890-EI-0320-RS2-C302 Eckerle Internal Gear Pump 32cc

Product Overview

The 890-EI-0320-RS2-C302 is an ECKERLE 890-EI Series high-pressure internal gear pump with a 32 cm³/rev displacement. The broader Eckerle internal-gear technology is specifically developed for demanding industrial hydraulic applications and is characterized by axial and radial gap compensation, segmented radial compensation, low noise and low pressure pulsation.

Public Eckerle-related technical documentation identifies the 890-EI-0320 configuration as a 32 cc/rev pump with 250 bar continuous operating pressure and 350 bar peak pressure. The corresponding 890-EI-0500 configuration is listed at 50 cc/rev, 250 bar continuous pressure and 300 bar maximum pressure.

Unlike conventional external gear pumps, the 890-EI architecture uses an internal gear principle. Eckerle’s official documentation highlights axial and radial clearance compensation and segmented radial compensation to maintain volumetric efficiency and control wear over the operating life. The official product description also identifies pressure pulsation of approximately 2% as a characteristic of the internal gear pump design.

This technology is particularly suitable for injection molding machines, machine tools, presses, industrial hydraulic power units and other systems where high pressure, low noise and stable hydraulic flow are important.

Our replacement units are developed around OEM installation and operating requirements and undergo 100% simulated operating-condition testing, including pressure, flow, internal leakage, noise and running stability checks.

Technical Specifications

890-EI-0320-RS2-C302

• Model: 890-EI-0320-RS2-C302
• Brand: ECKERLE
• Series: 890-EI
• Pump Type: Internal Gear Pump
• Displacement: 32 cm³/rev
• Continuous Operating Pressure: 250 bar
• Peak Pressure: 350 bar
• Control Method: Fixed / Constant Displacement
• Drive: Rotary Mechanical Drive
• Typical Application: Industrial Hydraulic Systems / Injection Molding Machinery
• Configuration: RS2
• C302: Detailed interface/configuration definition should be verified against the complete OEM ordering documentation
• Maximum Speed: Not independently confirmed from currently accessible OEM data; therefore not stated as a fixed value
• Weight: Not independently confirmed for the exact complete ordering code

The 32 cc/rev, 250 bar and 350 bar values are cross-checked against published Eckerle 890-series technical documentation.

890-EI-0500-RS2-C302

• Model: 890-EI-0500-RS2-C302
• Brand: ECKERLE
• Series: 890-EI
• Pump Type: Internal Gear Pump
• Displacement: 50 cm³/rev
• Continuous Operating Pressure: 250 bar
• Maximum Pressure: 300 bar
• Control Method: Fixed / Constant Displacement
• Drive: Rotary Mechanical Drive
• Typical Application: Industrial Hydraulic Systems / Injection Molding Machinery
• Configuration: RS2
• C302: Verify detailed interface and mechanical configuration from the complete OEM ordering code
• Maximum Speed: Not independently confirmed
• Weight: Not independently confirmed

The 50 cc/rev, 250 bar and 300 bar values are cross-checked against published 890-series technical documentation.

Key Technical Advantages

Axial and Radial Gap Compensation

Eckerle identifies axial and radial gap compensation as a key feature of its high-pressure internal gear pumps. This design helps control internal leakage and preserve volumetric performance over the operating life.

Segmented Radial Compensation

The use of segmented radial compensation is designed to manage operating clearances and reduce mechanical wear within the gear assembly.

Low Pressure Pulsation

Eckerle’s official product information specifies pressure pulsation of approximately 2% for its internal gear pump technology. Lower source pulsation helps reduce hydraulic-line vibration and improves flow stability in demanding industrial systems.

Low-Noise Operation

The Eckerle internal gear pump family is explicitly characterized by low-noise operation, making it suitable for machine tools, industrial hydraulic systems and other noise-sensitive installations.

High-Pressure Industrial Capability

Eckerle positions its EIPH internal gear pumps for demanding industrial hydraulics and identifies operation under sustained high loads with pressure levels up to the 300-bar class.

Suitable for High-Response Hydraulic Systems

Eckerle’s product portfolio includes applications such as energy-efficient variable-speed servo drives, injection molding, presses and machine tools, demonstrating the suitability of the internal-gear architecture for applications requiring stable flow and predictable hydraulic response.

Application Areas

Injection Molding Machines

The 890-EI family is strongly associated with plastic injection molding hydraulic systems. Public Techmation documentation specifically lists 890-EI pumps in injection-molding machinery and identifies their high-pressure, low-pulsation characteristics.

Industrial Hydraulic Power Units

• Central hydraulic power units
• Industrial hydraulic power packs
• High-pressure hydraulic stations

Machine Tools

Eckerle officially identifies machine tools as an application market, where low pressure pulsation and low noise are valuable for hydraulic control systems.

Hydraulic Presses

• Hydraulic presses
• Forming machinery
• Metal-processing equipment

Eckerle’s official application portfolio includes presses among its industrial hydraulic markets.

Energy and Rotating Equipment

• Turbine lubrication
• Compressor systems
• Wind-turbine gearbox lubrication
• Seal-oil systems

Eckerle’s application information identifies turbines, compressors and wind-energy gearbox lubrication among its industrial applications.

Expert Maintenance Tips

Verify the Complete Ordering Code

The 890-EI-0320-RS2-C302 and 890-EI-0500-RS2-C302 configurations have different displacements and must not be considered interchangeable simply because the housing style is similar.

Verify:

• Complete model number
• Displacement
• Rotation
• Shaft design
• Mounting flange
• Port orientation
• Seal configuration
• Mounting dimensions

Protect the Suction Circuit

Eckerle’s official hydraulic-pump operating instructions emphasize compliance with permissible inlet conditions. Excessive inlet restriction or air ingress can cause cavitation, increased noise and abnormal heat generation.

Maintain Hydraulic Cleanliness

Proper filtration and contamination control are essential for preserving the gear set, compensation components and bearing-support surfaces.

Do Not Treat Peak Pressure as Continuous Pressure

For 890-EI-0320-RS2-C302, the published technical data distinguishes 250 bar continuous pressure from 350 bar peak pressure. These values cannot be treated as equivalent.

For 890-EI-0500-RS2-C302, the published data distinguishes 250 bar continuous pressure from 300 bar maximum pressure. Actual duty cycle must remain within the applicable limits.

Remove Entrained Air After Installation

After pump replacement or commissioning, ensure that trapped air is removed from the hydraulic circuit. Entrained air can negatively affect pressure stability, noise and hydraulic response.

Check Coupling Alignment

For industrial power units and injection molding machines, verify motor-to-pump shaft alignment to minimize unwanted radial loading on the pump shaft and bearing system.