Rexroth A6VM200 Piston Motor | A6VM200EP6D1P001G | A6VE28 AA6VM200 | Variable Displacement Bent Axis Motor

The A6VM/A6VE Series high-pressure bent axis variable displacement motors from Chengyuan Hydraulic are premium power components engineered for mobile drives requiring extreme speed ranges and high torque output. These motors are fully compatible with Rexroth Series 63/65 standards. Specifically, the A6VM200EP model features precise Electro-Proportional (EP) control, allowing for dynamic displacement adjustments based on load demand. Whether it is the standard A6VM or the cartridge-style A6VE designed for compact planetary gearboxes, we ensure stability at 400 bar continuous pressure. Every motor undergoes 100% simulated condition testing to guarantee smooth transitions between high torque and high speed, achieving 100% original-place interchangeability.

Technical Specifications :

• Series Model: A6VM / AA6VM (Standard) / A6VE (Cartridge)

• Nominal Sizes: 200 (200 cm³/rev) / 28 (28.1 cm³/rev)

• Design Series: Series 63 / 65

• Variable Displacement Ratio: $V_{g\ max} / V_{g\ min} = 3.47$

• Nominal Pressure: 400 bar (40 MPa)

• Peak Pressure: 450 bar (45 MPa)

• Max Speed (Size 200, at $V_g=0$): 4500 rpm

• Max Speed (Size 28, at $V_g=0$): 8750 rpm

• Control Methods: EP (Electric Proportional) / HZ (Two-point) / HD (Hydraulic Proportional)

• Sealing: FKM (Viton) for high temperature and chemical resistance

Key Technical Advantages:

• 40° Bent Axis Compactness: The bent axis design significantly reduces axial length. By eliminating the slippers found in swashplate motors, the A6VM offers superior reliability under high-frequency pressure pulses and high-speed operation, providing industry-leading power density.

• Wide Displacement Control Range: The displacement can be adjusted from $V_{g\ max}$ down to zero. This allows machinery to achieve massive startup torque at low speeds and exceptionally high travel speeds under light loads, optimizing overall system energy efficiency.

• Enhanced Synchronization Linkage: For large displacement models like the A6VM200, we reinforce the synchronization link between the cylinder and the shaft. Deep heat-treatment processes are applied to prevent fractures during sudden stops or rapid directional reversals.

• 100% Proportional Response Validation: For EP-controlled models (e.g., EP6D1, EP2D6), we use digital acquisition systems to calibrate the linearity between control current and displacement. This ensures minimal hysteresis, perfectly matching the requirements of traction control (ASR) systems.

Application Areas:

• Heavy Crawler Machinery: Travel drives for excavators and crawler cranes.

• Wheeled Vehicles: Main drive motors for combine harvesters and all-terrain cranes.

• Industrial Drives: Winches, drill head rotations, and large-scale mixing systems.

Expert Maintenance Tips:

• Mandatory Case Filling: The A6VM motor has a large internal volume. Before initial startup, the housing must be filled with clean hydraulic oil through the highest drain port (Port T) to prevent dry-run damage to bearings and valve plates.

• Drain Pressure Limits: Maximum continuous backpressure on the drain line should not exceed 2 bar. Excessive backpressure will significantly reduce the life of the shaft seal or cause it to blow out.

• Control Line Cleanliness: Motors with EP or HD controls are extremely sensitive to particles. Maintain system cleanliness at ISO 4406 18/16/13 or better to prevent the control piston from sticking.