Danfoss 90R075 Series Pump | 90R075KA1, 90R075KP1 | Closed Circuit Piston Pump | 90R075KA1NN80

Danfoss 90R075 Series High-Pressure Closed Circuit Variable Piston Pumps

Product Overview: The Danfoss 90 Series is the global industry benchmark for closed-circuit hydrostatic transmission systems. As a core displacement within the range, the 90R075 is specifically engineered to meet the stringent demands of mobile equipment for high efficiency, extended durability, and precise control. This series spans from the basic 90R075KA to the fully configured 90R075KA1NN80S3C6D03GBA353524. Utilizing advanced axial piston technology, the pump delivers robust and stable power at a rated pressure of 420 Bar. With superior power density and a modular control design, it is the premier choice for concrete mixer drum drives, pavers, rotary drilling rigs, and various heavy-duty construction machinery.

Key Technical Advantages:

• Heavy-Duty Closed-Loop Architecture: Optimized for high-frequency direction changes and continuous high-pressure cycles, featuring an integrated high-efficiency charge pump for smooth operation and heat reduction.

• Versatile Control Logic: Available in multiple configurations including KA (Manual/Hydraulic Control) and KP (Electric Proportional Control), allowing seamless integration with vehicle management systems for precise speed and torque regulation.

• Extreme Pressure Durability: Rated for continuous operation at 420 Bar (6090 PSI) with peak capabilities up to 480 Bar, meeting the instantaneous power demands during heavy machinery start-up and incline climbing.

• Highly Integrated Design: Built-in multi-function valve blocks (including high-pressure relief and charge valves) significantly reduce external piping, minimizing potential leakage points.

• Rugged Longevity: Constructed with high-strength cast-iron housings and reinforced bearing groups, designed specifically for long-cycle continuous operation in harsh environments.

Detailed Models & Parameters:

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

• Model Keywords: 90R075, 90R075KA, 90R075KA1, 90R075KA1NN, 90R075KP1NN80.

• Full Config Code: 90R075KA1NN80S3C6D03GBA353524.

• Displacement: 75 cm³/rev (4.58 in³/rev).

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

• Maximum Speed: Rated up to 3950 rpm.

• Target Applications: Concrete mixers, combine harvester drives, bulldozer propulsion, and heavy-duty forklifts.