Rexroth A6VE160 A6VE170 Axial Piston Plug-in Variable Motor

The A6VE Series Bent-Axis Axial Piston Plug-in Variable Displacement Motors, starring the high-precision controlled A6VE160HP5D10001H/65MWV0S2A18WF-S (Series 65) and the maximum power-density A6VE170HA1T30004F/71MWV0S2A12G0-0 (Series 71), by Chengyuan Hydraulic represent premium industrial fluid power elements engineered for 100% direct drop-in interchangeability within global heavy-duty mobile and industrial drive trains. Manufactured in technical compliance with Bosch Rexroth official application manuals and geometrical layout standards, this motor series matches original plug-in mounting profiles, DIN 5480 standard S2 splined shaft parameters, and pilot control oil configurations. Sourcing procurement networks can implement these units directly into active mechanical planetary travel gearboxes (such as GFT or GFB series) with zero structural engineering adaptation or manifold modification.

Functions as the precise speed and high-torque execution core for closed and open-loop hydrostatic networks, the A6VE line utilizes a 40° bent-axis design, achieving a wide displacement ratio and superior breakaway start torque efficiency over conventional swashplate designs. Crucially, the newly minted Series 71 A6VE170 configuration leverages optimized cylinder blocks and micro-piston structures to expand the displacement threshold to 170 cc/rev inside an envelope virtually identical to size 160 frame layouts, maximizing the continuous power-to-weight index. At Chengyuan, all operational risks are eliminated through our 100% rigorous dynamic simulation test bench criteria. Every motor completing production is subjected to full-load verification at a continuous 400 bar, validating millisecond-level HP5D proportional response curves, HA1T high-pressure automatic shifting hysteresis thresholds, and tracking digital speed sensor output to guarantee absolute on-site performance.

Technical Specifications

• Product Series Classification: A6VE Axial Piston Variable Displacement Plug-in/Cartridge Motor (Series 65 / Series 71)

• Circuit Configurations: Fully operational across Open and Closed Loop hydrostatic networks

• Nominal Continuous Operating Pressure: 400 bar (40 MPa)

• Maximum Peak Shock Pressure: 450 bar (45 MPa)

• Sealing Configuration: V (Premium FKM Viton high-pressure compound, resistant to high thermal shear)

• Drive Shaft Specification: S2 (DIN 5480 standard plug-in involute splined drive shaft)

• Model-Specific Technical Parameters:

  • Model Designation: A6VE160HP5D10001H/65MWV0S2A18WF-S (Series 65 Proportional Control Layout)

  • Maximum Geometric Displacement (Vg max): 160.0 cc/rev ($cm^3/rev$)

  • Minimum Geometric Displacement (Vg min): Fully adjustable via system application needs

  • Control Configuration (HP5D): Hydraulic proportional control (displacement varies linearly with pilot pressure) with built-in pressure override features

  • Maximum Rotational Speed (at Vg max): 3600 rpm

  • Maximum Rotational Speed (at Vg min): 5500 rpm

  • Digital Speed Telemetry (-S): Integrated high-frequency electronic speed sensor for real-time rpm closed-loop tracking

  • Net Component Weight: Approx 75.0 kg

  • Model Designation: A6VE170HA1T30004F/71MWV0S2A12G0-0 (Series 71 Advanced Power Density Layout)

  • Maximum Geometric Displacement (Vg max): 170.0 cc/rev ($cm^3/rev$)

  • Minimum Geometric Displacement (Vg min): Custom preset adjustable

  • Control Configuration (HA1T): Automatic high-pressure control (internal pilot line; strokes up-scale automatically with load hikes) with integrated travel brake/stroke-limiting overrides

  • Maximum Rotational Speed (at Vg max): 3500 rpm

  • Maximum Rotational Speed (at Vg min): 5300 rpm

  • Technical Generation Upgrade: Series 71 platform (optimized cross-section channels yielding 6.2% higher torque density over standard 160 units)

  • Net Component Weight: Approx 78.0 kg

Key Technical Advantages

• Spatial Optimization via Integrated Plug-In Cartridge Mounting: The A6VE series relies on an embedded plug-in configuration, allowing the bulk of the motor housing to seat inside the internal pocket of the planetary gearbox or winch drum. This configuration compresses the overall axial overhang dimension by nearly 40%, optimizing tight chassis spatial limitations in undercarriages and reducing rotational vibrations stemming from off-center load lines.

