H1P100LBAA3C3ND3HG9NNL42L Danfoss H1P Pump 101.7cc 450bar

Product Overview

The H1P100LBAA3C3ND3HG9NNL42L is a Danfoss H1P Series size 100 closed-circuit axial piston variable pump with a nominal displacement of 101.7 cm³/rev, maximum working pressure of 450 bar (delta), maximum pressure of 480 bar, rated speed of 3,300 rpm, and maximum speed of 3,800 rpm. The pump features a cradle swashplate design in which flow direction reversal is achieved by simply tilting the swashplate to the opposite side of its zero-displacement position — the core power element for closed-circuit hydrostatic transmissions in mobile machinery.

The H1P series covers displacements from 45 to 280 cm³/rev across 15 sizes, with the H1P100 belonging to the 089/100 size group. The series is designed for medium-power closed-circuit applications, offering high total efficiency, compact lightweight construction, standardized connector interfaces, and PLUS+1® compliant control and sensor options. The H1P100 weighs approximately 62 kg (excluding PTO and filter) with an SAE-C 4-bolt mounting flange.

The model code H1P100LBAA3C3ND3HG9NNL42L contains comprehensive configuration information: L indicates left-hand rotation (counter-clockwise, viewed from shaft end), B indicates control type, A indicates rotation direction code, A3 indicates endcap type, C3 indicates control option, ND3 indicates charge pump configuration, HG9 indicates shaft style, NN indicates filtration option, L42L42 indicates high-pressure relief settings, M24 indicates charge pressure setting, and PNNNNNNN represents other configuration codes.

Manufactured to exact Danfoss OEM specifications, all mounting dimensions, flange interfaces, and port layouts are fully consistent with the original pump for true drop-in interchangeability. Every unit undergoes 100% simulated operating condition testing before shipment.

Technical Specifications 

H1P100LBAA3C3ND3HG9NNL42L:

• Model: H1P100LBAA3C3ND3HG9NNL42L

• Series: Danfoss H1P Series (089/100 size group)

• Pump Type: Closed-circuit axial piston variable pump, cradle swashplate design

• Nominal Displacement: 101.7 cm³/rev (6.21 in³/rev)

• Maximum Working Pressure (Delta): 450 bar (6,528 psi)

• Maximum Pressure: 480 bar (6,960 psi)

• Minimum Speed: 500 rpm

• Rated Speed: 3,300 rpm

• Maximum Speed: 3,800 rpm

• Theoretical Flow at Rated Speed: 335 L/min (88.5 US gal/min)

• Control Type: Electrical Displacement Control (EDC), Deutsch DT04-2P connector

• Rotation Direction: Left-hand (counter-clockwise, viewed from shaft end)

• Mounting Flange: SAE-C 4-bolt flange, ISO 3019-1 127-4

• Shaft Style: Splined shaft, ANSI B92.1

• Case Drain Port: ISO 11926-1, 1 1/16-12

• Weight (without PTO and filter): Approx. 62 kg (137 lb)

• Case Pressure (Rated): 3.0 bar (44.0 psi)

• Case Pressure (Maximum): 5.0 bar (73.0 psi)

H1P078L AA2C2ND3HG1H3L35L35FM24PNNNNNNN:

• Model: H1P078L AA2C2ND3HG1H3L35L35FM24PNNNNNNN

• Series: Danfoss H1P Series (069/078 size group)

• Pump Type: Closed-circuit axial piston variable pump, cradle swashplate design

• Nominal Displacement: 78.1 cm³/rev (4.77 in³/rev)

• Rated Pressure (Delta): 380 bar (5,511 psi)

• Maximum Pressure (Delta): 480 bar (6,960 psi)

• Minimum Speed: 500 rpm

• Rated Speed: 3,500 rpm

• Maximum Speed: 4,000 rpm

• Theoretical Flow at Rated Speed: 273 L/min (72 US gal/min)

• Control Type: Electrical Displacement Control (EDC)

• Rotation Direction: Left-hand (counter-clockwise, viewed from shaft end)

• Mounting Flange: SAE-C 4-bolt flange

• Weight: Approx. 56 kg (123 lb)

Key Technical Advantages

1. Cradle Swashplate Design with Flow Direction Reversal: The H1P100 features Danfoss’s proprietary cradle swashplate design in which the entire swashplate assembly tilts about its axis. When the swashplate tilts to the opposite side of neutral, the pump’s suction and pressure sides automatically swap, achieving smooth flow direction reversal. This structure enables forward/reverse switching in closed circuits without additional directional valves, simplifying mobile machinery hydraulic system design.

