Danfoss 90L Series Pump | 90L055, 90L075, 90L130 | Closed Circuit Hydrostatic Pump

Danfoss 90L Series Heavy-Duty Closed Circuit Axial Piston Pump

Product Overview: The Danfoss (formerly Sauer-Danfoss) 90 series is the global benchmark for hydrostatic transmission systems in mobile machinery. The 90L series, specifically engineered for Counter-clockwise (Left-hand) rotation, covers displacements from 55cc (90L055) and 75cc (90L075) up to 130cc (90L130). Renowned for their extreme power density and stability under pressures up to 480 Bar, these pumps feature integrated charge pumps and precision control logics such as KA (Electrical) and HF/KN (Servo), ensuring precise movement and operation for heavy equipment in challenging environments.

Key Technical Advantages:

• Flagship for Closed Circuit Systems: Built for demanding 24/7 high-load duty cycles. Rated at 420 Bar (6090 PSI) with peak capabilities reaching 480 Bar (6960 PSI), effortlessly handling rapid reversal and peak shock loads.

• Highly Integrated Multi-Functional Design: Includes integrated high-pressure relief valves, charge relief valves, and flushing controls within the pump housing, streamlining system plumbing while optimizing thermal efficiency.

• Precision Intelligent Controls (GBA):

  • KA/KN Control: Supports Electronic Displacement Control (EDC), facilitating seamless integration with modern digital BUS-control systems.

  • HF/GBA Control: High-performance manual or hydraulic servo controls (e.g., code GBA424224) deliver exquisite operational feel and feedback for smooth speed modulation in mixer drums or travel drives.

• Superior Power-to-Weight Ratio: The compact housing combined with a high-strength swashplate design allows for massive power output in a miniaturized footprint—ideal for everything from agricultural harvesters to heavy-duty construction machinery.

Detailed Models & Parameters:

• Core Series: Danfoss 90L Series (Counter-clockwise Rotation).

• Representative Models: 90L130 KA5NN80S4C8 H03 GBA424224, 90L075 HF1AB80R4 T2D03 GBA353524, 90L055 KN1NN80R4S1C03 GBA232324.

• Displacements: 55, 75, 130 cm³/rev.

• Pressure Ratings: Rated at 420 Bar (42 MPa); Peak cycles up to 480 Bar (48 MPa).

• Rotation: L (Left Hand / Counter-clockwise).