H1P075RAA7C2CD6KG1H3L45L45CL26P2NND3F Danfoss Piston Pump 75cc 450bar

Model 1: H1P075RAA7C2CD6KG1H3L45L45CL26P2NND3F

Product Overview

The H1P075RAA7C2CD6KG1H3L45L45CL26P2NND3F is a Danfoss H1P Series closed-circuit swashplate-type axial piston variable displacement pump. The H1P Series is Danfoss’s flagship product line for mobile equipment hydrostatic drive applications, offering 15 displacement sizes from 45 to 280 cc. This model features a 075 frame size with a maximum displacement of 75 cm³/rev.

The H1P Series features a cradle swash-plate design, enabling flow direction reversal by simply tilting the swash plate to the opposite side of its zero-displacement position. The specific control configuration is RAA7C2CD6KG1H3L45L45CL26P2NND3F, where R denotes Right-hand rotation and AA denotes the control code.

As a direct OEM-equivalent replacement solution for the Danfoss H1P Series, this product offers complete in-situ interchangeability, strictly adhering to Danfoss’s original design specifications and mounting interface standards. Every unit undergoes 100% simulated duty-cycle testing, ensuring that key performance metrics—including volumetric efficiency, pressure-flow characteristics, and case drain flow at rated pressure and full displacement—meet or exceed original factory specifications.

Technical Specifications (Bulleted List)

• Model Number: H1P075RAA7C2CD6KG1H3L45L45CL26P2NND3F

• Brand Series: Danfoss H1P Series

• Pump Type: Swashplate Axial Piston Variable Displacement Pump (Closed Circuit)

• Frame Size: 075

• Maximum Displacement: 75 cm³/rev

• Maximum Working Pressure: 450 bar

• Rated Speed: Approx. 3500 rpm

• Theoretical Flow (3500 rpm, full displacement): Approx. 262 L/min

• Rotation Direction: R – Right-hand (clockwise from shaft end)

• Mounting Flange: SAE C

• Control Type: Electric Proportional Displacement Control (EDC)

• Charge Pump: Integral built-in charge pump

• Hydraulic Fluid: Mineral Oil

• Operating Temperature Range: -40°C to +104°C

• Housing Material: High-strength Cast Iron

• Design Feature: Cradle swash-plate design

• Weight: Approx. 40–50 kg (configuration dependent)

Key Technical Advantages

1. Cradle Swash-Plate Design for Seamless Bi-Directional Flow
The H1P Series features a cradle swash-plate design, enabling flow direction reversal by simply tilting the swash plate to the opposite side of its zero-displacement position. This design eliminates the need for directional control valves during forward/reverse transitions, delivering smooth, shock-free direction changes that significantly improve operator comfort and system reliability.

2. 450 bar Ultra-High Working Pressure – Industry Leading
The H1P Series delivers a maximum working pressure of 450 bar. At 75 cm³/rev displacement with 3500 rpm rated speed, it outputs substantial hydraulic power. This pressure rating is among the industry’s highest for closed-circuit piston pumps, ensuring ample power reserves for heavy-duty equipment.

3. High Total Efficiency with Compact, Lightweight Design
The H1P Series is renowned for its high total efficiency. Optimized rotating groups and precision friction pair designs minimize internal leakage. The compact, lightweight, and length-optimized design makes it particularly suitable for mobile equipment with constrained installation space.

4. PLUS+1® Compatible for Intelligent Control Integration
The H1P Series supports PLUS+1® compliant control and sensor options. Standardized connector interfaces facilitate integration with Danfoss PLUS+1® control systems and third-party controllers. Optional integral filtration with bypass sensors further enhances system monitoring capabilities.

5. Robust Heavy-Duty Construction with Long-Life Bearings
The high-strength cast iron housing combined with rigorously proven rotating groups and bearings withstands the severe vibrations and pressure spikes common in off-highway applications. The wide operating temperature range (-40°C to +104°C) ensures reliable operation across global climate conditions.

