90L100MA1N8S3T2E04NNN Danfoss Piston Pump 100cc 420bar

Product Overview

The 90L100MA1N8S3T2E04NNN232320 is a Danfoss 90 Series swashplate-type axial piston variable displacement pump. The 90 Series is Danfoss’s core product line for closed-circuit hydrostatic drive applications, renowned for its exceptional power density and rugged reliability. The series offers displacements from 30 to 250 cm³/rev. This model delivers a maximum displacement of 100 cm³/rev.

This model features an L configuration (left-hand rotation, counter-clockwise from shaft end) with an integral built-in charge pump and high-pressure relief valves. MA1N8 is the control and configuration code, S3T2E04NNN is the shaft, mounting flange, and port configuration code, and 232320 is the production batch and customization code.

As a direct OEM-equivalent replacement solution for the Danfoss 90 Series, this product offers complete in-situ interchangeability, strictly adhering to Danfoss’s original design specifications and mounting interface standards (SAE C 4-bolt flange). 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: 90L100MA1N8S3T2E04NNN232320

• Brand Series: Danfoss 90 Series

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

• Maximum Displacement: 100 cm³/rev

• Nominal Pressure: 420 bar (6090 psi)

• Peak Pressure: 480 bar (6960 psi)

• System Pressure: 450 bar (delta)

• Maximum Input Speed: Approx. 3300 rpm

• Rated Flow: 330 L/min

• Rotation Direction: L – Left-hand (counter-clockwise from shaft end)

• Mounting Flange: SAE C 4-Bolt

• Shaft Type: Splined Shaft (ANSI B92.1)

• Charge Pump: Integral built-in charge pump

• Charge Pump Pressure Setting: CP 30 bar (typical)

• Hydraulic Fluid: Mineral Oil

• Housing Material: High-strength Cast Iron

• Bearings: Heavy-duty bearings

• Weight: Approx. 68 kg

Key Technical Advantages

1. Closed-Circuit Dedicated Design with High System Integration
The 90 Series is specifically designed for closed-circuit hydrostatic applications, featuring an integral built-in charge pump that provides system replenishing oil, cooling flow, and control pilot pressure. This design eliminates the need for an external charge pump, significantly simplifying system layout and reducing installation space requirements and system costs.

2. 420 bar Nominal Pressure with 480 bar Peak Capacity – Industry Leading
The 90 Series delivers a nominal pressure of 420 bar (6090 psi) with peak pressures up to 480 bar (6960 psi) . At 100 cm³/rev displacement, it outputs 330 L/min rated flow and 292–392 kW of power, providing ample power reserves for heavy-duty mobile equipment.

3. High Power Density with Compact Design
The 90 Series employs a swashplate axial piston design that delivers exceptionally high power density within a compact footprint. The compact design enables flexible installation in space-constrained engine compartments, making it the ideal solution for mobile equipment hydrostatic drives.

4. Swashplate Variable Control for Stepless Speed Regulation and Smooth Direction Reversal
By varying the swashplate angle, the pump provides stepless flow control and reverses oil flow direction without the need for directional control valves, enabling continuous, smooth control of hydraulic motor speed and direction. This design eliminates directional shock, improving operational smoothness and system reliability.

5. Robust Heavy-Duty Construction
The high-strength cast iron housing combined with heavy-duty bearings withstands the severe vibrations and pressure spikes common in off-highway applications. The 90 Series has established a strong market reputation for rugged reliability across construction, agricultural, and mining equipment sectors.

Application Areas

• Concrete Mixer Trucks (Primary Application): Hydrostatic drive for mixer drum rotation

• Construction Equipment: Road rollers, skid steer loaders, excavators

• Agricultural Machinery: Combine harvesters, self-propelled sprayers, heavy tractors

• Forestry & Mining Equipment: Feller bunchers, underground loaders, drilling rigs

• Material Handling Equipment: Large forklifts, straddle carriers

Expert Maintenance Tips

1. Model Confirmation & Pre-Installation Inspection: Prior to installation, confirm the complete model code as 90L100MA1N8S3T2E04NNN232320. This is a left-hand rotation configuration (counter-clockwise from shaft end)—pay special attention to matching rotation direction with the host machine PTO. Verify that the SAE C 4-bolt flange mounting specification and splined shaft type (ANSI B92.1) match. Manually rotate the shaft before installation to confirm smooth, obstruction-free rotation.

2. Closed-Circuit Air Purge & Charge: The 90 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 Control: Closed circuits have stringent fluid cleanliness requirements. Use hydraulic fluid meeting Danfoss specifications with filtration not低于 ISO 18/15. Complete system flushing is mandatory before initial start-up.

4. Charge Pressure Verification: The 90 Series features an integral built-in charge pump. After first start-up, verify charge pressure is within specification range (typical setting approx. 30 bar). Low charge pressure causes sluggish control response and inadequate piston/slipper lubrication; excessive charge pressure may cause system overheating.

5. 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 specifications. Install a pressure gauge on the case drain line for real-time monitoring.

6. Auxiliary Mounting Surface Utilization: The 90 Series features auxiliary mounting surfaces for installing auxiliary hydraulic pumps to power additional hydraulic systems. If this feature is required, confirm the auxiliary pump’s mounting interface and drive specifications.

