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Rexroth A6VE107HA2/63W-VZL027A Hydraulic Motor
Overview
The Rexroth A6VE107HA2/63W-VZL027A is a high-performance variable displacement axial piston motor manufactured by Bosch Rexroth. As part of the A6VE series, this motor features a bent-axis design and is engineered for hydrostatic transmissions in both open and closed circuits, delivering precise control of fluid flow and exceptional reliability in demanding mobile and industrial applications. The A6VE series is widely recognized for its high power density, compact construction, and excellent low-speed operating characteristics.
Technical Features
Bent-Axis Design with Axial Tapered Piston Rotary Group — The motor utilizes a bent-axis design with an axial tapered piston rotary group, specifically engineered for hydrostatic drives in both open and closed circuits. This design enables efficient hydraulic power conversion with high power density.
Plug-in Motor Design — The motor features a variable plug-in design that allows for seamless integration into mechanical gearboxes. The recessed mounting flange located on the center of the case provides an extremely space-saving construction, enabling the motor to be simply inserted into the gearbox without requiring complex configuration or alignment procedures.
High Displacement & Pressure Capacity — The motor has a maximum displacement of 107 cm³ per revolution. It operates at a nominal pressure of 350 bar and can withstand maximum intermittent pressures up to 400 bar, making it suitable for high-pressure heavy-duty hydraulic systems.
Stepless Variable Displacement — The displacement can be infinitely changed from Vg max to Vg min (=0), providing exceptional flexibility to adjust output speed and torque according to different working requirements.
High Pressure Capability — The A6VE series is designed as a high-pressure motor capable of operating at nominal pressures up to 450 bar with maximum pressures reaching 500 bar, suitable for demanding high-pressure applications.
Wide Speed Range — The motor is approved for very high-speed operation while maintaining excellent low-speed operating characteristics, offering a broad control range that satisfies both high-speed and high-torque requirements.
Compact & Space-Saving Construction — Due to the recessed mounting flange design, the motor offers a very compact footprint, making it ideal for installations where space is limited.
Robust Bearing System — The motor features a compact, robust bearing system that provides a long service life, high power density, and excellent starting characteristics.
High Volumetric Efficiency — The motor offers high volumetric efficiency, smooth operation, good flow uniformity, and low noise levels, contributing to overall system efficiency.
Low Noise Operation — The motor is designed for low noise operation, making it suitable for noise-sensitive environments while maintaining high working pressure capabilities.
Excellent Suction Characteristics — The motor provides superior suction characteristics, ensuring stable performance during operation.
Short Control Response Times — The motor features short response times, ensuring quick and precise control in dynamic hydraulic applications.
Optional Features — The motor can be equipped with optional features including an attached flushing and boost pressure valve, as well as an integrated or attached counterbalance valve, allowing customization for specific application requirements.
Tested Unit Ready to Install — The motor is delivered as a complete, tested unit ready for installation, simplifying the commissioning process.
Key Functionalities
Hydrostatic Transmission in Open and Closed Circuits — The motor is designed for hydrostatic drives in both open and closed circuits, providing versatility for various hydraulic system configurations.
Stepless Speed and Torque Control — The motor's output speed depends on the pump flow rate and the motor displacement, while the output torque increases with the pressure differential between the high-pressure and low-pressure sides and with increasing displacement. The wide control range enables the variable motor to satisfy requirements for both high speed and high torque.
Direct Gearbox Integration — The plug-in design allows the motor to be easily inserted into mechanical gearboxes without complex installation procedures, with the housing's center flange mounting ensuring a perfect fit into the gearbox.
High Starting Torque — The motor delivers excellent starting torque, enabling it to overcome heavy breakaway loads in demanding applications.
Reversible Operation — The motor supports reversible operation, offering flexibility for bidirectional drive applications.
Energy Efficient Operation — With high volumetric efficiency and low power losses, the motor contributes to overall system energy efficiency and reduced operating costs.
Easy Maintenance — The motor is designed for easy maintenance, with key components that can be accessed and replaced with minimal downtime.
