ECKERLE internal gear pump
6 month ago
Product details
ECKERLE Internal Gear Pumps
As a renowned German manufacturer of hydraulic components,ECKERLEis celebrated for itsinternal gear pumps, which are distinguished by their high efficiency, reliability, low noise, and extended service life. These pumps are widely applied in industrial hydraulics, construction machinery, aerospace, and other fields. Below is an overview of their technical features, applications, and representative models:
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I. Core Technical Features
1. Dual Compensation Pressure Design
• Radial Compensation: Utilizes a two-piece eccentric clearance structure. Under high-pressure oil action, the gear automatically adjusts its position to maintain optimal tooth-tip clearance with the pump body, minimizing high-pressure leakage and enhancing volumetric efficiency.
• Axial Compensation: The end cover and gear end face incorporate a clearance compensation mechanism. High-pressure oil pushes the end cover tightly against the gear end face, eliminating axial clearance and further reducing internal leakage.
• Performance: Achieves volumetric efficiency ≥92% (up to 98% for some models) across a pressure range of0.3–16 MPa.
2. Low Pulsation & High Stability
• Smooth volume changes during gear meshing ensure a flow pulsation rate of±2%or less, with minimal pressure fluctuations for stable mechanical operation.
• The 90° arrangement of suction and pressure ports optimizes fluid paths, reducing turbulence.
3. Long Lifespan & Low Noise
• Gears feature adouble-circular-arc sinusoidal tooth profile, eliminating sliding during meshing to minimize wear and ensure balanced operation. Noise levels remain below66 dB(tested value).
• Pump bodies are constructed from high-strength cast iron or aluminum alloy, with critical components (e.g., bearings) using copper-based alloy and steel-back composite structures. This supports high speeds (main shaft up to3,000 rpm) and elevated temperatures (operating oil range:-20°C to +80°C).
4. Sealing & Protection
• Triple-layer protection:
• Shaft seal: Fluororubber-reinforced oil seals.
• End cover: O-ring static seals.
• Drain port: Labyrinth-type sealing structure.
• AchievesIP65protection rating.
• Some models include standard temperature-pressure composite sensor interfaces withCANopenbus support for real-time parameter transmission.
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II. Typical Applications
1. Industrial Hydraulic Systems
• High-pressure hydraulic machinery such as injection molding machines, forming presses, and servo energy-saving systems rely on their low pulsation and high-pressure stability for precise control.
• Used in steel industry hydraulic drives to enhance efficiency and equipment longevity.
2. Construction Machinery
• High-pressure hydraulic systems in shearing machines, bending machines, and punching machines leverage radial/axial pressure compensation for harsh operating conditions.
• Ideal for mobile equipment like forklifts and engineering vehicles requiring lightweight, high-efficiency hydraulic power.
3. Specialized Environments
• Corrosion resistance: Nickel-based alloy gear sets for petrochemical applications.
• Low-temperature startup: Pre-heating devices for operation at-30°C.
• High cleanliness: Paired with Beta10=75 high-pressure filters featuring contamination monitoring.
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III. Representative Models & Specifications
Example: EIPH2 Series
• Displacement range: 3.5 cc/rev – 25.2 cc/rev
• Pressure ratings:
• Peak pressure:400 bar
• Continuous pressure:330 bar
• Port configuration: SAE flange standard1-1/4"interface, compatible with ISO VG32–VG68 hydraulic oils.
• Mounting options: Supports ISO3019-2 standardB5orB14flange installation.
• Certification & lifespan: MeetsISO4409:2019volumetric pump performance standards, with an averageMTBF (Mean Time Between Failures)of25,000 hours.
Other series, such asEIPC3andEIPS2, are optimized for varying pressure levels (e.g.,EIPS2 up to 400 bar) and displacement ranges (multi-stage displacements from004–025 cm³), covering a broad spectrum of applications.
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