Reverse Displacement Motor offers speed sensor option.

Press Release Summary:

Offering reverse functionality without external valves, Reverse Displacement Motor is suited for mobile equipment applications. Open circuit piston motor is available with 38cc and 45cc displacement options for larger machines, as well as speed sensor for precise system efficiency control, and 12 or 24 V integrated proportional shifting valve for smooth on-the-go reversing. Motor is suited for fan drive systems in Tier 4 agriculture, forestry, and construction equipment applications.

Original Press Release:

Danfoss Releases Exciting New Options for Reverse Displacement Motor

Danfoss has introduced new, valuable options for its innovative Reverse Displacement Motor (RDM). The expanded RDM option portfolio increases both functionality and customer value.

Danfoss is pleased to expand on the innovative Reverse Displacement Motor (RDM). The open circuit piston motor offers reverse circuit functionality without external valves — an unprecedented hydraulic system solution for mobile equipment applications. With wider product options, the RDM can be designed to meet individual needs of customers, increasing function and value. The RDM enables customers to achieve up to 10 percent power savings, a 15 percent average reduction in total system cost, and reduced system complexity.

New RDM options provide customers with more functionality through control options and increased displacement. The compact motor now features the following added options: 38cc, 45cc, Speed Sensor and 24V Valve. The new increased displacements allow the RDM system solution to be available for larger machines. A new speed sensor option provides more precise system efficiency control and the 24V valve enhances the RDM to accommodate additional machine electric architectures.

The Danfoss RDM features a 12V or 24V integrated proportional shifting valve that allows smooth, on-the-go reversing using system pressure. The simplified design of the RDM eliminates the external valves and pressure supply required in typical reversing solutions — and eliminates the cost and pressure losses associated with them.

As previously announced, the RDM is complementary to the Danfoss Series 45 open circuit axial piston pumps, PLUS+1® microcontrollers and DP700 PLUS+1 mobile machine displays, and is ideal for fan drive systems in Tier 4 agriculture, forestry and construction equipment applications. The reverse functionality of the RDM enables the fan to purge trapped dirt and debris, restoring cooling efficiency. Danfoss fan drive packages including the RDM can be tuned to meet the unique cooling requirements of Tier 4 equipment applications.

“At Danfoss, we’re dedicated to being our OEM’s strongest partner in mobile hydraulics,” said John Heller, Product Marketing Manager at Danfoss Power Solutions. “We know OEMs depend on our expertise, and we’re pleased to offer a variety of options for the RDM, so each customer’s specific needs are met.”

Around the world, mobile equipment manufacturers rely on Danfoss expertise for the most innovative work, propel, control and steering solutions. Working in partnership with customers, Danfoss provides high-value, high-performance components for a broad range of mobile equipment applications. Danfoss designs, manufactures and sells a complete range of engineered hydraulic and electronic components including hydrostatic transmissions, mobile electronics, orbital motors, steering components and PVG proportional valves.


For technical information:

John Heller

Product Marketing Manager

Danfoss Power Solutions

Ames, Iowa, USA

Phone: +1 515 239 6208

For media information and photos:

Americas & Europe:

Sarah Clark

Danfoss Power Solutions  

Ames, Iowa, USA

Phone: +1 515-956-5233


Kentaro Ide

Danfoss Power Solutions

Osaka, Japan   

Phone: +81 6-6395-6066


Kelly Xu

Danfoss Power Solutions

Shanghai, China

Phone: +86 21 3418 5336

Related links:

Danfoss engineers technologies that enable the world of tomorrow to do more with less. We meet the growing need for infrastructure, food supply, energy efficiency and climate-friendly solutions. Our products and services are used in areas such as refrigeration, air conditioning, heating, motor control and mobile machinery. We are also active in the field of renewable energy as well as district heating infrastructure for cities and urban communities. Our innovative engineering dates back to 1933 and today Danfoss is a world-leader, employing 24,000 employees and serving customers in more than 100 countries. We are still privately held by the founding family. Read more about us at

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