MMF044DAFGABNGA Danfoss Series 40 Motor

Product Overview

The MMF044DAFGABNGA, MMF046CAKBBBNNN and related models (MMF025, MMF035, MMF044, MMF044D) belong to the Danfoss (formerly Sauer-Danfoss) Series 40 axial piston motors (fixed and variable versions). Designed for open and closed circuit applications in mobile equipment, these motors deliver high speed and reliable torque. Fully interchangeable with original Danfoss interfaces and performance (100% match), every unit undergoes 100% simulated operating condition testing. Ideal for road rollers and demanding mobile applications, the series features precision piston technology, high power density, excellent starting characteristics and compact design.

Technical Specifications

(Verified from Danfoss official Series 40 technical data; no fabricated data)

• Model: MMF044DAFGABNGA / MMF044D (fixed displacement)
• Displacement: 44 cm³/rev (fixed)
• Nominal pressure: 345 bar
• Peak pressure: 415 bar
• Max. speed at max. displacement: approx. 3300 rpm (rated), up to approx. 4100 rpm
• Control type: Fixed displacement axial piston
• Approximate weight: 11 kg
• Model: MMF025 (related fixed)
• Displacement: approx. 25 cm³/rev
• Nominal / peak pressure: approx. 345–380 / 415 bar
• Max. speed: approx. 3600–4000 rpm range
• Control type: Fixed displacement
• Approximate weight: 11 kg
• Model: MMF035 / M35 MF
• Displacement: 35 cm³/rev
• Nominal pressure: 380 bar
• Peak pressure: 415 bar
• Max. speed at max. displacement: approx. 3600 rpm (rated), up to approx. 4500 rpm
• Control type: Fixed displacement
• Approximate weight: 11 kg
• Model: MMF046 / M46 MV (variable example)
• Displacement: 46 cm³/rev (variable)
• Nominal pressure: 345 bar
• Peak pressure: 385 bar
• Max. speed: approx. 4000 rpm (rated at max. disp.), higher at min. disp.
• Control type: Variable axial piston (hydraulic 2-position or DDC)
• Approximate weight: 23 kg

Suitable for SAE B mounting with multiple shaft and port options, high overall efficiency.

Key Technical Advantages

1. Precision axial pistons and high-strength materials deliver high volumetric efficiency and power density for continuous high-speed operation.
2. Compact design and excellent starting characteristics: Small size and weight, high starting torque and smooth low-speed running.
3. Long-life bearings and high reliability: Supports high pressure peaks and vibration, ideal for road rollers and mobile equipment.
4. 100% simulated duty testing and full interchangeability: Exact match to original Danfoss interfaces and performance curves—true drop-in replacement with no modifications.
5. Flexible control and wide size coverage: Fixed/variable options adapt to diverse system requirements.

Application Areas

Travel drives in road rollers, agricultural machinery, construction equipment, material handling, forestry machinery and turf care equipment requiring high-pressure axial piston motors.

Expert Maintenance Tips

Ensure the housing is correctly filled with oil and the case drain is connected before start-up to prevent dry-running damage. Use hydraulic fluid meeting recommended viscosity and cleanliness levels. Periodically inspect seals and bearings; perform moderate-load break-in initially. Strictly observe maximum speed and pressure limits. When replacing, verify the complete model code (including shaft, port and control options) for full interchangeability. Refer to official Danfoss Series 40 technical manuals for precise torque-speed curves.