2. High Total Efficiency and Energy-Saving Operation: The H1P series minimizes power consumption through minimized control losses, improved charge circuit design, and lower control pressure. The pump achieves industry-leading total efficiency at 450 bar operating pressure, significantly reducing fuel consumption and system heat generation in mobile machinery. The optimized charge circuit reduces charge pump power losses, further improving system energy efficiency.

3. Compact Lightweight Construction and Installation Optimization: The H1P pump features a length-optimized design weighing approximately 62 kg at 101.7 cm³/rev displacement, delivering an excellent power-to-weight ratio. The pump maintains at least one clean side (Minimum One Clean Side) for easy installation in tight engine compartments. Standardized connector interfaces simplify electrical connections and reduce machine assembly time.

4. PLUS+1® Compliant Control and Sensor Integration: The H1P100 features Electrical Displacement Control (EDC) with a Deutsch DT04-2P connector, compliant with the PLUS+1® communication protocol. PLUS+1® allows rapid development and customization of electronic machine control functions, integrating machine controls and diagnostics into a unified operating network. This control provides responsive, high-accuracy regulation for integration into modern electro-hydraulic systems.

5. H1 Platform Drop-In Interchangeability with Complete Series Coverage: The H1P series covers displacements from 45 to 280 cm³/rev across 15 sizes, with high consistency in mounting flanges, shaft ends, and control interfaces across sizes. The H1P100LBAA3C3ND3HG9NNL42L’s mounting dimensions are fully consistent with the original pump, enabling drop-in replacement without piping or coupling modification — dramatically reducing equipment downtime.

Application Areas

• Skid Steer Loaders: Main hydraulic drive pump for travel motors and work equipment

• Trenchers: Travel drive hydraulic systems

• Asphalt Pavers: Travel drive and screed hydraulic systems

• Windrowers: Travel drive hydraulic systems

• Aerial Lifts: Travel and lift hydraulic drives

• Turf Care Equipment: Travel drive hydraulic systems

• Vibratory Rollers: Vibration and travel drive hydraulic systems

• Other Mobile Machinery: Various mobile equipment requiring closed-circuit hydrostatic transmissions

Expert Maintenance Tips

1. Shaft Alignment and Flange Connection: Concentricity deviation between the pump and drive shaft must be less than 0.05 mm, with angular deviation less than 0.25°. The H1P100 uses an SAE-C 4-bolt flange (ISO 3019-1 127-4). Tighten flange bolts in diagonal sequence for even loading. The shaft surface must be paint-free, and the active spline length must meet torque rating requirements.

2. Initial Start-Up Filling and Bleeding: Pre-fill the pump with clean hydraulic fluid through the case drain port before installation. Start at the minimum speed of 500 rpm and observe a steady oil flow from the case drain port free of bubbles. The EDC-controlled pump produces near-zero displacement without a control signal, and minimal leakage flow from the case drain is normal. Once bleeding is complete, gradually increase to working pressure.

3. EDC Electrical Connection Check: The H1P100LBAA3C3ND3HG9NNL42L uses EDC electrical displacement control with a Deutsch DT04-2P connector. Verify correct connector polarity and ensure the connector surface is paint-free. During commissioning, use a current meter to monitor control signals and ensure displacement response matches system commands. Inspect connector seals for integrity to prevent moisture and dust ingress.

4. Charge Pressure and Relief Setting Verification: After initial startup or repair, connect a pressure gauge to the charge port to verify charge pressure. This model’s charge pressure setting is 24 bar (M24 in the model code). Also verify the high-pressure relief valve settings (L42L42 indicates A/B port relief settings of 420 bar). Abnormal charge pressure may cause sluggish control response or inadequate lubrication of rotating components.

5. Fluid Cleanliness and Viscosity Management: The H1P series requires high fluid cleanliness. Recommended system filtration is β10 ≥ 75 or finer. Replace filter elements after the first 500 operating hours, then every 1,000 hours or annually thereafter. Regularly monitor fluid particulate contamination and moisture content.

6. Case Drain Line Configuration: The case drain port is ISO 11926-1 1 1/16-12. The case drain line must return directly to the reservoir with backpressure not exceeding the rated 3.0 bar (maximum 5.0 bar). The drain line inner diameter must be sufficient to ensure unobstructed drainage during cold-start high-viscosity conditions.