• Micron-Precision Lapped Bi-Metal Spherical Valve Plate: The primary tribological rotating block and spherical valve plate mating zone are machined from vacuum-sintered bi-metal bronze alloy layered onto treated steel. Finished using multi-axis CNC micro-lapping, the fluid film running gap is managed down to micron thresholds. This guarantees excellent seal integrity under continuous 400 bar cyclic loads, keeping volumetric efficiency above 96% and minimizing fluid-induced thermal spikes.

• Advanced Fluid Channel Topology on the Series 71 Architecture: The A6VE170 configuration benefits from Series 71 layout upgrades. Without enlarging the physical mounting installation boundaries, engineers implemented a 40° bent-axis piston cluster combined with a CFD-optimized housing profile. This significantly enhances fluid通流 capacity, generating higher torque outputs within tight space limits.

• Digitalized Closed-Loop Telemetry and High-Response Spools: The HP5D valve assembly embedded on the A6VE160 model integrates EDM micro-profiled metering edges on its tracking spool to minimize hysteresis. Complemented by the trailing digital speed sensor suffix (-S), the motor forwards fast pulse data to the main machine ECU, enabling advanced anti-slip regulation (ASR) and smooth hydrostatic cruise control.

Application Areas

Thanks to their extreme spatial compactness, high control accuracy, and heavy torque thresholds, the A6VM/A6VE plug-in motors are highly integrated across complex planetary final drives and winch drums:

• Heavy Crawler Travel Assemblies: Final travel propulsion units for 40-to-100 ton heavy hydraulic excavators, rotary piling rigs, and diaphragm wall grab equipment (slotted directly into GFT series gearboxes).

• Heavy Lift Marine Deck & Mobile Crane Winches: In-drum hoisting power units for multi-ton heavy crawler cranes, offshore winch spools, umbilical cable reels, and marine crane asset drives.

• Underground Tunneling & Mining Roadheaders: High-torque cutter-head drives, star-wheel loader circuits, and heavy tracked traction systems for mining roadheaders and tunnel boring machines (TBM).

Expert Maintenance Tips

• Mandatory Air Purging and Case Priming for Embedded Housings: Because the A6VE series seats deeply into planetary gear pockets, its internal fluid ports can be hard to monitor. Prior to initial system commissioning or following an overhaul, the motor case must be fully primed with clean, filtered hydraulic fluid via the highest available drain port. Running the unit dry will cause instant metal-on-metal friction welding of the 40° piston heads, destroying the motor within 5 seconds.

• Manage Continuous Case Drain Back-Pressure Below $\le 2$ bar: The motor case drain line must route independently and without restriction back into the oil reservoir. It must never merge with main return lines or counterbalance valve return piping. Ensure active case pressure tracks at $\le 2$ bar; excessive back-pressure will compromise the high-pressure FKM front shaft seal, leading to massive hydraulic oil migration into the planetary gearbox, contaminating the gear lubricant.

• Enforce Anti-Cavitation Protocols During Closed-Loop Directional Shifts: Under high-frequency reversal or hard deceleration phases (such as heavy winch lowering maneuvers), it is imperative to verify that the closed loop’s low-pressure charge system maintains a steady 18 bar to 25 bar. Any momentary charge pressure drop will induce localized cavitation on the bi-metal spherical valve plate, triggering severe surface pitting and permanent component decay.