The R25/20 FL-Z-DB4-W-SAE1-R-SO is an external gear pump from RICKMEIER's R25 series in Germany, specifically designed for conveying high-viscosity media such as lubricating oils and fuels. Its core advantage lies in its modular three-part housing structure, which supports flexible customization of interfaces and functions (such as the integration of pressure relief valves), making it suitable for medium- to low-pressure applications in industrial lubrication and hydraulic systems.
Item Number: 330489-6
Core Features
High Strength and Durability
Material: Gray cast iron housing (EN-GJL-250/GG-25) paired with hardened surface-carburized steel gears (16MnCrS5), offering wear and corrosion resistance.
Bearings: Composite plain bearings (P10/DU type) support brief dry running and have a long service life.
Seals: Standard NBR radial shaft seals (temperature-resistant from -25°C to 80°C), with optional FKM fluororubber or PTFE mechanical seals (resistant to high temperatures up to 150°C).
High-Efficiency Fluid Performance
Flow and Pressure: Maximum operating pressure of 25 bar, rotational speed range of 950–3,600 rpm, achieving a flow rate of up to 29.6 L/min at 1,450 rpm, suitable for medium- to high-flow requirements.
Low-Noise Design: Optimized gear meshing and fluid channels result in operation noise levels as low as 54–59 dB(A).
Self-Venting Capability: Automatically evacuates gas from the suction line, reducing the risk of cavitation.
Modular and Safety Configurations
Integrated Pressure Relief Valve (DB4): Automatically relieves pressure when it exceeds 4 bar, protecting the pump body and pipeline.
Interface Compatibility: SAE1 flange adapts to standard hydraulic pipelines and supports customization with metric threads (such as G1).
Explosion-Proof Certification: Complies with ATEX 2014/34/EU and EAC Ex, making it suitable for use in flammable environments such as mines and chemical plants.