Danfoss Series 51C060 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.

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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

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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

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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

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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.

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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.

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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

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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