51C080-R-D3-N-N2-NN-N-N-A0-ADA-034-AA-F3-00-00 Danfoss Bent Axis Variable Displacement Motor

Key Technical Features

  • Bent-axis axial piston design for high mechanical efficiency and long service life.
  • 80 cm³/rev variable displacement provides an excellent balance between torque output and travel speed.
  • Continuous operating pressure up to 480 bar, with intermittent peak pressure of 510 bar for demanding mobile applications.
  • 5:1 displacement ratio enables smooth low-speed operation and efficient high-speed travel.
  • Compatible with electro-hydraulic proportional, hydraulic proportional, and two-position displacement controls.
  • Available with SAE or DIN shaft configurations and axial or side port arrangements for OEM flexibility.
  • Optional loop flushing valve improves cooling and extends hydraulic oil life in closed-loop systems.

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Danfoss Series 51C080 Variable Displacement Bent-Axis Hydraulic Motor

Applications and Technical Specifications

The Danfoss Series 51C060 is a 60 cm³/rev variable displacement bent-axis axial piston hydraulic motor designed for closed-circuit hydrostatic transmissions. Featuring a robust bent-axis design with spherical pistons, the 51C060 offers excellent power density, high mechanical efficiency, wide speed range, and reliable operation under high-pressure conditions. It is widely used in demanding mobile machinery requiring precise speed control and high torque output. The motor provides a displacement ratio of up to 5:1, allowing machines to achieve both high starting torque and high travel speeds while maintaining fuel efficiency.

Main Applications

1. Road Construction Equipment

The 51C060 is commonly installed in hydrostatic drive systems for road construction machinery.

Typical applications include:

  • Asphalt pavers
  • Tandem rollers
  • Single drum rollers
  • Soil compactors
  • Milling machines
  • Cold planers

Advantages:

  • Smooth low-speed operation
  • High tractive effort
  • Excellent gradeability
  • Precise vehicle speed control
  • High durability under continuous heavy loads

2. Construction Machinery

Many OEM manufacturers select the 51C060 as a travel or work-function motor for medium-duty construction equipment.

Typical machines:

  • Wheel loaders
  • Compact track loaders
  • Skid steer loaders
  • Excavators
  • Backhoe loaders
  • Telehandlers

Benefits include:

  • High starting torque
  • Stable operation under impact loads
  • Efficient power transmission
  • Reduced fuel consumption

3. Agricultural Machinery

The motor performs exceptionally well in agricultural applications where variable vehicle speed and high pulling force are required.

Common applications:

  • Self-propelled sprayers
  • Combine harvesters
  • Forage harvesters
  • Sugar cane harvesters
  • Grain carts
  • Tractor hydrostatic transmissions

Advantages:

  • Wide operating speed range
  • Excellent low-speed controllability
  • High reliability during long operating cycles
  • Smooth acceleration

4. Forestry Equipment

The heavy-duty design makes the Series 51 suitable for forestry environments.

Applications include:

  • Forwarders
  • Harvesters
  • Log loaders
  • Wood chippers
  • Mulchers

Its high-pressure capability enables continuous operation under severe shock loading and difficult terrain.

5. Mining Equipment

The 51C060 is widely used in underground and surface mining equipment.

Examples include:

  • Underground mining vehicles
  • Drilling rigs
  • Shuttle cars
  • Roof bolters
  • Mining loaders

Its robust rotating group provides long service life even under abrasive and high-temperature environments.

6. Material Handling Equipment

Hydrostatic transmissions equipped with the 51C060 provide excellent maneuverability.

Applications:

  • Container handlers
  • Reach stackers
  • Terminal tractors
  • Heavy forklifts
  • Industrial transport vehicles

Benefits include:

  • Precise positioning
  • Smooth acceleration
  • Low maintenance requirements

7. Municipal Equipment

The motor is also used in municipal service vehicles.

Typical applications:

  • Street sweepers
  • Snow blowers
  • Snow groomers
  • Airport maintenance vehicles
  • Vacuum trucks
Parameter Specification
Product Series Danfoss Series 51
Model 51C080
Motor Type Variable Displacement Bent-Axis Axial Piston Motor
Hydraulic Circuit Closed Circuit Hydrostatic Transmission
Nominal Displacement 80 cm³/rev
Minimum Displacement 16 cm³/rev (depending on control configuration)
Displacement Ratio 5 : 1
Rotation Bi-directional
Continuous Pressure 480 bar (48 MPa)
Peak Pressure 510 bar (51 MPa)
Maximum Speed Up to approximately 6,000 rpm (application dependent)
Rated Speed Approximately 2,000–5,000 rpm
Mounting SAE 4-Bolt Flange
Shaft Options DIN 5480 Splined Shaft / SAE Splined Shaft
Port Configuration SAE Axial or Side Ports
Control Options Hydraulic Proportional, Electric Proportional, Two-Position Hydraulic, Two-Position Electric
Servo Control Internal or External Servo Supply
Loop Flushing Valve Optional (4–11.5 L/min configurations)
Case Drain Dual Case Drain Ports
Operating Medium Mineral Hydraulic Oil or Approved Synthetic Hydraulic Fluids
Operating Temperature Approximately −40°C to +115°C (fluid dependent)
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83016567 51C080-1–A-D3-N-N1-NN-N-N-U1-NNN-030-AA-F0-00-00
83016591 51C080-1–R-D3-C-B2-B3-N-N-U3-NNN-032-AA-NN-00-00
83018605 51C080-1–R-D3-N-TH-C2-N-N-X1-DDH-040-AA-NN-00-27
83019003 51C080-1–R-D3-N-B2-B3-N-N-U3-ADA-043-AA-NN-00-00
83019475 51C080-1–A-D3-N-N1-NN-N-N-U1-NNN-035-AA-F3-00-00
83019822 51C080-R-D2-N-L1-B1-W-B-M3-AWA-021-AA-E6-D4-00
83021571 51C080-1–R-D3-N-TH-C2-N-N-X1-DDH-045-AA-NN-00-22
83021665 51C080-1–R-D3-C-TH-C2-N-N-X1-DDH-030-AA-NN-00-18
83022762 51C080-1–A-D3-N-N1-NN-N-N-U1-NNN-036-AA-F3-00-00
83029203 51C080-R-D3-N-HZ-B1-A-H-G5-ABA-030-AA-F0-03-00
83032157 51C080-1–R-D2-N-E1-B1-N-N-U1-ACG-032-AA-E6-00-00
83047632 51C080-R-D3-N-HZ-B1-A-H-G5-ACA-030-AA-F0-03-00
83047634 51C080-R-D3-N-HZ-B1-B-E-G5-ACA-030-AA-F0-07-00

A: We are factory and trading company.

A: Generally it is 3-5 days if the goods are in stock. Or it is 15-20 days if the goods are not in stock, it is according to quantity.

A: We can provide samples, but not for free.

A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.

If you have more questions, pls feel free to contact us as below:

sales@bailehydraulic.com

WeChat/WhatsApp：0086 18060096097

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