Danfoss ER Series Pump | ER-L-100B, ER-L-147C | High Pressure Load Sensing Piston Pump

Danfoss ER Series High-Pressure Load Sensing Axial Piston Pump

Product Overview: The Danfoss ER series is a high-performance axial piston variable displacement pump engineered for extreme heavy-duty and high-efficiency requirements. As the primary power source for large mobile machinery and industrial systems, the ER series covers key displacements from 100cc (ER-L-100B) to 147cc (ER-L-147C). Its primary advantage lies in the sophisticated Load Sensing (LS) control system, which senses load pressure in real-time and delivers only the required flow—drastically reducing thermal generation and optimizing fuel economy. Models like the ER-L-147C-LS-26… are specifically built to meet the grueling power demands of large excavators, heavy forestry equipment, and high-pressure hydraulic power units.

Key Technical Advantages:

• Intelligent Load Sensing (LS) Control: Features high-performance LS compensators that ensure precise flow distribution during synchronized multi-actuator movements while eliminating parasitic energy loss.

• Ultra-High Pressure Reliability: Designed for continuous high-pressure duty cycles, with rated pressures exceeding 310 Bar (4500 PSI) and peak capabilities up to 400 Bar, ensuring structural integrity under extreme stress.

• Superior Self-Priming & High-Speed Performance: Optimized inlet flow paths and rotating groups maintain stable volumetric efficiency even at high RPMs or in cold-start conditions, effectively preventing pump cavitation.

• Heavy-Duty Bearing Architecture: Reinforced bearing systems are built to withstand continuous axial and radial loads, significantly extending service intervals in 24/7 operational environments.

• Precision Industrial Configurations (Smart Codes):

  • K5NL / S2NL Specs: Represent customized shaft ends, mounting flanges (SAE standards), and seal options tailored for global OEM compatibility, ensuring 100% “plug-and-play” replacement.

Detailed Models & Parameters:

• Core Series: Danfoss ER Series.

• Representative Models: ER-L-100B-LS-25-20-NN-N-3-K5NL-A1N-AAA-NNN-NNN, ER-L-147C-LS-26-20-NN-N-3-S2NL-A1N-NNN-NNN-NNN.

• Displacements: 100 cm³/rev (ER100) / 147 cm³/rev (ER147).

• Control Type: LS (Load Sensing).

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