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Reverse Displacement Motor (RDM)

Reverse Displacement Motor (RDM)

Reverse Displacement Motor (RDM)

Product catalog summary
Overview: The document is a technical data sheet for the Reverse Displacement Motor (RDM) designed by Danfoss for open circuit applications requiring reverse functionality. It highlights the motor's durability, flexibility, and integration benefits.
Features:
  • Durability and Flexibility: Designed for open circuit applications with reverse functionality, offering five displacements for optimal hydraulic motor selection.
  • Installation Benefits: Compact design with high efficiency, utilizing nine piston rotating groups and an 18-degree maximum angle. Integrated shifting valve for reversing without external valves, reducing hoses and losses.
  • Wide Range of Options: Includes fail-safe operation, damped shifting, various shaft options, integrated system protection, and compatibility with Danfoss Series 45 pumps.
Technical Specifications:
  • Displacement: Ranges from 25 cm³ to 45 cm³ across different models (LM25, LM30, LM35, KM38, KM45).
  • Theoretical Torque: Varies from 0.40 N•m/bar to 0.72 N•m/bar depending on the model.
  • Output Speed: Rated speeds range from 3400 to 3600 rpm, with maximum speeds up to 4300 rpm.
  • System Pressure: Maximum pressure is 350 bar for most models, with case pressure rated at 0.5 bar above outlet pressure.
Applications: Suitable for fan drives with reverse functionality, conveyors, and other mobile machinery applications.
Electrical Parameters: Operates on 12Vdc or 24Vdc with respective current requirements of 1500 mA and 750 mA. Uses a Deutsch Connector DT04-2P.
Additional Information: Danfoss reserves the right to alter products without notice and disclaims responsibility for errors in printed materials. Contact information for Danfoss Power Solutions in various regions is provided.
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Catalog excerpts

Reverse Displacement Motor (RDM)-1

MAKING MODERN LIVING POSSIBLE Data Sheet Reverse Displacement Motor (RDM) Open Circuit Piston Motor For more than 40 years, Danfoss has been developing state-of-the-art components and systems for mobile machinery used in off -highway operations around the world. We have become a preferred supplier by offering the best of what really matters: the hardware inside your vehicle application. The Reverse Displacement Motor (RDM) is designed for use in mobile open circuit applications. It offers reverse functionality without external valves, and provides system robustness with available anti-cavitation and shock valves. The RDM uses the existing and proven technology of the Danfoss L/K motor. These motors have been optimized with regard to options, life, package size and installed cost. The RDM is a two-position reversing motor, with smooth, shift-on-the-go capability. The integrated proportional shifting valve uses system pressure. It allows reversing functionality without external valves and external pressure supply. yy Designed for Durability and Flexibility –– Especially designed for open circuit applications with a need for reverse functionality –– Five displacements allow the optimum selection of a hydraulic motor to fit your application –– Reliability - uses existing and proven technology of Danfoss L&K motors yy Wide Range of Options –– Fail Safe: Without control signal, the motor is biased to maximum forward speed –– Damped shifting from reverse to forward –– Shaft options with dust seal protector –– Integrated system protection - anti-cavitation and shock valve –– High capacity bearings to withstand axial fan yy Installation and Packaging benefits forces –– Short and compact –– Complimentary to Danfoss Series 45 open circuit –– High efficiency - nine piston rotating groups with pumps with electronic proportional control an 18 degree maximum angle –– PLUS+1 micro controller with fan drive software –– Uses system pressure for shifting – no external available pressure supply needed –– This motor has the capability to be held at or –– Integrated shifting valve enables reversing – no near neutral for potential added system power external valves needed - less hoses - less losses savings or faster heating of the engine at start-up - simple and clean installation –– Variety of porting options allow for easier system –– 12Vdc and 24Vdc valves configurations system configurations - Metric O-Ring boss - SAE O-Ring boss - Split flange –– A speed sensor is available

 Open the catalog to page 1
Reverse Displacement Motor (RDM)-2

Data Sheet Reverse Displacement Motor (RDM) Technical Specifications Application List and Example Physical Properties Parameter Displacement (maximum) cm3 [in3] Weight Theoretical torque yy Fan Drives with reverse functionality yy Conveyers yy Etc. Fan Drive Circuit Microcontroller (PLUS+1TM) Operating Parameters Output Rated min-1 Speed (rpm) (at max. disp.) Maximum Case pressure Rated Maximum 0.5 [7] above outlet pressure, 2 [29] absolute pressure 2 [29] above outlet pressure, 6 [87] absolute pressure Engine Control Module (ECM) Temperature Sensors Electrical Parameters Voltage Variable Pump...

 Open the catalog to page 2

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.