Rexroth A6VM Series Variable Motor | A6VM107 A6VM160 A6VM200 A6VM250 Axial Piston Motor Replacement

Genlu Hydraulic proudly introduces our mobile fleet and heavy industrial-grade A6VM Series (comprehensively covering 107, 160, 200, and 250 cc/rev baseline displacements) high-pressure axial piston bent-axis variable motors. This series is fully engineered as a seamless, high-value, drop-in replacement for the classic Rexroth 63 series variable bent-axis platforms, adapting flawlessly to replace highly specialized customized engineering configurations including A6VM200HA2T/63W-XPBX1000A-S (featuring high-pressure automatic regulatory valving and integrated closed-loop flushing shuttle valves) and A6VM160HD2/63W-VSD510B (implementing hydraulic proportional stroke displacement manipulation and speed-sensor monitoring interfacings). Serving as the robust high-torque executive component in both closed and open fluid power circuits, these motors implement a time-tested 40° bent-axis orientation delivering wide conversion flexibility and exceptional speed ratios up to $V_{max}/V_{min} = 3.47$. Genlu guarantees 100% Drop-in Interchangeability across standard SAE/DIN mounting configurations, splined output shafts, fluid port porting distances, and control pilot signal pressure modulations compared to OEM Rexroth units. Every single A6VM motor assembly undergoes explicit 100% dynamic simulation full-load testing on our multi-megawatt digital benches to certify microsecond-fast stroke response thresholds and pristine volumetric efficiency bounds under extreme thermal and pressure stress environments.

Technical Specifications 

• Product Series: Rexroth A6VM Series 63 Heavy Duty Axial Piston Variable Bent-Axis Motor

• Key Model Target Identifiers: A6VM200HA2T/63W-XPBX1000A-S, A6VM160HD2/63W-VSD510B (Spanning A6VM107 & A6VM250 baselines)

• Geometric Displacement Profile Matrix:

  • A6VM107 Frame Size: Max Displacement $107 \text{ cc/rev}$ / Min Displacement $0 \text{ cc/rev}$

  • A6VM160 Frame Size: Max Displacement $160 \text{ cc/rev}$ / Min Displacement $0 \text{ cc/rev}$

  • A6VM200 Frame Size: Max Displacement $200 \text{ cc/rev}$ / Min Displacement $0 \text{ cc/rev}$

  • A6VM250 Frame Size: Max Displacement $250 \text{ cc/rev}$ / Min Displacement $0 \text{ cc/rev}$

• Nominal Operating Pressure Rating: 35.0 MPa (350 bar)

• Peak Intermittent Overpressure Threshold: 40.0 MPa (400 bar) absolute (guards against transient structural stalling shocks)

• Maximum Developed Rated Speed: Dependent on individual displacement and working tilt boundaries; ranges up to $3000 – 4000 \text{ rpm}$ at minimum stroking coordinates.

• Primary Regulation Modality:

  • HA2T Control: Automatic high-pressure regulation (automatically destokes to boost output speed as circuit load drops; code T integrates low-pressure flushing shuttle valve)

  • HD2 Control: Hydraulic proportional stroke adjustment (displacement traces先导 pressure line signals linearly)

• System Fluid Cleanliness Threshold: Rigidly restricted to NAS 1638 Class 8 or ISO 19/16/13 metrics or better

Key Technical Advantages:

• Premium 40° Bent-Axis Kinematics: The rotary design mates the spherical-head piston assemblies directly inside the cylinder block bore contours. Eliminating the massive slipping force vectors typical of standard swashplate slipper pads yields higher self-priming limits and lower sliding resistance, keeping gross efficiency steadily above 92%.

• Lens-Shaped Valve Plate and Micro-Finished Cylinder Block: The cylinder face tracks a robust spherical對中 valve plate profile layout. Under sustained 35.0 MPa high-pressure operations, this layout distributes a heavy hydro-dynamic fluid film, compensating for high-angle tilting forces while eliminating internal leakage and uneven component wear.

• Integrated Multi-Functional Control Blocks & Flushing Shuttles: As exemplified by the A6VM200HA2T matrix, the rear enclosure incorporates responsive pilot valve nests alongside a built-in closed-circuit fluid flushing shuttle. This modular design purges thermal oil spikes from the low-pressure path during continuous machine cycles, mitigating heat buildup and delivering stable stroke regulation.

• Heavy Duty Tapered Roller Main Shaft Suspension Cradle: The primary shaft is supported by two high-capacity tapered roller bearings treated with structural hardening processes. Their mechanical centers are mathematically balanced to handle combined heavy radial and axial cantilever overhang forces directly, providing long fatigue life in high-vibration applications.

Application Areas:

• Heavy Construction Crawler Undercarriage Drives: Primary traction wheel assemblies for heavy excavators and high-capacity aerial boom lifts.

• Industrial Drilling Machinery Foundations: Primary hoist drum winches and pull-down auxiliary drive lines for rotary drilling rigs.

• Specialized Mobile Fleets & Forestry Utility Transmissions: Direct drum rotation for transit concrete mixers, high-torque feed lines for forestry tree harvesters, and main hoisting hoist blocks for hydraulic mobile cranes.

Expert Maintenance Tips:

• Mandatory Pre-Commissioning Shell Evacuation and Fluid Flooding (Critical Protocol): Prior to initial engine start-up, you must flood the motor casing to the brim through its highest case drain port (typically labeled T1 or T2) using filtered hydraulic fluid. Because the cylinder block sits tilted inside the case housing, dry start-ups will cause instant metal-to-metal scuffing across the main spherical valve interfaces before fluid pressure films can develop, destroying the pump rotating components in seconds.

• Protect Variable Pilot Supply Streams from Debris and Spiking Traces: For HD2 proportional control configurations, the incoming pilot actuation signal must track the technical manual limits with zero variation. Any micro-particulate contamination or sudden pressure pulsation in the pilot circuit will jam the sensitive stroke spool, risking abrupt stalling or dangerous tracking velocity excursions.

• Maintain Internal Housing Drain Pressures Below 0.2 MPa (2 bar): The independent casing return lines must route back to the fluid reservoir without structural restriction or isolation valves. Allowing internal backpressure to rise will breach the dual-lip shaft seal assembly and cause a mechanical balance shift that lifts the cylinder block away from the valve plate, triggering severe internal high-pressure fluid cross-talk.