dimensions, and control type
• Request strict pressure and performance testing before shipment
• Shockproof wooden packaging to prevent transit damage
• Quality warranty covering manufacturing defects