Danfoss Reverse Displacement Motor Data sheet

Data Sheet
Open Circuit Piston Motors
Reverse Displacement Motor (RDM)
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 anti­cavitation 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.
Features
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
Installation and Packaging benefits
Short and compact
High efficiency - nine piston rotating groups with an 18 degree maximum angle
Uses system pressure for shifting – no external pressure supply needed
Integrated shifting valve enables reversing – no external valves needed ­less hoses - less losses - simple and clean installation
12 VDC and 24 VDC valves
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 - anti­cavitation and shock valve
High capacity bearings to withstand axial fan forces
Complimentary to Danfoss Series 45 open circuit pumps with electronic proportional control
PLUS+1® micro controller with fan drive software available
This motor has the capability to be held at or near neutral for potential added system power savings or faster heating of the engine at start-up
Variety of porting options allow for easier system configurations system configurations
Metric O-Ring boss
SAE O-Ring boss
Split flange
A speed sensor is available
Applications
Fan Drives with reverse functionality
Conveyers
Etc.
Comprehensive technical literature online at powersolutions.danfoss.com
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Danfoss | April 2016 L1410616 | AI00000188en-US0202 | 1
P108732
T3
T2
T1
Temperature Sensors
Reservoir
Microcontroller (PLUS+1TM)
Diesel Engine
Engine Control Module (ECM)
Variable Pump
(Series 45)
Reverse Displacement Motor (RDM)
Filter
Data Sheet
Reverse Displacement Motor (RDM)
Technical Specifications
Parameter Unit LM25 LM30 LM35 KM38 KM45
3
Displacement (maximum)
Weight Theoretical torque
cm [in3]
kg [lb] N·m/bar
[lbf·in/1000 psi]
Output speed Rated min-1 (rpm) 3400 3500 3600 3600 3500
Max. 3950 4150 4300 4000 3900
System pressure
(1)
Max. bar [psi] 350 [5075] 350 [5075] 325 [4715] 350 [5075] 350 [5075]
Case pressure Rated bar [psi] 0.5 [7] above outlet pressure, 2 [29] absolute pressure
Max. 2 [29] above outlet pressure, 6 [87] absolute pressure Voltage V Current 12 V
24 V
DC
DC
DC
mA 1500
Connector - DEUTSCH connector DT04-2P
(1)
Refer to L and K Frame Variable Motors Technical Information 520L0627 for pressure definitions
Fan Drive Circuit
25 [1.50]
30 [1.83]
35 [2.14]
38 [2.32]
45 [2.75]
17.5 [38.6]
0.40 [244] 0.48 [293] 0.56 [347] 0.60 [366] 0.72 [439]
12, 24
750
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B
A
C
D
E
(2x)
15.6 ± 0.15
(2x)
95 ± 2.5
4 ± 0.3
(2x)
78.75 ± 0.2
101.6 ± 0.8
54.6 ± 0.8
134.6 ± 0.8
(2x)
37.5 ± 0.8
80 ± 0.8
108.3 ± 1.5
77 ± 1.5
66 ± 1.5
(2x)
(87.4)
(22)
(57.4)
(72)
P109030
Data Sheet
Reverse Displacement Motor (RDM)
Dimensions
Description Metric Inch A/B System port ISO 6941-1, M 27x2 ISO 11926-1, 1-1/16-12 C Case Drain ISO 6941-1, M 18x1.5 ISO 11926-1, 3/4-16 D Solenoid connector DEUTSCH DT04-2P E Control gauge port ISO 6941-1, M 14x1.5 ISO 11926-1, 9/16-18
©
Danfoss | April 2016 L1410616 | AI00000188en-US0202 | 3
Danfoss Power Solutions GmbH & Co. OHG
Krokamp 35 D-24539 Neumünster, Germany Phone: +49 4321 871 0
Danfoss Power Solutions ApS
Nordborgvej 81 DK-6430 Nordborg, Denmark Phone: +45 7488 2222
Danfoss Power Solutions (US) Company
2800 East 13th Street Ames, IA 50010, USA Phone: +1 515 239 6000
Danfoss Power Solutions Trading (Shanghai) Co., Ltd.
Building #22, No. 1000 Jin Hai Rd Jin Qiao, Pudong New District Shanghai, China 201206 Phone: +86 21 3418 5200
Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without changes being necessary in specifications already agreed. All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.
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