Application Areas

• Skid Steer Loaders: Hydrostatic travel drive

• Trenchers: Travel and implement drive

• Asphalt Pavers: Travel drive and auger drive

• Windrowers: Agricultural hydrostatic drive

• Aerial Lifts: Travel and lift drive

• Vibratory Rollers: Travel and vibration system drive

• Turf Care Equipment: Hydrostatic travel drive

Expert Maintenance Tips

1. Model Confirmation & Pre-Installation Inspection: Prior to installation, confirm the complete model code as H1P075RAA7C2CD6KG1H3L45L45CL26P2NND3F. This is a right-hand rotation configuration—pay special attention to matching the rotation direction with the host machine PTO. Verify that the SAE C flange mounting specification matches. Manually rotate the shaft before installation to confirm smooth, obstruction-free rotation.

2. Closed-Circuit Air Purge & Charge: The H1P Series is a closed-circuit design—ensure thorough system air purge before first start-up. Air in the closed circuit can cause cavitation, noise, and performance degradation. After start-up, run at low speed with repeated direction changes to purge air from both high and low pressure circuits.

3. Fluid Cleanliness & Temperature Control: The H1P Series operating temperature range is -40°C to +104°C. A minimum filtration rating of ISO 18/15 is recommended. Complete system flushing is mandatory before initial start-up. During cold starts, ensure fluid temperature is above the minimum operating temperature to prevent cavitation and wear caused by high viscosity.

4. Charge Pressure Verification: The H1P Series features an integral built-in charge pump. After first start-up, verify charge pressure is within specification range (typically 24–30 bar). Low charge pressure causes sluggish control response and inadequate piston/slipper lubrication; excessive charge pressure may cause system overheating.

5. Electric Proportional Controller Tuning: This model features Electric Proportional Displacement Control (EDC). Commissioning requires coordination with a proportional amplifier or PLUS+1® controller for parameter setting. Verify the linear relationship between control current and displacement output meets specifications. Perform initial settings under no-load conditions, then gradually increase load to target operating conditions with fine adjustments.

6. Case Drain Port Positioning & Pressure Monitoring: Ensure the drain port is positioned higher than the pump body to prevent oil starvation in the pump chamber after shutdown. Case pressure must not exceed 3 bar. Install a pressure gauge on the case drain line for real-time monitoring.

Model 2: H1B080AALHBATCPAVNCNNNNNNP040N00NNN

Product Overview

The H1B080AALHBATCPAVNCNNNNNNP040N00NNN is a Danfoss H1B Series bent-axis variable displacement motor. The H1B Series is Danfoss’s high-performance motor line for closed-circuit hydrostatic drive applications, offering six frame sizes—060, 080, 110, 160, 210, and 250. This model features an 080 frame size with a maximum displacement of 80 cm³/rev.

The H1B Series features a bent-axis design with spherical pistons and integrated variable displacement mechanism, delivering exceptional power density and efficiency. The specific configuration is AALHBATCPAVNCNNNNNNP040N00NNN, incorporating ATEX certification, flushing valve configuration, and charge pressure settings.

As a direct OEM-equivalent replacement solution for the Danfoss H1B Series, this product offers complete in-situ interchangeability, strictly adhering to Danfoss’s original design specifications and mounting interface standards. Every unit undergoes 100% simulated duty-cycle testing, ensuring that key performance metrics—including volumetric efficiency, torque characteristics, and case drain flow at rated pressure and full displacement—meet or exceed original factory specifications.

Technical Specifications (Bulleted List)

• Model Number: H1B080AALHBATCPAVNCNNNNNNP040N00NNN

• Brand Series: Danfoss H1B Series

• Motor Type: Bent-axis Axial Piston Variable Displacement Motor

• Frame Size: 080

• Maximum Displacement: 80 cm³/rev

• Maximum Working Pressure: 450 bar (∆p = 450 bar)

• Maximum Flow: 328 L/min

• Maximum Speed: Approx. 3500–4000 rpm (application dependent)

