Guangzhou Dusterloh Machinery Co., Ltd

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Radial piston motors

RM 80N – RM 250N

Our RMN series motors have a backlash-adjusting control system and pistons that transmit energy to the shaft via polygon rings with bearings.

They can be operated at higher powers than our KM motors.

In addition, the larger swallow volumes allow for higher torque.

Nevertheless, the motors still have a compact design and can therefore also be used in confined installation spaces.

Performance features

Insensitive to thermal shock
Particularly robust
Compact design
Very good reversing properties

Technical data

Displacement [cm³/rev]

80,4 - 251,3
Leistung [kW]

bis 30,0
Drehzahl [1/min]

5 - 800
Drehmoment [Nm]

bis 1159

1. subplates for valve assembly with standardized port patterns without pressure limitation.

Subplates for valve assembly DN6/DN10 according to DIN24340 (ISO 4401 - CETOP - RP121H) and DN8 according to ISO 10372-4.Combinations with integrated brake control are available.
2. subplates for valve assembly with standardized port patterns with pressure relief MHDB16.

Valve assembly with pressure relief and feed > 1.5 bar by 2 pressure feed valves MHDB16K2-2x420VFB (pmax. = 420 bar, Qmax. = 100 l/min). The integrated feed check valves open from 1.5 bar. In order to prevent a feed-out, the feed pressure at port "E" must be higher, or an additional protection by an external check valve at port "E" is recommended. Combinations with variant 1 available.
3. subplates for valve assembly with standardized port patterns with DBDS10 pressure relief.

Valve assembly with pressure relief and supply >0.1 bar by 2 direct operated pressure valves DBDS10K1x/315bar (pmax. = 315 bar, Qmax. = 80l/min). The separate feed check valves open at >0.1 bar. Combinations with variant 1 are also available.
4. sub-bases for valve assembly with standardized port patterns with DDP16 pressure relief.

Valve assembly with pressure relief and supply > 0.1 bar through a pilot operated double pressure valve DDP16ENxxx (pmax. = 480 bar, Qmax. = 400 l/min) or DDP32ENxxx (pmax. = 480 bar, Qmax. = 700 l/min). The valve pressure setting applies to both directions of rotation. The valve with leakage line "L3" always works against the leakage pressure. Combinations with variant 1 are available, on request also with valve bodies > DN10.

Motor specifications

RM80N-RM125N
RM 160N – RM 250N

Hydraulic motors RM80N-RM125N

Radial piston motors with polygonal rings and backlash-adjusting control system

Vg = 80,4 cm³/rev - 125,6 cm³/rev

	RM 80N	RM 125N
Geometr. Displacement [cm³/rev]	80,42	125,66
Theoretic specific torque [Nm/bar]	1,28	2,00
Inlet pressure, max. [bar]	315	315
Max, torque [Nm]	363	567
Operating speed range [rpm]	5-800	5-600
Intermittent power [kw]	15,00	15,00

RM80N-RM125N

Phone: 86-20-85826654

Hydraulic motors RM 160N – RM 250N

Radial piston motors with polygonal rings and backlash-adjusting control system

Vg = 160,9 cm³/rev - 251,3 cm³/rev

	RM 160N	RM 250N
Geometr. Displacement [cm³/rev]	160,85	251,33
Theoretic specific torque [Nm/bar]	2,56	4,00
Inlet pressure, max. [bar]	315	315
Max, torque [Nm]	742	1159
Operating speed range [rpm]	5-800	5-600
Intermittent power [kw]	30,00	30,00

RM 160N – RM 250N

Phone: 86-20-85826654

Individual designs of valve assemblies

Versions e.g. with lowering brake valves or complete valve control systems including proportional or servo valves are also available.

For such applications, however, please consult our technical office.

To the contact form

Individual designs of valve assemblies

Versions e.g. with lowering brake valves or complete valve control systems including proportional or servo valves are also available.

For such applications, however, please consult our technical office.

To the contact form

Application areas of valve assemblies

Wagon puller in mining

Our hydraulic motors are used in mining. Underground, rail-bound trolleys are pushed or pulled into or out of freight elevators by hydraulically driven trolley pullers.

With hydraulic motors of the RMX series, Düsterloh Fluidtechnik manufactures particularly robust motors that ensure reliable movement of the trolleys. Precise control of the motors is guaranteed by mounting the valve assemblies directly on our motors.

Radial piston motors

RM 80N – RM 250N

Performance features

Technical data

1. subplates for valve assembly with standardized port patterns without pressure limitation.

2. subplates for valve assembly with standardized port patterns with pressure relief MHDB16.

3. subplates for valve assembly with standardized port patterns with DBDS10 pressure relief.

4. sub-bases for valve assembly with standardized port patterns with DDP16 pressure relief.

Motor specifications

Hydraulic motors RM80N-RM125N

Hydraulic motors RM 160N – RM 250N

Individual designs of valve assemblies

Individual designs of valve assemblies

Application areas of valve assemblies

Wagon puller in mining