M+S MV Hydraulic Motor | MV400C MV500C MV630C | MV400C/4 Motor

The M+S MV Series from LIC Hydraulic is the flagship heavy-duty disc valve motor, engineered for the most demanding applications. Covering displacements from $400\text{cc}$ to $630\text{cc}$ (including MV400C, MV500C, and MV630C), this series offers unparalleled torque density and mechanical robustness. The MV400C/4 configuration provides specific shaft options to suit diverse industrial needs. We guarantee 100% mechanical interchangeability and subject every unit to 100% full-load and axial thrust testing, ensuring reliable operation at continuous pressures up to $200\text{ bar}$.

Technical Specifications (Bulleted List)

• Series: M+S MV Series (Heavy Duty Disc Valve)

• Displacements: $401.3, 499.6, \text{and } 629.1\text{ cm}^3\text{/rev}$

• Rated Pressure: Continuous $200\text{ bar}$ / Intermittent $240\text{ bar}$ / Peak $280\text{ bar}$

• Max Torque: Up to $2110\text{ N}\cdot\text{m}$ ($1556\text{ lb-ft}$)

• Max Speed: Up to $600\text{ RPM}$

• Max Power: Up to $64\text{ kW}$ ($86\text{ HP}$)

• Mounting: C (Circular flange, 4-bolt)

• Shaft Options: $40\text{ mm}$ Keyed, Splined, or Tapered options

Key Technical Advantages

• Geroler Gear Set: The integrated rollers in the gear set reduce friction and wear, providing high starting torque and exceptionally smooth low-speed performance under extreme loads.

• Advanced Disc Valve: Featuring independent pressure compensation, the disc valve minimizes internal leakage across the entire pressure range, maintaining superior volumetric efficiency during long-duty cycles.

• High Radial/Axial Load Capacity: Oversized tapered roller bearings allow the MV motor to handle massive external forces, making it suitable for direct-drive applications without auxiliary bearing supports.

• Rugged Construction: Built with high-strength materials and premium seals, the MV series is specifically designed to withstand the thermal and mechanical stresses found in mining and marine environments.

Application Areas

• Mining: Heavy-duty conveyor drives and feeder systems for crushers.

• Construction: Concrete mixers, large auger drives, and trenching equipment.

• Marine: Large winches, anchor windlasses, and thruster systems.

• Agriculture: Industrial-scale feed mixers and heavy-duty forestry harvesters.

Expert Maintenance Tips

• Case Drain Essential: For MV series motors, connecting the case drain line is highly recommended. Ensure the line is routed directly to the tank to keep case pressure below $5\text{ bar}$ ($72\text{ psi}$), protecting the shaft seal from premature wear.

• Thermal Management: Given the high power output, monitor oil temperatures closely. Use an oil cooler to maintain a steady temperature between $30\text{–}50^\circ\text{C}$ ($86\text{–}122^\circ\text{F}$) to ensure optimal lubrication and seal life.

• Shock Load Mitigation: When driving high-inertia loads, integrate cross-over relief valves into the circuit to prevent pressure spikes during sudden stops, protecting the internal Geroler set from damage.