Model 2: 90R100HF5NN60L4C7E00FAD262620F001

Product Overview

The 90R100HF5NN60L4C7E00FAD262620F001 is a Danfoss 90 Series swashplate-type axial piston variable displacement pump. The 90 Series is Danfoss’s core product line for closed-circuit hydrostatic drive applications, renowned for its exceptional power density and rugged reliability. The series offers displacements from 30 to 250 cm³/rev. This model delivers a maximum displacement of 100 cm³/rev.

This model features an R configuration (right-hand rotation, clockwise from shaft end)  with an integral built-in charge pump and high-pressure relief valves. HF5NN60 is the control and configuration code, L4C7E00 is the shaft, mounting flange, and port configuration code, and FAD262620F001 is the production batch and customization code.

As a direct OEM-equivalent replacement solution for the Danfoss 90 Series, this product offers complete in-situ interchangeability, strictly adhering to Danfoss’s original design specifications and mounting interface standards (SAE C 4-bolt flange). 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: 90R100HF5NN60L4C7E00FAD262620F001

• Brand Series: Danfoss 90 Series

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

• Maximum Displacement: 100 cm³/rev

• Nominal Pressure: 420 bar (6090 psi)

• Peak Pressure: 480 bar (6960 psi)

• System Pressure: 450 bar (delta)

• Maximum Input Speed: Approx. 3300 rpm

• Rated Flow: 330 L/min

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

• Mounting Flange: SAE C 4-Bolt

• Shaft Type: Splined Shaft (ANSI B92.1)

• Charge Pump: Integral built-in charge pump

• Charge Pump Pressure Setting: CP 30 bar (typical)

• Hydraulic Fluid: Mineral Oil

• Housing Material: High-strength Cast Iron

• Bearings: Heavy-duty bearings

• Weight: Approx. 68 kg

Key Technical Advantages

1. Closed-Circuit Dedicated Design with High System Integration
The 90 Series is specifically designed for closed-circuit hydrostatic applications, featuring an integral built-in charge pump that provides system replenishing oil, cooling flow, and control pilot pressure. This design eliminates the need for an external charge pump, significantly simplifying system layout and reducing installation space requirements and system costs.

2. 420 bar Nominal Pressure with 480 bar Peak Capacity – Industry Leading
The 90 Series delivers a nominal pressure of 420 bar (6090 psi) with peak pressures up to 480 bar (6960 psi) . At 100 cm³/rev displacement, it outputs 330 L/min rated flow and 292–392 kW of power, providing ample power reserves for heavy-duty mobile equipment.

3. High Power Density with Compact Design
The 90 Series employs a swashplate axial piston design that delivers exceptionally high power density within a compact footprint. The compact design enables flexible installation in space-constrained engine compartments, making it the ideal solution for mobile equipment hydrostatic drives.

4. Swashplate Variable Control for Stepless Speed Regulation and Smooth Direction Reversal
By varying the swashplate angle, the pump provides stepless flow control and reverses oil flow direction without the need for directional control valves, enabling continuous, smooth control of hydraulic motor speed and direction. This design eliminates directional shock, improving operational smoothness and system reliability.

5. Robust Heavy-Duty Construction
The high-strength cast iron housing combined with heavy-duty bearings withstands the severe vibrations and pressure spikes common in off-highway applications. The 90 Series has established a strong market reputation for rugged reliability across construction, agricultural, and mining equipment sectors.

Application Areas

• Concrete Mixer Trucks (Primary Application): Hydrostatic drive for mixer drum rotation

• Construction Equipment: Road rollers, skid steer loaders, excavators

• Agricultural Machinery: Combine harvesters, self-propelled sprayers, heavy tractors

• Forestry & Mining Equipment: Feller bunchers, underground loaders, drilling rigs

• Material Handling Equipment: Large forklifts, straddle carriers

Expert Maintenance Tips

1. Model Confirmation & Pre-Installation Inspection: Prior to installation, confirm the complete model code as 90R100HF5NN60L4C7E00FAD262620F001. This is a right-hand rotation configuration (clockwise from shaft end)—confirm rotation direction matches the host machine PTO. Verify that the SAE C 4-bolt flange mounting specification and splined shaft type (ANSI B92.1) match. Manually rotate the shaft before installation to confirm smooth, obstruction-free rotation.

2. Closed-Circuit Air Purge & Charge: The 90 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 Control: Closed circuits have stringent fluid cleanliness requirements. Use hydraulic fluid meeting Danfoss specifications with filtration not低于 ISO 18/15. Complete system flushing is mandatory before initial start-up.

4. Charge Pressure Verification: The 90 Series features an integral built-in charge pump. After first start-up, verify charge pressure is within specification range (typical setting approx. 30 bar). Low charge pressure causes sluggish control response and inadequate piston/slipper lubrication; excessive charge pressure may cause system overheating.

5. 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 specifications. Install a pressure gauge on the case drain line for real-time monitoring.

6. Auxiliary Mounting Surface Utilization: The 90 Series features auxiliary mounting surfaces for installing auxiliary hydraulic pumps to power additional hydraulic systems. If this feature is required, confirm the auxiliary pump’s mounting interface and drive specifications.