Danfoss H1P 078 Pump | H1-P-078-L-A-A4-C2 | 83018142 | Closed Circuit Piston Pump

Danfoss H1P 078 Series Closed Circuit Axial Piston Pump

Product Overview: The Danfoss H1P-078 is a global benchmark in hydrostatic drive technology, specifically engineered for closed-circuit systems in mobile hydraulic machinery. Featuring a geometric displacement of 78 cm³/rev, this unit—including model H1-P-078-L-A-A4-C2… (Part No. 83018142)—integrates advanced electro-hydraulic control. Its high power density and compact footprint make it the premier choice for vibratory rollers, large agricultural harvesters, and specialized vehicle traction systems.

Key Technical Advantages:

• Superior Power Density: Delivers high flow output within a minimal installation envelope, supporting rated pressures up to 450 Bar and peak cycles of 480 Bar.

• Precision A4-C2 Control: * A4-C2 Logic: Equipped with high-performance proportional electric displacement control, ensuring smooth start-ups, linear acceleration, and highly accurate load-sensing feedback.

• Integrated System Components: Features built-in charge pumps, high-pressure relief valves, and charge check valves, simplifying system plumbing and drastically reducing the risk of external leakage.

• Low Noise & Vibration Engineering: Optimized valve plate design and a nine-piston rotating group significantly reduce fluid-borne pulsations and mechanical noise, improving cabin comfort.

• 100% Digital Configuration Match:

  • The extensive smart code (e.g., D6-H-G1-H3-L-28…) defines specific charge pressure settings, pressure limiter parameters, and sealing specs, ensuring a 1:1 match for original equipment integration.

Detailed Models & Parameters:

• Core Series: Danfoss H1P Series 1.

• Part Number: 83018142.

• Full Model Code: H1-P-078-L-A-A4-C2-B-D6-H-G1-H3-L-28-L-28-C-L-24-PN-NNN-NNN.

• Max Displacement: 78 cm³/rev (4.76 in³/rev).

• Pressure Ratings: Rated at 450 Bar (6525 PSI) continuous; Peak capabilities up to 480 Bar (6960 PSI).

• Maximum Speed: Rated speed up to 3500 – 4000 rpm.

• Typical Applications: Vibratory Roller Drives, Paver Traction, Combine Harvesters, and Material Handling Equipment.