Danfoss LRR & KRR Series Pump | KRR045, LRR030, KRR038 | LRL/KRL | DLS Compensating Valve |

Danfoss LRR & KRR Series Variable Piston Pumps & DLS Compensating Valves

Product Overview: The Danfoss LRR, KRR, LRL, and KRL series are high-efficiency, compact axial piston variable pumps developed for open-circuit hydraulic systems. Renowned for their exceptional power-to-weight ratio and versatile control logic, this series is widely utilized in industrial power units, agricultural machinery, and auxiliary circuits of mobile equipment. The range covers displacements from 25cc (LRR025) to 45cc (KRR045). Featured models like the KRR045DLS212, equipped with the DLS (Load Sensing Pressure Compensator), deliver unmatched stability. Its precision compensation technology ensures that power is only delivered when required, significantly boosting energy efficiency and minimizing system heat.

Key Technical Advantages:

• Intelligent DLS Load Sensing: The KRR045DLS212 compensating valve features high-sensitivity Load Sensing (LS) and pressure cut-off functions, automatically modulating pump displacement based on actual demand.

• High-Reliability Swashplate Design: Utilizes an optimized axial piston swashplate architecture, providing peak volumetric efficiency under rated pressures while effectively suppressing operational noise.

• Flexible Rotation & Mounting: Available in LRR/KRR (Clockwise) and LRL/KRL (Counter-clockwise) rotations, supporting multiple SAE interface standards for versatile layout in various mechanical structures.

• Rugged Industrial Engineering: The pump body is constructed from high-strength materials and equipped with long-life bearing groups, capable of withstanding high-pressure fluctuations and mechanical vibrations in harsh environments.

• Ease of Maintenance: Control valves (such as the DLS series) feature a modular design, allowing for easy field pressure adjustment or rapid component replacement.

Detailed Models & Parameters:

• Core Series: Danfoss LRR, KRR, LRL, KRL Series.

• Model Keywords: LRR025, LRR030, KRR038, KRR045, LRL025, LRL030, KRL038, KRL045.

• Core Component: KRR045DLS212 Compensating Valve.

• Displacements: 25 cm³/rev, 30 cm³/rev, 38 cm³/rev, 45 cm³/rev.

• Pressure Ratings: Rated at 210 Bar (3045 PSI) continuous; Peak capability up to 315 Bar (4570 PSI).

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

• Target Applications: Industrial HPU (Hydraulic Power Units), tractor hydraulics, forklift lift circuits, and compact construction machinery.