EIPC3-050RA23-10 EIPC5-080RA23-10 Eckerle Gear Pump 250bar

Product Overview

The EIPC3-050RA23-10 and EIPC5-080RA23-10 are internal gear pumps from the German Eckerle EIPC series. The EIPC3-050RA23-10 features a displacement of 50 cm³/rev, while the EIPC5-080RA23-10 delivers 80.4 cm³/rev. Both models belong to the EIPC industrial pump series—EIPC3 represents frame size 3 and EIPC5 represents frame size 5.

The EIPC series is Eckerle’s premium internal gear pump line, specifically developed for injection molding machine technology and variable-speed stationary hydraulic systems. Featuring advanced axial and radial gap compensation technology with segmented radial compensation, the pumps deliver exceptional performance at continuous pressures up to 250 bar and peak pressures up to 320 bar.

Every unit is manufactured to original equipment specifications, ensuring 100% drop-in interchangeability with genuine Eckerle EIPC series pumps without any system modifications. Each pump undergoes rigorous 100% simulated duty-cycle testing on dedicated test benches to validate pressure-flow-efficiency performance curves.

Brand Disclaimer: This product is a high-quality compatible replacement engineered for full interchangeability with Eckerle original equipment. All Eckerle brand names and model codes are referenced solely to indicate compatibility and interchangeability. This product is manufactured by an independent producer and is not an original Eckerle product.

Technical Specifications 

EIPC3-050RA23-10

• Model Code: EIPC3-050RA23-10

• Brand Series: Eckerle EIPC Series (Frame Size 3)

• Product Type: Internal Gear Pump

• Displacement: 50.0 cm³/rev

• Continuous Operating Pressure: 250 bar

• Peak Pressure: 320 bar

• Maximum Speed: 4,200 rpm

• Rotation Direction: Right-hand (Clockwise / R code)

• Shaft Type: Cylindrical shaft (A code)

• Mounting Flange: SAE B 2-bolt flange

• Hydraulic Fluid: Mineral oil HLP

• Recommended Viscosity Range: 10 – 300 mm²/s

• Operating Temperature Range: -20°C to +80°C

• Inlet Pressure: 0.8 – 2.0 bar (absolute), min. 0.6 bar for start-up

• Recommended Cleanliness Level: ISO 4406 20/18/15

• Weight: Approx. 11.5 kg

EIPC5-080RA23-10

• Model Code: EIPC5-080RA23-10

• Brand Series: Eckerle EIPC Series (Frame Size 5)

• Product Type: Internal Gear Pump

• Displacement: 80.4 cm³/rev

• Continuous Operating Pressure: 250 bar

• Peak Pressure: 320 bar

• Maximum Speed: 3,000 rpm

• Minimum Speed: 150 rpm

• Rotation Direction: Right-hand (Clockwise / R code)

• Shaft Type: 32 mm cylindrical shaft

• Mounting Flange: SAE C 2-bolt flange

• Hydraulic Fluid: Mineral oil HLP

• Recommended Viscosity Range: 10 – 300 mm²/s

• Operating Temperature Range: -20°C to +80°C

• Inlet Pressure: 0.8 – 2.0 bar (absolute)

• Recommended Cleanliness Level: ISO 4406 20/18/15

• Weight: Approx. 12.6 kg

Key Technical Advantages

1. Axial & Radial Gap Compensation – High Efficiency Across All Operating Conditions

Advanced axial and radial gap compensation technology with special material segmented radial compensation ensures optimal volumetric efficiency even at low speeds or with low-viscosity fluids.

2. Internal Gear Principle – Ultra-Low Noise & Minimal Pulsation

The unique internal gear principle delivers ultra-low noise and minimal pressure pulsation (approx. 2%) . Significantly quieter than conventional external gear pumps—ideal for noise-sensitive environments such as injection molding workshops, cab-near installations, and urban equipment.

3. High-Pressure Rating – Industrial-Grade Durability

Continuous operating pressure up to 250 bar and peak pressure up to 320 bar. Far exceeding standard gear pump pressure ratings, with precision gap compensation and high-strength materials ensuring long-term reliability under high-pressure, high-frequency, continuous-duty operations.

4. Wide Speed Range – Maximum Flexibility

EIPC5 series supports a wide speed range of 150 to 3,000 rpm; EIPC3 series reaches up to 4,200 rpm. Maintains stable flow characteristics from low-speed precision control to high-speed continuous duty—one pump for diverse application requirements.

5. Modular Design – Multi-Pump Expandability

The EIPC series supports multi-pump combinations, configurable as tandem or multiple pump assemblies with different displacements. Modular design significantly enhances system design flexibility and expandability.

6. 100% Simulated Duty-Cycle Testing

Every pump is 100% tested on dedicated hydraulic test benches under simulated real-world operating conditions—validating pressure-flow characteristics and efficiency curves at continuous pressure (250 bar), peak pressure (320 bar), and full speed range—ensuring zero-defect, plug-and-play performance upon installation.

Application Areas

• Injection Molding Machines: Servo hydraulic systems, energy-efficient oil pump systems

• Pressure Die Casting Machines: High-pressure hydraulic systems

• Forging Machinery: Forging hydraulic systems

• Servo-Driven Stationary Hydraulic Systems: Variable-speed drives, energy-efficient hydraulics

• Industrial High-Pressure Machinery: Forming machines, servo hydraulic energy-saving systems

• Elevators: Hydraulic elevator systems

• Mobile Hydraulics & Automotive: Mobile and automotive applications

Expert Maintenance Tips

1. Fluid Cleanliness Control

Internal gear pumps are highly sensitive to fluid contamination. Maintain system fluid cleanliness to ISO 4406 20/18/15 or better. Install a ≤10 μm absolute filtration filter upstream of the inlet port to prevent particle contamination from damaging precision gap compensation components and gear pairs.

2. Inlet Line Requirements

Keep suction lines short and straight with adequate diameter—not less than the port size. Inlet pressure must be maintained between 0.8 – 2.0 bar (absolute) , with minimum 0.6 bar for start-up. Recommended suction line flow velocity: ≤1.5 m/s to prevent cavitation from excessive inlet resistance.

3. Coupling Alignment Precision

Ensure pump shaft-to-drive shaft coaxiality deviation ≤0.05 mm and angular deviation ≤0.5° during installation. Flexible couplings are strongly recommended. If the drive involves sprockets or V-belt pulleys, an independent outboard bearing MUST be installed to protect pump shaft bearings.

4. First-Start Priming Procedure

Before initial startup, prime the pump by bleeding air through the drain port or a loosened outlet fitting. Perform 2–3 jog starts with the outlet open (no load) until oil fills the pump cavity without air bubbles, then connect the load circuit for full operation.

5. Viscosity & Temperature Monitoring

Recommended operating viscosity: 10 – 300 mm²/s. Maximum starting viscosity: 2,000 mm²/s. Recommended operating temperature range: -20°C to +80°C. During cold starts when viscosity exceeds the recommended range, ensure adequate suction conditions or preheat the fluid.

6. Rotation Direction Confirmation

The R in the model code indicates right-hand (clockwise) rotation. Always verify that the drive motor/engine rotation matches the pump before installation. Specify left-hand configuration when ordering if required.