Rexroth A6VM107 A6VM140 A6VM160 A6VM200 A6VM250 A6VM280 A6VM355 A6VM500 Hydraulic motor Hydraulic piston motor

The Rexroth A6VM Series stands as the industry benchmark for high-performance variable displacement Axial Piston Motors. Engineered with a sophisticated bent-axis design, these motors are specifically developed for hydrostatic drives in both open and closed circuits, offering an unparalleled balance of power density, efficiency, and reliability.

Whether for mobile machinery or Heavy-Duty industrial applications, the A6VM series—ranging from the A6VM107 to the massive A6VM500—is designed to handle the most demanding torque and speed requirements.

Technical Overview: The Bent-Axis Advantage

Unlike standard swashplate motors, the A6VM utilizes a bent-axis piston rotary group. This geometric configuration allows for a wider swivel range, enabling a high ratio between maximum and minimum displacement ($V_{g max} / V_{g min}$).

• Wide Control Range: The ability to achieve a minimum displacement of near zero allows for exceptionally high output speeds.

• High Pressure Capability: Designed for high-pressure operations, typically with a nominal pressure of 400 bar and peak pressure up to 450 bar.

• Superior Torque: Provides high starting torque and smooth low-speed operation, critical for winch drives and track systems.

Key Performance Features

1. Optimized Power Density

The A6VM series is characterized by its compact dimensions relative to its power output. By maximizing the displacement within a smaller housing, it allows engineers to save space in tight machine compartments without sacrificing performance.

2. Versatile Displacement Sizes

This product line covers a vast spectrum of industrial needs:

• Mid-Range (A6VM107, 140, 160): Ideal for medium-sized excavators and drilling rigs.

• High-Capacity (A6VM200, 250, 280): Perfect for heavy-duty crane winches and specialized maritime equipment.

• Heavy-Lift (A6VM355, 500): The giants of the series, utilized in large-scale mining machinery and massive hydraulic drive systems.

3. Advanced Control Options

Rexroth offers a variety of control devices to integrate seamlessly with modern electronic or hydraulic management systems:

• HD (Hydraulic Control): Pilot pressure related control.

• EP (Electric Control): Proportional control via electric solenoid, essential for automated and "smart" machinery.

• HA (Automatic Control): High-pressure related control, ideal for maintaining constant power.

• DA (Direct Control): Speed-related hydraulic control.

Typical Applications

The robustness of the A6VM series makes it the preferred choice for:

• Construction Machinery: Excavator travel drives, crawler cranes, and asphalt pavers.

• Mining & Boring: Rotary drives for drilling rigs and tunnel boring machines (TBM).

• Maritime & Offshore: Constant tension winches and deck machinery.

• Material Handling: Heavy-duty forklift drives and container reach stackers.

Maintenance and Durability

Built to withstand harsh environments, the A6VM series features high-quality bearings and precision-engineered piston seals. To ensure maximum service life, these motors are designed for:

• Excellent Suction Characteristics: Reducing the risk of cavitation during high-speed operation.

• Low Noise Emission: Optimized rotary groups reduce fluid-borne noise, contributing to a quieter working environment.

• Interchangeability: The standardized mounting flanges and shaft ends (splined or keyed) allow for easy integration or replacement in existing Hydraulic Systems.

Summary

The Rexroth A6VM107 through A6VM500 series is more than just a motor; it is a precision-engineered solution for variable speed and torque requirements. By choosing the A6VM, you are investing in German engineering excellence that guarantees high volumetric efficiency, long-term durability, and the flexibility to meet any hydraulic challenge.