Danfoss FRR Series Pump | FRR074, FRL074 | Axial Piston Variable Pump | FRR074BLS2834

Danfoss FRR & FRL Series Heavy-Duty Axial Piston Variable Pumps

Product Overview: The Danfoss FRR and FRL series are the benchmarks for high-performance axial piston variable pumps in open-circuit systems, specifically engineered to balance compact space constraints with massive power output. This series features a core displacement of 74 cm³/rev (74cc). Featured models like the FRL07488S2920NNN3S1C2A1 and FRR074BLS2834NNN3S1C2A1 integrate advanced BLS (Load Sensing with Pressure Limiting) control technology. Operating at rated pressures up to 310 Bar, these pumps are the premier choice for telehandlers, harvester auxiliary drives, forestry equipment, and diverse industrial hydraulic systems.

Key Technical Advantages:

• Efficient Load Sensing (LS) Modulation: Combined with the BLS controller, the pump adjusts displacement and pressure in real-time according to load demand, minimizing overflow losses and improving fuel efficiency.

• Superior Power-to-Weight Ratio: The ultra-compact housing design allows for installation in tight engine compartments while delivering industry-leading flow rates.

• High-Speed Operational Efficiency: Streamlined inlet designs and lightweight rotating groups permit higher rated speeds, ensuring excellent volumetric efficiency and preventing cavitation.

• Reinforced Bearing System: The internal bearing architecture is engineered to handle massive axial and radial forces, ensuring an extended service life under continuous high-pressure cycles.

• 100% Through-Drive Capability: Supports full-torque through-drive for tandem mounting of auxiliary pumps, simplifying complex multi-circuit hydraulic layouts.

Detailed Models & Parameters:

• Core Series: Danfoss FRR / FRL Series (Open Circuit).

• Model Keywords: FRR074, FRL074, FRR074BLS, FRL07488S.

• Full Config Codes: FRL07488S2920NNN3S1C2A1NAAANNNNNN, FRR074BLS2834NNN3S1C2A1NAAANNNNNN.

• Displacement: 74 cm³/rev (74cc).

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

• Rotation: R (Clockwise/CW – FRR); L (Counter-clockwise/CCW – FRL).

• Target Applications: Agricultural machinery drives, telehandlers, road cold planers, and rotary drilling rig auxiliary circuits.