Settima GR70 SMT Screw Pump | GR20 GR40 GR90 | High Pressure Hydraulic Pump

LIC Hydraulic offers the Settima GR & SMT Series, the ultimate solution for high-pressure, low-noise fluid transfer. As a premier three-screw pump, the GR70 SMT 660L is engineered to replace noisy gear pumps in demanding hydraulic and lubrication circuits. Unlike traditional pumping technologies, Settima’s screw design eliminates fluid pulsation, providing a silky-smooth flow at pressures up to $80\text{ bar}$ ($1160\text{ PSI}$). Covering sizes from GR20 to GR90, this series is globally recognized for its reliability in machine tool cooling, renewable energy, and heavy industrial HPUs.

Technical Specifications (Bulleted List)

• Pump Type: Positive displacement three-screw pump.

• Pressure Range: Continuous operation up to $80\text{ bar}$, peak up to $100\text{ bar}$ (depending on model).

• Flow Rates: Available from $10\text{ L/min}$ to over $1000\text{ L/min}$ (GR70 SMT 660L delivers high-volume efficiency).

• Noise Level: Significantly lower than gear or piston pumps, often below $60\text{ dB(A)}$.

• Materials: High-strength treated steel screws housed in a specialized aluminum or cast iron body.

Key Technical Advantages

• Pulse-Free Delivery: The continuous contact line of the three screws ensures a constant displacement, eliminating vibration in hydraulic lines and protecting sensitive components.

• High Volumetric Efficiency: Precision-engineered screw profiles minimize internal slippage, maintaining high flow rates even as pressure increases.

• Compact & Reliable: The axial flow design allows for a very compact footprint compared to other high-flow pumps, making it easy to integrate into existing manifolds.

• Versatile Mounting: Available with standard SAE, ISO, and various OEM-specific flange configurations for seamless replacement.

Application Areas

• High-End Machine Tools: High-pressure coolant delivery for deep-hole drilling and CNC centers.

• Lubrication Systems: For large engines, compressors, and industrial gearboxes.

• Hydraulic Power Units: For applications requiring ultra-quiet operation, such as theater stage hydraulics or indoor test rigs.

Expert Maintenance Tips

• Inlet Conditions: Ensure the suction line is appropriately sized to prevent high vacuum levels. Screw pumps are robust but perform best with a flooded suction or minimal lift.

• Seal Inspection: Regularly check the shaft seal for leakage, especially in high-pressure applications. Using Viton (FKM) seals is recommended for high-temperature synthetic fluids.

• Monitor Filtration: To ensure the “infinite life” of the screws, keep the system oil cleanliness at $ISO\text{ 18/16/13}$ or better.