Application Sectors
The Rexroth A6VE107HA2/63W-VZL027A hydraulic motor is designed for heavy-duty mobile and industrial applications requiring high-pressure, high-power hydraulic drives with precise speed and torque control. The motor is particularly suitable for mobile applications due to its compact design and easy installation, and is widely used across a broad spectrum of industries:
| Industry Sector | Typical Applications |
|---|---|
| Construction Machinery | Excavators, loaders, bulldozers, pavers (e.g., SP160 paver travel drives), concrete pump trucks, drilling equipment, cranes |
| Agricultural Machinery | Combine harvesters, tractors, self-propelled agricultural equipment, heavy agricultural machinery |
| Industrial Machinery | CNC machine tools, injection molding machines, blow molding equipment, plastic machinery, die-casting machinery |
| Metallurgy & Steel | Steel mill hydraulic machinery, rolling mill hydraulic stations, continuous casting equipment |
| Ceramic Industry | Ceramic press machines, tile presses, ceramic factory hydraulic equipment, refractory presses |
| Paper Manufacturing | Paper mill hydraulic systems, paper machinery hydraulic components |
| Aerospace | Aircraft landing gear systems, flight control systems, aerospace hydraulic equipment |
| Oil & Gas / Petrochemical | Oil field equipment, drilling machinery, petrochemical processing equipment |
| Mobile & Stationary Applications | Both mobile equipment and stationary industrial machinery requiring reliable hydraulic power |
| General Industry | Food processing, chemical processing, environmental protection equipment, urban construction machinery, pharmaceutical equipment |
Performance Specifications
| Specification | Value |
|---|---|
| Manufacturer | Bosch Rexroth |
| Series | A6VE |
| Model Code | A6VE107HA2/63W-VZL027A |
| Motor Type | Axial piston variable displacement motor (bent-axis design) |
| Circuit Type | Open circuit and closed circuit |
| Displacement (Vg max) | 107 cm³/rev |
| Nominal Pressure (Continuous) | 350 bar (5,076 psi) |
| Maximum Intermittent Pressure | 400 bar (5,800 psi) |
| Series 6x Maximum Pressure | 450 bar nominal / 500 bar peak |
| Speed Range | Very high speed capability with excellent low-speed characteristics |
| Flow Rate | Variable, depending on displacement and speed |
| Control Type | Pressure control with hydraulic control (HA2) |
| Rotation Direction | Clockwise (R) when viewed from shaft end |
| Material | Cast iron housing |
| Weight | Approximately 16–60 kg (depending on configuration) |
| Fluid Compatibility | Mineral oil-based hydraulic fluids, synthetic hydraulic oils |
| Operating Temperature Range | -25°C to +90°C |
| Fluid Cleanliness Requirement | ISO 4406 minimum |
| Mounting Type | Recessed mounting flange (center case) for gearbox integration |
| Installation | Plug-in design, no complex configuration required |
Conclusion
The Rexroth A6VE107HA2/63W-VZL027A is a high-performance variable displacement axial piston motor that exemplifies Bosch Rexroth's decades of expertise in hydraulic drive technology. With its advanced bent-axis design, stepless variable displacement capability, excellent suction characteristics, and robust construction, it delivers exceptional power density, precise speed and torque control, and reliable operation for demanding hydrostatic transmission applications.
The motor's defining feature is its plug-in design with a recessed mounting flange, which allows for seamless, space-saving integration into mechanical gearboxes with simple insertion and no complex configuration. This makes it particularly well-suited for mobile applications where compact installation and ease of maintenance are critical.
With high pressure capability (nominal 350 bar, maximum 400 bar), a wide control range that satisfies both high-speed and high-torque requirements, low noise operation, and a robust bearing system providing long service life, this motor is an ideal solution for a wide range of applications—from construction machinery, agricultural equipment, and industrial machinery to steel mills, ceramic presses, paper manufacturing, and even aerospace systems.
As a proven, reliable, and energy-efficient solution for hydrostatic drives worldwide, the A6VE107HA2/63W-VZL027A stands out as a versatile component where consistent high-pressure performance, precise control, and long-term dependability are essential requirements.
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