• Rotation Direction: Bi-directional

• Control Type: Electric Proportional Displacement Control

• ATEX Certification: Group II, Category 2 for gas and dust environments

• Flushing Valve Configuration: Loop flushing shuttle, 6.5 bar shift pressure

• Flushing Relief Valve: 10 L/min, 16 bar cracking pressure

• Pressure Compensator Override: 300 bar

• Displacement Adjustment Range: 100% maximum, non-adjustable

• Mass Moment of Inertia: 0.0062 kg·m²

• Case Volume: 1.0 L

• Weight: Approx. 34.8 kg

• Housing Material: High-strength Cast Iron

• Design Feature: Bent-axis, spherical pistons

• Hydraulic Fluid: Mineral Oil

Key Technical Advantages

1. Bent-Axis Spherical Piston Design for High Power Density and Efficiency
The H1B Series features a bent-axis design with spherical pistons. Compared to swashplate designs, the bent-axis architecture offers superior rigidity, optimized load distribution, and higher efficiency. The spherical piston-to-drive flange interface better withstands radial loads and axial thrust, significantly extending motor service life.

2. 450 bar Ultra-High Working Pressure with 328 L/min Flow Capacity
The H1B080 delivers a maximum working pressure of ∆p = 450 bar with a maximum flow of 328 L/min. At 80 cm³/rev displacement, it outputs substantial torque and power, providing ample power reserves for heavy-duty mobile equipment.

3. Integrated Loop Flushing for Optimized Heat Dissipation and Fluid Life
The H1B Series features an integral loop flushing shuttle system with 6.5 bar shuttle shift pressure and a 10 L/min, 16 bar flushing relief valve. This design continuously displaces hot oil from the closed circuit to the reservoir for cooling, effectively reducing system operating temperature and extending hydraulic fluid and component service life.

4. ATEX Explosion-Proof Certification for Hazardous Environments
This model features ATEX certification for Group II, Category 2 gas and dust environments. This certification makes it the ideal choice for explosion-protection-critical applications such as mining, petrochemical, and dust-prone operations. ATEX-certified motors meet dual requirements of constructional safety and liquid immersion ignition protection.

5. Pressure Compensator Override for System Overload Protection
This model features a pressure compensator override function with a 300 bar set point. When system pressure exceeds the set point, the compensator automatically intervenes to limit motor displacement or torque output, preventing system overload damage. This function provides an additional layer of safety protection for the hydraulic system.

Application Areas

• Closed-Circuit Hydrostatic Travel Drives: Paired with H1P Series pumps for complete hydrostatic transmission systems

• Construction Equipment: Travel drives for skid steer loaders, excavators, pavers

• Agricultural Machinery: Travel and implement drives for combine harvesters, forage harvesters

• Mining and Underground Equipment: ATEX-certified applications in coal and metal mines

• Material Handling Equipment: Travel drives for forklifts, reach stackers

• Specialty Vehicles: Airport ground support equipment, military vehicles

Expert Maintenance Tips

1. Model Confirmation & Pre-Installation Inspection: Prior to installation, confirm the complete model code as H1B080AALHBATCPAVNCNNNNNNP040N00NNN. This is an ATEX-certified version—installation must strictly comply with ATEX-related installation requirements. Verify that the mounting flange specification and splined shaft type match the host machine interface. Manually rotate the shaft before installation to confirm smooth, obstruction-free rotation.

2. Closed-Circuit Air Purge & Charge: The H1B Series is a closed-circuit design—ensure thorough system air purge before first start-up. As the actuator, air in the motor housing and lines can also cause cavitation and noise. After start-up, run at low speed with repeated direction changes to purge air from the motor and system lines.

3. Housing Fill and Drain Port Positioning: During installation, ensure the housing is always filled with hydraulic fluid. The drain port must be positioned higher than the motor housing to prevent oil drain-back and housing oil starvation after shutdown. Case pressure must not exceed specifications.

4. Flushing Valve Functional Verification: This model features an integral loop flushing valve (6.5 bar shuttle shift pressure, 10 L/min flushing flow). After first start-up, verify flushing function is normal—flushing oil should flow from the motor case drain port back to the reservoir without obstruction. Abnormal flushing flow may indicate shuttle valve or flushing relief valve malfunction.

5. Fluid Cleanliness Control: A minimum filtration rating of ISO 18/15 is recommended. Maintenance and repair of ATEX-certified equipment should use certified explosion-proof tools and comply with relevant safety regulations.

6. Pressure Compensator Override Verification: This model’s pressure compensator override is set at 300 bar. Periodically verify the compensator set point and response characteristics to ensure timely protection during abnormal system pressure events.