Danfoss FRR & FRL Series Pump | FRR074, FRL090 | 45 Series Load Sensing Pump

Danfoss 45 Series FRR & FRL Axial Piston Variable Pump

Product Overview: The Danfoss 45 series (including FRR and FRL configurations) is a premier range of axial piston variable pumps designed for medium-to-high pressure open-circuit applications. As a leader in mobile hydraulics, the 45 series covers critical displacements like 74cc (074) and 90cc (090). Renowned for their exceptional power-to-weight ratio and versatile control options such as LS (Load Sensing), these pumps significantly reduce system heat and fuel consumption. Models like the FRL074B and FRR074-B provide stable, high-efficiency power for your machinery.

Key Technical Advantages:

• Precision Load Sensing (LS) Control: Models like FRL074B-LS feature an advanced load-sensing compensator that ensures pump flow output exactly matches the demand of the actuator, maximizing system efficiency and extending hydraulic fluid life.

• Robust Medium-Pressure Reliability: Specifically engineered for the fluctuating loads of construction and agricultural machinery. With a rated pressure of 310 Bar (4500 PSI) and peaks up to 400 Bar, it achieves heavy-duty performance in a lightweight package.

• Flexible Thru-Drive Configurations: Superior thru-drive capability indicated by codes such as A1N or 3S2B allows for tandem mounting of secondary pumps, streamlining multi-circuit power distribution layouts.

• Low Pulsation & Quiet Operation: Optimized valve plate geometry effectively smooths out pressure pulsations, maintaining a quiet work environment even at higher displacements like 90cc.

Detailed Models & Parameters:

• Core Series: Danfoss 45 Series (FRR / FRL).

• Representative Models: FRL074B-LS-25-20-NN-3-K4N2-A1N-NNNN, FRR074-BLS2618-NNN-3S2B2A1-NN.

• Displacements: 74 cm³/rev (074), 90 cm³/rev (090).

• Pressure Ratings: Rated at 310 Bar (4500 PSI); Peak cycles up to 400 Bar (5800 PSI).

• Control Methods: LS (Load Sensing), PC (Pressure Compensator).