Rickmeier R45/80 Electric Hydraulic Gear Pump

Rickmeier R45/80 Electric Hydraulic Gear Pump

The Rickmeier R45/80 is an external gear, positive displacement pump engineered for demanding hydrodynamic lubrication systems, booster injection, and medium-pressure hydraulic circuits. In commercial marine propulsion, offshore rigs, and heavy turbomachinery, fluid stability under fluctuating viscosities is vital. The R45/80 is built around a heavy-duty close-grain gray cast iron casing (EN-GJL-250) housing case-hardened, precision-ground alloy steel spur gears.

The Rickmeier R45/80 is an external gear, positive displacement pump engineered for demanding hydrodynamic lubrication systems, booster injection, and medium-pressure hydraulic circuits. In commercial marine propulsion, offshore rigs, and heavy turbomachinery, fluid stability under fluctuating viscosities is vital. The R45/80 is built around a heavy-duty close-grain gray cast iron casing (EN-GJL-250) housing case-hardened, precision-ground alloy steel spur gears.

Model Details:

• Manufacturer: RICKMEIER GmbH (Balve, Germany)
• Base Series: R45
• Standard Industrial MPN: R45/80 FL-Z-DB16-W-SAE2-R-SO
• Motor Coupling Type: Bellhousing & flexible drive coupling (IEC frame / DIN EN 50347 interface)
• Standard Motor Configuration: Flange-mounted IM B35 / IM B5 electric motor

Cross-Reference & OEM Interchange Matrix

• Rickmeier Part Numbers: R45/80 FL-Z, R45/80 FL-Z-DB, R45/80-FL-Z-DB16-W-SAE2-R-SO, R45/80 FL-Z-DB16-W-SAE2-R-P
• Alternative Variant Designators: R45/80 FL-Z-W (Shaft end variant), R45/80 FL-Z-DB (Integrated differential relief valve)
• OEM System References: MAN B&W Lube/Cooling Subsystems, Wärtsilä Auxiliary Pre-lube units, RENK Gearbox forced-lube packages, Flender gear units, Siemens/Voith industrial drives.

Key Features

1. High-Efficiency Volumetric Geometry: 80 cm³ / rev displacement yielding up to 116 L/min at 1,450 RPM, preserving volumetric efficiency above 90% across varied lubricating oil grades.
2. Specialized Low-Noise Gear Meshing: Precision-profiled tooth engagement suppresses pressure pulsation, fluid cavitation, and airborne acoustic emission in enclosed machinery spaces.
3. Integral Pressure Relief Valve (DB Version): Internally routed, adjustable spring-loaded bypass valve ensures system and casing overpressure protection up to 16 or 25 bar without external manifolding.
4. Advanced Sealing Options: Fitted with premium Viton/FKM radial shaft seals or single mechanical cartridge face seals (GLRD) for continuous elevated temperature resistance.
5. Low Net Positive Suction Head Required (NPSHr): Generates high vacuum for reliable cold-start oil drawing up to ISO VG 460 at cold-crank operating parameters.

Marine & Offshore Installations

• Marine Propulsion Reduction Gears: Continuous forced-feed lubrication for RENK, Reintjes, ZF Marine, and Flender marine transmission systems.
• Two-Stroke & Four-Stroke Engines: Auxiliary crosshead lube booster, turbocharger bearing pre-lubrication, and cam/crankcase priming pumps on MAN B&W, WinGD, and Wärtsilä generator engines.
• Controllable Pitch Propeller (CPP) Systems: Header tank transfer, pitch control oil supply, and stern tube bearing circulation.
• Deck Machinery: Hydraulic fluid booster and continuous cooling circuits on marine windlasses, tensioning winches, and mooring systems.

Frequently Asked Questions

Can the Rickmeier R45/80 gear pump be configured for counter-clockwise (anti-clockwise) rotation?

Yes. While standard units are configured for clockwise rotation (viewed facing the drive shaft end), rotation can be reversed. This requires reorienting the gear set and rotating the internal end covers and valve manifold according to factory guidelines to ensure the suction and pressure ports match internal bearing wash grooves.

What is the primary difference between the R45/80 FL-Z and standard R35 series gear pumps?

The R45 series features larger gear body housing dimensions, higher cubic-centimeter displacement options larger SAE 2″ flange connections, and heavy-duty shaft bearings engineered to absorb higher hydraulic shock loads in continuous industrial and marine installations.

Is the integrated relief valve adjustable while the pump is operating?

The relief valve can be adjusted under pressure by releasing the protective cap nut and tuning the threaded spindle. However, in marine high-pressure applications, adjustments should always be monitored with an accurate, calibrated pressure gauge connected to the gauge tapping port on the pump discharge side.

Does the pump require external casing drain lines?

Standard R45/80 models feature internal drain routings that bleed back to the suction cavity. For high-backpressure applications or specialized seal configurations where suction pressures exceed normal atmospheric or charge pressures, an external leakage line port can be custom specified.