JRR075CLS2120NNN3C3N2A8NNNNNN Danfoss Series 45 Pump 75cc 310bar

Product Overview

The JRR075 / JRL075 / JRL060 series (examples: JRR075CLS2120NNN3C3N2A8NNNNNN and JRL060BBS3226NNN3T0C2A2NNNNNN) is a Danfoss (formerly Sauer-Danfoss) Series 45 Frame J open-circuit axial piston variable-displacement pump. Flow is infinitely variable and proportional to drive speed and swashplate angle. The unit offers 100% drop-in interchangeability with genuine Danfoss pumps—no piping or mounting modifications required. Every unit undergoes full simulated operating-condition testing to guarantee high volumetric efficiency and reliability under medium-to-high pressure and variable speed.

Technical Specifications 

• Model: JRR075 / JRL075 / JRL060 (examples: JRR075CLS2120NNN3C3N2A8NNNNNN, JRL060BBS3226NNN3T0C2A2NNNNNN)
• Geometric displacement: JRR075 / JRL075 = 75 cm³/rev; JRL060 = 60 cm³/rev
• Continuous operating pressure: 260–310 bar (typical 260 bar for S75C)
• Peak pressure: 350–400 bar
• Maximum speed: approx. 2400–2800 rpm (Frame J 75 cc range)
• Minimum speed: 500 rpm
• Control options: Pressure compensated / load sensing (LS/PC common; code indicates specific type such as LS or BS); torque limiter and displacement limiter available
• Weight (approx.): 23–27 kg (axial or radial port configurations)
• Design features: Open circuit, swashplate design, SAE flanges and multiple shaft options, optional through-drive or auxiliary pump

Key Technical Advantages

1. Precision-machined swashplate and rotary group deliver high volumetric efficiency and low internal leakage, with flow precisely proportional to speed and swashplate angle.
2. Stable performance in the medium-to-high pressure range (continuous up to 310 bar) combined with load-sensing control for low energy consumption and fast response.
3. Frame J optimised design balances power density and compact size, supporting a wide range of shafts, flanges and port configurations for single or tandem installation.
4. Long-life bearings and wear-resistant materials, with optional Viton seals and modular controls, enhance reliability in demanding mobile applications.
5. 100% interchangeability plus full operating-condition testing ensures exact match of mounting dimensions, ports and control characteristics with original Danfoss Series 45 units, minimising downtime.

Application Areas

Designed for open-circuit working hydraulic systems in high-power wheeled tractors (Case IH, New Holland, John Deere, Fendt, Claas), combine harvesters, rollers, pavers, milling machines (Wirtgen, Vögele, Hamm), forestry equipment, loaders, backhoe loaders and other mobile machinery requiring variable flow for work functions or auxiliary circuits.

Expert Maintenance Tips

1. Before installation, verify rotation direction (R = clockwise, L = counterclockwise) and shaft spline match; ensure precise flange alignment and avoid radial or axial overloads.
2. Fully bleed the system before first start-up. Use hydraulic fluid meeting ISO 4406 18/16/13 cleanliness or better; viscosity and temperature must suit the application.
3. Periodically monitor case temperature, leakage and control settings (pressure compensator / load-sensing valve); maintain adequate inlet pressure to prevent cavitation.
4. When changing filters and oil, inspect the swashplate, pistons and valve plate for wear. Perform preventive maintenance at the end of design life or when flow decreases to maximise hydraulic-system longevity.