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Danfoss

Closed circuit pump w/ piston motor (reversible)

Closed circuit pump w/ piston motor (reversible)

Increased efficiency

Danfoss offers a wide range of efficient fan drive systems. Below are the benefits and critical considerations you need to take into account as you determine the right system for your specific needs.

Benefits

  • Increased efficiency due to variable flow piston pump

  • Reversibility inherent to the system with no additional plumbing

  • Has inherent zero-speed capability

  • Negligible risk of motor cavitation

  • Well known, closed-circuit technology for high-power applications

  • Higher pump and motor pressure, power and life ratings

  • Fan speed independent of engine speed

  • Minimal reservoir requirements

  • Motor speed sensors available

Critical considerations

  • Charge flow required

  • Higher pump and motor cost

  • Motor thrust load capability must be calculated

  • Fan fails to minimum fan speed

Related products
Variable displacement axial piston motors

We offer axial piston motors for open and closed-circuit systems, ranging from 20cc up to 250cc, with fixed, 2-position, and continuously variable displacement controls, including the zero-degree option.
Mobile fixed displacement axial piston motors

Danfoss fixed displacement motors are designed for us in numerous applications in mobile equipment. Product lines include MP1, Series 1, Series 40, Series 90, H1F and Series 741 and 743.
Mobile closed-circuit piston pumps

Danfoss offers closed-circuit piston pumps in displacements from 20cc up to 280cc and a range of control options, from direct displacement control to automotive control options, to suit your specific application.

Digital Displacement® pumps
Digital Displacement® pumps

Our Digital Displacement® pump technology is a fundamental innovation. It utilizes a radial piston machine which enables cylinders in real time, using ultra-fast mechatronic valves controlled by an embedded, intelligent computer. This makes our pump highly controllable and extremely efficient. The result is lower energy losses, increased productivity, and faster response time. 

Open circuit piston pumps
Mobile open-circuit piston pumps

Variable open circuit piston pumps are needed whenever it’s time for your machine to do work. With a broad range of displacements (25-260cc) and pressure ratings up to 350bar, Danfoss makes powering cylinders, motors, and cooling systems easy. We support all applications in the construction, agriculture, industrial, marine, and oil and gas industries.

Related solutions

Closed circuit pump w/ gear motor (reversible
Closed circuit pump w/ gear motor (reversible

Danfoss offers a wide range of efficient fan drive systems. Explore more about the benefits and the critical considerations you need to consider as you determine the right system for your specific needs.

Open circuit pump w/ piston motor
Open circuit pump w/ piston motor

Danfoss continues to lead the industry with groundbreaking fan drive technologies like our reverse displacement motor (RDM).

Variable displacement open circuit pump w/ gear motor (non reversing)
Variable displacement open circuit pump w/ gear motor (non reversing)

Danfoss offers a wide range of efficient fan drive systems.

Variable displacement open circuit pump w/ gear motor (reversing HIC)
Variable displacement open circuit pump w/ gear motor (reversing HIC)

Danfoss offers a groundbreaking fan drive technologies, such as the variable displacement open circuit pump w/ gear motor (reversing HIC).

Variable displacement open circuit pump w/ piston motor (non reversing)
Variable displacement open circuit pump w/ piston motor (non reversing)

Danfoss offers a wide range of efficient fan drive systems based on your unique cooling needs. we can work with you to design a number of different open circuit and closed circuit fan drive systems. Helping to solve your challenges.