Mitsubishi M6G Series Hydraulic Motor | M7 M7G M6 Hydraulic Piston Motor Replacement

Genlu Hydraulic proudly introduces our M7/M7G & M6/M6G/M6F/M6V Series high-pressure fixed displacement piston motors. This series is engineered as a seamless, high-value replacement for the classic Mitsubishi mobile machinery motor standards. Purpose-built for hydraulic drive circuits requiring high starting torque, stability at low speeds, and resilience against severe load shocks, these motors are the workhorses of rotary applications. Genlu guarantees 100% Drop-in Interchangeability in mounting flanges, shaft splines, port layouts, and pressure characteristics compared to original Mitsubishi units. Each M6G motor is validated through 100% simulation testing to ensure optimal volumetric efficiency and long-term reliability under complex operational pressures.

Technical Specifications

• Product Series: Mitsubishi M6G Series High-Pressure Fixed Displacement Piston Motor

• Key Configuration Model: M6G-3N1D-02

• Displacement: Various configurations within M6/M7 standard range

• Rated Operating Pressure: 28 MPa (280 bar)

• Peak Pressure: 35 MPa (350 bar)

• Max Operating Speed: Up to 3000 rpm (model dependent)

• Control Mode: Fixed displacement

• Mounting Interface: Industrial standard flange

• Structural Design: High-pressure axial piston design

Key Technical Advantages:

• High-Torque Start-up: The valve plate timing is optimized specifically for rotary applications, boosting start-up torque at zero RPM to ensure smooth movement under heavy loads without shuddering.

• Shock-Resistant Piston Chamber: Cylinder blocks are forged from high-strength alloy steel, with micro-structural optimization designed to withstand severe cyclic pressure loading without fatigue cracking.

• Precision Valve Plate Timing: Digital tuning of the valve plate opening angles minimizes pressure surges during the transition from suction to discharge, drastically reducing operational noise and structural vibration.

• Heavy-Duty Bearing Support: Equipped with high-capacity double-row tapered roller bearings, the motor can sustain substantial radial and axial loads, making it suitable for both rotary actuation and direct-drive transmission tasks.

Application Areas:

• Construction Lifting Machinery: Swing drive units for crawler cranes and mobile cranes.

• Heavy Mobile Vehicles: Travel motors for special excavators and rotary mechanisms for aerial work platforms.

• Industrial Automation: Hydraulic drive sources for large industrial turntables and heavy-duty material conveyors.

Expert Maintenance Tips:

• Minimize Case Drain Backpressure: The motor case drain must be routed directly to the reservoir with backpressure maintained below 0.3 MPa. Excessive backpressure is the leading cause of premature shaft seal failure.

• Cold-Start Protocol: In low-temperature environments, run a 10-minute no-load cycle to warm the fluid. This ensures proper viscosity for the piston/valve plate interface, preventing premature scouring.

• Filtration Integrity: Given the micron-level tolerances within the piston chamber, enforce filtration standards of ≤10µm. Perform a routine internal leakage test every 2,000 operational hours to monitor motor health.