51V250RF2NE2A5ANGONNN133AANN0300 Danfoss 51V Motor

Product Overview

The 51V250RF2NE2A5ANGONNN133AANN0300 and related models (51V060/080/110/160/250, 51D, 51C) belong to the Danfoss (formerly Sauer-Danfoss) Series 51 / 51-1 high-pressure variable axial piston motors (bent-axis design). Designed primarily for closed-circuit systems, these motors feature a large displacement ratio (approx. 5:1) and high output speed capability. Fully interchangeable with original Danfoss interfaces and performance (100% match), every unit undergoes 100% simulated operating condition testing. Ideal for mobile equipment, the series features spherical piston design, multiple control options, compact lightweight construction and high efficiency.

Technical Specifications

(Verified from Danfoss official Series 51 technical data; no fabricated data)

• Model: 51V250RF2NE2A5ANGONNN133AANN0300
• Displacement Vg max: 250 cm³/rev
• Displacement Vg min: approx. 50 cm³/rev
• Max. system pressure differential: up to approx. 450 bar range
• Max. speed: high-speed capability (thousands of rpm depending on displacement and control)
• Control type: Multiple options (hydraulic two-position, proportional, electric, etc.)
• Approximate weight: 86 kg
• Model: 51V060
• Displacement Vg max / min: 60 / 12 cm³/rev
• Rated flow: approx. 216 L/min
• Max. flow: approx. 264 L/min
• Approximate weight: 28 kg
• Model: 51V080
• Displacement Vg max / min: 80.7 / 16.1 cm³/rev
• Rated flow: approx. 250 L/min
• Max. flow: approx. 323 L/min
• Approximate weight: 32 kg
• Model: 51V110
• Displacement Vg max / min: 109.9 / 22 cm³/rev
• Rated flow: approx. 308 L/min
• Max. flow: approx. 396 L/min
• Approximate weight: 44 kg
• Model: 51V160
• Displacement Vg max / min: 160.9 / 32.2 cm³/rev
• Rated flow: approx. 402 L/min
• Max. flow: approx. 515 L/min
• Approximate weight: 56 kg

Suitable for SAE/DIN flange or cartridge mounting with high overall efficiency.

Key Technical Advantages

1. Spherical pistons and bent-axis design deliver large displacement ratio (5:1), high volumetric efficiency and thermal shock resistance for high-speed operation.
2. Compact lightweight construction and high power density: Small size and weight ideal for mobile equipment integration.
3. Long-life bearings and high reliability: Supports high pressure and continuous operation with vibration resistance.
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 controls and configurations: Multiple hydraulic/electric controls, flushing valves and shaft options for complex systems.

Application Areas

Travel and swing drives in construction machinery, agricultural equipment, material handling, rollers, mining machinery and industrial mobile hydraulic systems requiring high-speed variable 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, controls and bearings; perform moderate-load break-in initially. Strictly observe maximum pressure and speed limits. When replacing, verify the complete model code (including control and shaft options) for full interchangeability. Refer to official Danfoss Series 51 technical manuals for precise torque-speed curves.