Danfoss 90R Series Pump | 90R55, 90R75, 90R100, 90R130 | Road Roller Piston Pump | 90R180, 90R250

Danfoss 90R Series High-Pressure Variable Piston Pumps for Road Rollers

Product Overview: The Danfoss 90 Series is a globally recognized benchmark in hydrostatic transmission technology, delivering exceptional performance in Road Roller, paver, and skid steer loader drive systems. This comprehensive range covers displacements from the compact 55cc (90R55) to the massive 250cc (90R250). Featuring an advanced closed-circuit design, the 90R series integrates charge pumps, pressure relief valves, and sophisticated control modalities. Its rugged swashplate architecture ensures an ultra-long service life under the high-frequency reversals and continuous vibration characteristic of road compaction tasks, making it the premier power source for high-performance mobile machinery.

Key Technical Advantages:

• Optimized for Compaction Machinery: Specifically tuned for smooth road roller starting characteristics and vibratory motor drives, providing superior operational precision.

• Extreme Power Density: Delivers working pressures up to 420 Bar within a compact frame, ensuring robust tractive effort for rollers on steep grades and complex terrains.

• Integrated Closed-Loop Design: Built-in high-performance charge pump simplifies external hydraulic plumbing, effectively reducing potential system leakage points.

• Versatile Control Modalities: Supports MDC (Manual Displacement Control), EDC (Electric Displacement Control), and HD (Hydraulic Displacement Control) for seamless integration with automated construction systems.

• Industrial Durability: Utilizing high-hardness swashplates and reinforced bearing groups, the 90R is engineered for 10,000-hour-class operation in dusty, high-temperature, and high-vibration environments.

Detailed Models & Parameters:

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

• Full Range Models: 90R55, 90R75, 90R100, 90R130, 90R180, 90R250.

• Control Types: MDC, EDC, HD, FNR (Electric Forward-Neutral-Reverse).

• Displacements: 55 cm³/rev to 250 cm³/rev.

• Pressure Ratings: Rated at 420 Bar (6090 PSI) continuous; Peak capability up to 480 Bar (7000 PSI).

• Target Applications: Tandem roller travel and vibration systems, single drum soil compactors, and asphalt paver drives.