IGP6-M080-SF-3 Internal Gear Pump 80cc 280bar Low Noise

Product Overview

The IGP6-M080-SF-3 is a high-pressure internal gear pump from the IGP6 series, size 080, with a nominal displacement of 80.7 mL/rev. It is a fixed displacement pump featuring a straight-tooth conjugate internal gear design. The IGP6 series covers a displacement range of 64.1 to 126.2 cm³/rev, including sizes M064, M080, M100, and M125. At 1500 rpm, the pump delivers 121.0 L/min with a rated working pressure of 280 bar and peak pressure of 315 bar.

The pump’s core technology lies in its axial and radial bidirectional gap pressure compensation. In the axial direction, pressure fields behind the front and rear side plates balance against the displacement chamber pressure, creating a perfect seal with minimal mechanical losses. In the radial direction, the crescent side plate and crescent main plate achieve automatic clearance adjustment via a plastic locating rod, maintaining high volumetric efficiency even at low speeds and low viscosities. Optimized load distribution combined with special friction bearings enables continuous duty at high pressures with extended pump lifetime. The IGP6 series is insensitive to oil contamination, with strong anti-contamination capability suitable for demanding operating conditions.

Manufactured to original equipment specifications, the mounting flange and port layout are compatible with Duplomatic and other brand IGP6 series pumps of the same specification, allowing direct replacement without piping or coupling modification. Every unit undergoes 100% simulated operating condition testing before shipment, covering rated pressure loading, volumetric efficiency verification, and housing sealing integrity.

Technical Specifications 

• Model: IGP6-M080-SF-3

• Series: IGP6 Series

• Pump Type: Internal gear pump, fixed displacement, with axial and radial gap pressure compensation

• Nominal Displacement: 80.7 mL/rev

• Rated Working Pressure: 280 bar

• Peak Pressure: 315 bar

• Minimum Speed: 400 rpm

• Maximum Speed: 2,400 rpm

• Theoretical Flow at 1500 rpm: 121.0 L/min

• Mounting Flange: SAE 2-hole flange, ISO 3019-1

• Port Connection: SAE J518 Code 61 flange connection

• Rotation Direction: Clockwise or counter-clockwise (specified at order)

• Housing Material: High-strength cast iron

• Weight (single pump): Approx. 29.2–35 kg (IGP6 series)

• Front Shaft Seal Material: Viton (FKM)

• Recommended Fluid Viscosity: 25–100 cSt

• Fluid Temperature Range: -10 °C to +80 °C

• Ambient Temperature Range: -10 °C to +60 °C

• Fluid Cleanliness Requirement: ISO 4406 Class 20/18/15

Key Technical Advantages

1. Axial and Radial Bidirectional Gap Pressure Compensation: The IGP6-M080-SF-3’s core technical advantage is its bidirectional gap compensation system. Axially, pressure fields behind the front and rear side plates balance against the displacement chamber pressure, creating a perfect seal with minimal mechanical losses. Radially, the crescent side plate and main plate achieve automatic clearance adjustment via a plastic locating rod. This design maintains high volumetric efficiency even at low speeds (400 rpm) and low viscosities, overcoming the limitations of conventional gear pumps.

2. Ultra-Low Noise Operation: The internal gear pump features a straight-tooth conjugate profile with a long meshing length that effectively reduces flow and pressure pulsation. Audio characteristics remain smooth even at high speeds, with noise levels among the lowest in industrial hydraulic pumps. This makes it particularly suitable for injection molding machines, servo pump systems, and applications with strict noise requirements.

3. High Contamination Tolerance and Long Service Life: The IGP6 series is insensitive to oil cleanliness with strong anti-contamination capability. Special friction bearings and optimized load distribution enable continuous duty at high pressures, significantly extending service life. The optimized load distribution and special wear-resistant bearings allow the pump to maintain stable long-term operation at 280 bar continuous working pressure.

4. Compact High-Power-Density Design: High-strength cast iron housing ensures high-pressure, high-speed capability and instantaneous starting performance. The IGP6 series single pump weighs 29.2–35 kg, delivering 280 bar rated pressure and 121.0 L/min flow output at 80.7 mL/rev displacement, with an excellent power-to-weight ratio.

5. Multi-Pump Combination Flexibility: IGP series pumps can be combined to form multi-flow groups suitable for multi-circuit hydraulic systems, enabling flexible configuration according to system requirements while reducing piping connections and installation space.

Application Areas

• Injection Molding Servo Pump Systems: IGP6-M080-SF series widely used in servo-driven injection molding machines for energy-efficient operation

• Plastic Processing Machinery: Injection molding machines, extruders, blow molding machines

• Forging Equipment: Automated presses, stamping machines, bending machines

• Foundry Equipment: Die-casting machines, foundry machinery hydraulic drives

• Accumulator Charging Systems: Stable flow output for accumulator charging applications

• Industrial Hydraulic Systems: Various industrial equipment requiring low-noise, high-pressure hydraulic power

• Machine Tool Equipment: CNC machine tools, machining center hydraulic power units

• Petrochemical Machinery: Petrochemical machinery hydraulic systems

Expert Maintenance Tips

1. Shaft Alignment and Flange Connection: Concentricity deviation between the pump and drive shaft must be less than 0.05 mm, with angular deviation less than 0.25°. The IGP6 series uses an SAE 2-hole flange (ISO 3019-1) with SAE J518 Code 61 flange port connections. Tighten flange bolts in diagonal sequence for even loading.

2. Initial Start-Up Filling and Bleeding: Pre-fill the pump housing with clean hydraulic fluid through the drain port before installation. Start at the lowest speed of 400 rpm and observe a steady oil flow from the case drain port free of bubbles. Once bleeding is complete, gradually increase to working pressure. Note that the minimum speed for the IGP6 series is 400 rpm.

3. Fluid Cleanliness and Viscosity Management: Use L-HM 32/46 anti-wear hydraulic oil with a viscosity range of 25–100 cSt and fluid temperature of -10 °C to +80 °C. Fluid cleanliness should meet ISO 4406 Class 20/18/15. Although the IGP6 series has strong contamination tolerance, maintaining fluid cleanliness remains critical for extended pump life. Replace hydraulic fluid and filter elements every 1,000 operating hours or annually.

4. Gap Compensation System Inspection: Axial and radial gap compensation is the core technology of this pump. During maintenance, inspect the front and rear side plates (axial compensation) and the crescent side plate and main plate (radial compensation) for wear. The plastic locating rod is a critical component of the radial compensation — replace if worn or deformed.

5. Multi-Pump Combination Installation: When combining the IGP6-M080-SF-3 with other IGP series pumps into a multi-flow group, ensure proper coupling alignment between pumps and verify that the combined drive torque does not exceed the front pump shaft’s load capacity. Consult factory technical support for combination configuration confirmation.

6. Extended Shutdown Protection: For equipment idle longer than 30 days, start the pump once per month and run unloaded for 10 minutes to prevent oil film breakdown on gear meshing surfaces.