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High-precision motors

RMHP 90 - AEHP 40

Our high-precision motors are custom-built for applications where very high runout uniformity is required, especially in the low speed range.

They have an extremely low geometrical non-uniformity of 0.28% for RMHP motors and 0.73% for AEHP motors.

Due to low rotating masses, Düsterloh hydraulic motors allow a quick change of the direction of rotation.

Performance features

  • Lowest speeds (uncontrolled 1 min-1, controlled 0.1 min-1)

  • Highest speed constancy (standard deviation 0.011 min-1 at 1 min-1)

  • Extremely low mass moment of inertia

  • Full torque over the entire speed range

  • Excellent suitability for closed-loop control applications

Technical data

  • Displacement [cm3/rev]

    43,7 - 109,5

  • Power [kW]

    up to 18

  • Speed range [rpm]

    1 - 2000

  • Torque [Nm]

    up to 310

Motor specifications

Hydraulic motors KM 11 - RM 11

In radial piston engines, seven radially arranged pistons act on the crankshaft via a heptagonal ring with needle cage. In the KM 11 engine type, control is by means of translational movement of the control ring and gap seal to the housing. The RM 11 radial piston engine, on the other hand, has a backlash-adjusting control system. This makes the motor less sensitive to the effects of pressure and temperature and reduces leakage.

Vg = 11,1 cm³/rev

 

KM 11

RM 11

Geometr. Displacement

[cm³/rev]

11,13

11,13

Theoretic specific torque

[Nm/bar]

0,18

0,18

Inlet pressure, max.

[bar]

210,00

250,00

Max, torque

[Nm]

31,60

37,70

Operating speed range

[rpm]

10-3000

5-3600

Intermittent power

[kw]

4,30

6,00

KM 11 - RM 11

Phone: 86-20-85826654

Hydraulic motors KM 22 – KM 32

Radial piston motors with polygon rings and gap seal in the control system

Vg = 22,0 cm³/rev – 33,0 cm³/rev

 

KM 22

KM 32

Geometr. Displacement

[cm³/rev]

21,99

32,99

Theoretic specific torque

[Nm/bar]

0,35

0,53

Inlet pressure, max.

[bar]

250,00

250,00

Max, torque

[Nm]

77,90

118,00

Operating speed range

[rpm]

10-2250

10-1500

Intermittent power

[kw]

7,50

7,50

KM 22 – KM 32

Phone: 86-20-85826654

Hydraulic motors KM 45 – KM 63

Radial piston motors with polygon rings and gap seal in the control system

Vg = 44,0 cm³/rev – 66,0 cm³/rev

 

KM 45

KM 63

Geometr. Displacement

[cm³/rev]

43,98

65,97

Theoretic specific torque

[Nm/bar]

0,70

1,05

Inlet pressure, max.

[bar]

250,00

250,00

Max, torque

[Nm]

156,00

236,00

Operating speed range

[rpm]

5-1800

5-1200

Intermittent power

[kw]

11,00

11,00

KM 45 – KM 63

Phone: 86-20-85826654

Hydraulic motors KM 90 - KM 110

Radial piston motors with polygon rings and gap seal in the control system

Vg = 88,4 cm³/rev - 109,5 cm³/rev

 

KM 90

KM 110

Geometr. Displacement

[cm³/rev]

88,40

109,52

Theoretic specific torque

[Nm/bar]

1,41

1,74

Inlet pressure, max.

[bar]

210,00

210,00

Max, torque

[Nm]

266,00

333,00

Operating speed range

[rpm]

5-900

5-750

Intermittent power

[kw]

10,00

10,00

KM 90 - KM 110

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.

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Guangzhou Dusterloh Machinery Co., Ltd.
(The official overseas office of Düsterloh Fluidtechnik GmbH Germany)
Hong Kong Dusterloh Machinery Co. Limited
Tel: +86 20 85826654
Fax: +86 20 85826654
E-mail: tony.ling@gzduesterloh.cn
E-mail: binhua.jiang@gzduesterloh.cn
Add: Room No.B312, 3 Hankee Avenue Dalong Street Panyu District Guangzhou City China
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