High Pressure Internal Gear Pump IGP Series | IGP6-M160-SF | IGP3 IGP4 IGP5

The IGP Series from LIC Hydraulic represents the pinnacle of internal gear pump technology, featuring advanced gap compensation for high-pressure industrial environments. Covering the full range from IGP3 to IGP6, including the high-capacity IGP6-M160-SF, these pumps are engineered for applications requiring ultra-low noise and high volumetric efficiency. We guarantee 100% mechanical interchangeability and subject every unit to 100% full-load pressure testing and ripple analysis, ensuring professional performance in servo-hydraulic and traditional power units.

Technical Configuration Details

• Series Hierarchy: IGP3, IGP4, IGP5, and the heavy-duty IGP6 series.

• High-Pressure Capability: Continuous operating pressure up to $315\text{ bar}$ ($4500\text{ psi}$).

• Precision Displacement: Options like H080, H100, H125, and M160 to match specific flow demands.

• Construction: High-strength cast iron housing with precision-ground internal gears and compensation plates.

Key Technical Advantages

• Intelligent Gap Compensation: The radial and axial compensation mechanism ensures that internal leakage is minimized even at peak pressures, translating to superior energy efficiency and lower oil temperatures.

• Acoustic Excellence: The internal gear engagement is inherently smoother than external designs, providing a whisper-quiet operation that meets stringent modern factory noise standards.

• Minimal Pressure Ripple: Low pulsation output protects sensitive downstream valves and sensors, extending the lifespan of the entire hydraulic circuit and improving control accuracy.

• Servo-Drive Optimized: Specifically designed to handle the rapid acceleration and deceleration cycles of servo-motor drives, making it the ideal component for modern “Power on Demand” systems.

Application Areas

• Precision Injection Molding: Ensuring consistent part quality through stable pressure and flow control.

• Metal Forming Machinery: Powering hydraulic presses and bending machines where high-pressure holding is required.

• Testing Rigs: Providing a steady, vibration-free hydraulic power source for laboratory and industrial test stands.

Expert Maintenance Tips

• Zero-Cavitation Startup: Always fill the pump housing with clean hydraulic fluid before the first power-on. Air trapped in the internal gear pockets can lead to instantaneous surface damage under high-speed startup.

• Rigid Filtration Management: Maintain oil cleanliness at ISO 4406 18/16/13. The tight tolerances of the compensation plates are susceptible to scoring from micro-particles, which can lead to a drop in system pressure.

• Inlet Vacuum Monitoring: Ensure the suction line is unrestricted. A high vacuum at the inlet will cause cavitation, resulting in mechanical vibration and premature wear of the internal gear teeth.