Rexroth A6VM Series Axial Piston Variable Hydraulic Motor 160cc For Construction Machinery

Rexroth A6VM160EP2D/63W-VAB010FPB Bent Axis Axial Piston Variable Hydraulic Motor

Key Features

1. Bent-axis axial piston structure, high power density, compact size

2. EP electric proportional control, precise stepless displacement regulation

3. Nominal pressure: 400 bar, Max pressure: 450 bar

4. Wide control range, small inertia, good starting performance

5. Heavy-duty bearing system, long service life

6. Reversible rotation, fits hydrostatic transmission without gear shifting

7. Can be installed inside reducer to save space

Technical Parameters

Application Scenarios

1．Rotary drilling rig power head

2．Mobile crane, crawler crane

3．Crawler excavator, road roller, paver

4．Concrete pump truck, mining machinery

5．Marine hydraulic equipment, metallurgy heavy machine

6．Other heavy-duty mobile hydraulic drive systems

Specifications:

Competitive Advantage:

1. This A6VM160EP2D/63W-VAB010FPB is equipped with EP2D electric proportional control, its core competitive strength. It can steplessly adjust motor displacement remotely via 0-10V or 4-20mA electrical signals to continuously change torque and speed without mechanical gear shifting. It is easy to integrate with machine electronic control systems and realize intelligent control. Suitable for mobile machinery such as concrete pump trucks and road milling machines requiring frequent speed switching. It delivers higher control precision than manually hydraulic controlled models and supports OEM electronic upgrade.
2. The bent-axis design provides high power density and excellent performance across high and low speed ranges. The 160cc maximum displacement produces high torque, and displacement can be adjusted down close to zero for a wide speed regulation range. It runs smoothly at low speed with good start-up performance. Rated pressure reaches 35MPa and peak pressure up to 40MPa to withstand frequent impact loads of construction machinery. Compact size makes installation easier in limited drive space. Compared with same-size straight-axis motors used in mining drilling and crushing equipment, it achieves higher transmission efficiency and less energy loss.
3. This motor works for both closed and open hydraulic circuits, offering great versatility. It can be matched with A4VSO variable piston pumps to build proven hydrostatic transmission systems. Standard flange, shaft and port configuration ensure good interchangeability for spare parts and simple replacement. It has stable demand for OEM new machine assembly and aftermarket repair. Hydraulic system integrators and machinery maintenance shops can select it conveniently, reducing costs in machine design and spare part procurement.

The Analysis For Rexroth A6VM Piston Motor Common Breakdown:

1. The first typical fault of A6VM variable motor is insufficient output torque and unstable speed. Contaminated hydraulic oil may jam the spool of the electric proportional valve, making the EP2D control unit fail to adjust motor displacement normally. Worn valve plate and piston slippers increase internal leakage and pressure loss. This problem causes weak driving power and fluctuating speed for concrete pump trucks and road machinery, failing to meet heavy-load driving requirements.
2. Excessive housing temperature is another frequent failure for A6VM motors. Continuous internal leakage caused by worn piston assemblies converts hydraulic pressure energy into heat. Besides, misadjustment of the electric proportional control loop keeps the motor working at large displacement and generates extra heat. Persistent high temperature ages seals and deteriorates hydraulic oil, which accelerates component wear and creates a vicious cycle, shortening the service life of the motor.
3. Abnormal noise and vibration usually come from cavitation or damaged internal moving parts. Damaged seals on suction pipelines allow air into the closed hydraulic circuit. Air bubbles impact components and produce popping noise. Worn bearings and bent-axis assemblies also create mechanical knocking sounds during operation. Severe vibration may damage the mounting base and pipe joints, cause oil leakage, and even stop the motor, interrupting continuous operation of mining and construction equipment.