Eckerle EIPC3-063RA26-10 High Pressure Internal Gear Pump | EIPC EIPH

Genlu Hydraulic excels as an elite-tier global developer and precision manufacturer of heavy-duty industrial high-pressure internal gear pumps, dedicated servo hydraulic power sources, and premium B2B fluid control manifold assemblies. The EIPC3-063RA26-10 High-Pressure Internal Gear Pump—engineered to deliver a premium 100% drop-in interchangeable alternative to Germany’s renowned Eckerle product standards, specifically encompassing the EIPC2, EIPC3, EIPC5, EIPC6 series and the ultra-high-pressure EIPH2, EIPH3 platforms—presents a highly responsive, heavy-duty solution optimized for modern high-precision industrial automation. Incorporating a state-of-the-art dual-axis clearance compensation matrix combined with a straight-line conjugate tooth geometry, this series has established itself globally as the definitive premium fluid-power hardware for energy-efficient, low-noise servo-driven hydraulic architectures, such as modern injection molding systems and advanced CNC press brakes.

In smart servo-hydraulic networks, gear pumps are subjected to demanding operational cycles characterized by prolonged near-zero RPM pressure-holding states, rapid acceleration-deceleration sequences, and consistent load profiles up to 25 MPa. Substandard aftermarket gear pumps lacking active micro-clearance tracking suffer from exponential internal volumetric slip during pressure-holding cycles. This resulting leakage generates excessive system heat and lowers low-speed volumetric efficiency, making it impossible to hold stable system pressure. Genlu’s premium EIPC3-063RA26-10 replacement pumps are reverse-engineered to match the exact hydrodynamic seal force balancing, multi-layer segment sealing, and specialized friction-pair metallurgy specified in official Eckerle technical documentation. Whether assessing the standard SAE-B 2-bolt mounting interface, the rigid straight keyed drive shaft, or the exact high-pressure flange port orientations, our assemblies ensure 100% mechanical and functional drop-in interchangeability. Prior to delivery, each servo pump undergoes 100% Full-Simulation Condition Testing on dynamic servo test beds to verify volumetric delivery, noise thresholds, and step-response frequencies under pressure, ensuring seamless software and hardware integration.

Technical Specifications 

• Product Pump Classification: EIPC3 Series High-Pressure Straight-Line Conjugate Internal Hydraulic Gear Pump

• Complete Cross-Reference Model Code: EIPC3-063RA26-10

• Platform Compatibility Horizon: Broad cross-compatibility with EIPC2, EIPC3, EIPC5, EIPC6, and EIPH2/EIPH3 series

• Nominal Geometric Displacement: 63.8 $cc/rev$

• Maximum Continuous Operating Pressure: 25.0 MPa (250 bar / 3625 PSI)

• Maximum Intermittent Peak Pressure Threshold: Up to 31.5 MPa (315 bar / 4568 PSI) during transient system peaks

• Maximum Permissible Operational Speed: 3000 RPM

• Minimum Continuous Operational Speed: Supports near-zero RPM states during sustained high-pressure servo holding cycles

• Theoretical Flow Output Delivery: Yields approximately 95.7 $L/min$ when operating at a baseline of 1500 RPM

• Drive Mechanical Rotation Orientation: R — Right-Hand (Clockwise, CW from the shaft end view)

• Mounting Flange Specification standard: A26 — Standard SAE-B 2-bolt mounting arrangement

• Drive Shaft Output Geometry: Standard straight cylindrical keyed shaft (Involute splined options available upon request)

• Total Pump Assembly Net Dry Weight: Approximately 16.5 kg (High-density, rigid cast iron structural shell)

Key Technical Advantages:

• Active Hydraulic Multi-Stage Radial and Axial Clearance Compensation: The core pump matrix consists of a central pinion gear, a multi-piece crescent support element, and an outer ring gear. The crescent element integrates a two-piece segmented radial sealing mechanism energized by internal high-pressure fluid to track the gear tips. This dynamic compensation maintains tight clearances under 25 MPa loads, restricting volumetric slip and keeping efficiency above 95% at low speeds.

• Straight-Line Conjugate Tooth Profiles for Exceptionally Quiet Operation: The internal gear pair features a precision-ground straight-line conjugate profile rather than a standard involute shape. This geometry eliminates relative sliding between teeth during mesh, removing fluid-trapping phenomena and minimizing pressure ripple below 2%. Under heavy load profiles, noise output remains below 65 dB(A), meeting stringent modern factory acoustic standards.

• Low-Friction Metallurgical Matrices with Advanced Surface Hardening: The internal ring and external pinion shaft are machined from premium alloy steel, vacuum carburized, quenched, and nano-ground. The crescent elements and axial side plates utilize a specialized self-lubricating powder metallurgy matrix with a low thermal expansion coefficient. This configuration prevents adhesive scoring during rapid acceleration cycles, eliminating surface pitting.

• Rigid Thru-Shaft Drive Structural Design for Tandem Configuration Support: The central pinion shaft is forged as a rigid, singlepiece component. An optional rear thru-shaft splined coupling allows operators to direct-mount a secondary pump (such as an EIPC2, EIPC3, or external gear pump) in tandem. This high-torque thru-drive maintains strict concentricity, saving axial space within the servo motor enclosure.

Application Areas:

• High-End Automated Plastic Injection Molding Machinery: Main power engine driving high-frequency mold clamping, high-pressure holding cycles, and material injection functions.

• Precision CNC Hydraulic Press Brakes & Structural Metal Shears: Supply systems demanding rapid dynamic pressure response and precise micro-positioning capabilities.

• Energy-Efficient Servo Hydraulic Power Units: Powering specialized manufacturing machinery including die-casting systems, rubber presses, and industrial automation blocks.

Expert Maintenance Tips:

• Cavitation Prevention and Intake Vacuum Control Under High Acceleration: In servo-driven setups, the EIPC3-063RA26-10 can accelerate from 0 to 2000 RPM in milliseconds. This high acceleration demands a properly sized inlet line to prevent starvation. The suction hose must have an inner diameter of at least 40mm, and restrictive mesh suction strainers should be avoided (use a coarse 100-mesh element or move filtration to the pressure line) to prevent vacuum cavitation damage.

• Mandatory Pre-Commissioning Bleeding and Pressure-Holding Initialization Rules: Internal gear pumps are highly sensitive to trapped air within their sealing boundaries. Before initial startup, fill the pump housing with clean oil through the discharge port. During the first run, crack open an air bleed valve or loosen the discharge flange under zero-load conditions until the escaping fluid is free of aeration. Trapped air pockets can cause dieseling under 25 MPa loads, damaging internal components.

• Strict Cleanliness Maintenance and Fluid Analysis Intervals: The close clearances within conjugate internal gear pumps require a clean operating medium. The system oil must be maintained at a cleanliness level of NAS Grade 7 (ISO 16/13) or better. Fine particulate contamination can cause the radial sealing blocks in the crescent to bind, increasing internal slip. Use high-efficiency pressure filtration and test the fluid condition semi-annually.