DINAMIC OIL RMBX Series Radial Piston Motor | RMBX-100 to RMBX-500 | RMPX High Torque Motor

LIC Hydraulic’s DINAMIC OIL RMBX and RMPX Series radial piston motors are engineered for applications where brute force meets precision. Covering the full displacement spectrum from RMBX-100 to RMBX-500, these crankshaft-type motors are the benchmark for high-torque, low-speed (HTLS) performance. We guarantee 100% Drop-in Interchangeability with original DINAMIC OIL units, ensuring seamless integration into your existing hydraulic circuits. Every motor undergoes 100% factory simulation testing for starting torque efficiency and ultra-low-speed stability, making them the ideal choice for maritime winches and heavy-duty drilling rigs.

Technical Specifications (Bulleted List)

• Series Model: RMBX / RMPX (Crankshaft Radial Piston)

• Displacement Range: $100\text{ cc/rev}$ to $500\text{ cc/rev}$

• Continuous Pressure: $250\text{ bar}$ ($3625\text{ PSI}$)

• Peak Pressure: $350\text{ bar}$ ($5075\text{ PSI}$)

• Starting Torque Efficiency: $\ge 95\%$

• Minimum Stable Speed: $1\text{–}5\text{ RPM}$

• Standard Compliance: ISO/SAE mounting options with optional brake integration.

Key Technical Advantages

• Superior Low-Speed Control: The precision mechanical timing and balanced piston geometry eliminate stick-slip, allowing the motor to maintain consistent torque even at speeds as low as $1\text{ RPM}$.

• High Breakout Torque: By utilizing hydrostatically balanced internal surfaces, the RMBX series minimizes internal friction, providing maximum torque from a complete standstill—critical for heavy winch lifting.

• Shock-Resistant Architecture: Built with a high-tensile ductile iron housing and a forged crankshaft, this motor is designed to absorb the intense radial loads and pressure spikes common in offshore and construction environments.

• Full Modular Interchangeability: Designed to meet global industry standards, our RMBX motors serve as a direct replacement for major Italian and European brands without requiring manifold or flange modifications.

Application Areas

• Marine & Offshore: Anchor winches, deck cranes, and propulsion drives.

• Construction: TBM (Tunnel Boring Machine) cutter-head drives, rotary drilling rigs, and heavy hoists.

• Heavy Industry: Metal shredders, large industrial conveyors, and steel mill coilers.

Expert Maintenance Tips

• Case Drain Piping: Always ensure the case drain line is connected to the highest port and returns directly to the tank. Maintain case pressure below $2\text{ bar}$ to protect the shaft seal integrity.

• Vertical Installation: When mounting with the shaft vertically, the motor case must be pre-filled with oil to ensure the upper bearings are fully lubricated during the initial start-up.

• Oil Cleanliness: Radial piston motors are high-precision components. Maintain system filtration at ISO 4406 18/16/13 or better to prevent internal siltation and wear on the crankshaft journals.

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