Danfoss 90 Series Pump | 90R030, 90R055, 90R075, 90R100, 90R130 | 90L Series | Closed Circuit Piston Pump

Danfoss Series 90 Heavy-Duty Closed Circuit Axial Piston Pumps

Product Overview: The Danfoss Series 90 axial piston variable displacement pumps are the global performance benchmark for hydrostatic transmissions (HST). Engineered specifically for closed-circuit hydraulic systems, this series spans a full displacement portfolio from the compact 30cc (90R030) to the heavy-duty 130cc (90R130). Renowned for their “High Power Density” and “Extreme Reliability,” Series 90 pumps provide smooth, infinitely variable speed and seamless direction reversal at continuous operating pressures up to 420 Bar. They serve as the vital core for travel drives in road rollers, harvesters, pavers, and diverse large-scale mobile machinery.

Key Technical Advantages:

• Heavy-Duty High-Pressure Ratings: Rated at 420 Bar (6000 PSI) continuous; peak capability up to 480 Bar (7000 PSI). Reinforced rotating groups and heavy-duty bearings ensure extended life under extreme loads.

• Fully Integrated Closed-Loop Solution: The highly integrated design includes built-in charge pumps, high-pressure relief valves, charge relief valves, and various control valve manifolds, simplifying system layouts.

• Versatile Control Logic: Supports multiple modes including MDC (Manual Displacement Control), EDC (Electric Displacement Control), and HD (Hydraulic Displacement Control) for precise operational requirements.

• Comprehensive Displacement Matrix: Covers sizes 30, 42, 55, 75, 100, and 130, allowing for perfect matching with the horsepower requirements of different machines.

• Standardized Global Compatibility: Strictly adheres to SAE mounting standards, ensuring splined/keyed shafts and flanges align perfectly for a 100% “drop-in” replacement.

Detailed Models & Parameters:

• Core Series: Danfoss Sauer Series 90 (Closed Circuit).

• Model Keywords: 90R030, 90R042, 90R055, 90R075, 90R100, 90R130 (Right-hand rotation); 90L030, 90L042, 90L055, 90L075 (Left-hand rotation).

• Pressure Ratings: Rated at 420 Bar (6000 PSI); Peak capability up to 480 Bar.

• Control Types: MDC, EDC, HD, NF (Non-Feedback).

• Target Applications: Vibratory rollers, asphalt pavers, combine harvesters, concrete mixers, and large excavator travel drives.