Solid Shaft Servomotors RDU70x18-VW270 W | 1.24 Nm | 2120 rpm | 48 V

Solid-shaft 70x18 drive units featuring market-leading torque density in a compact footprint. Suitable for a broad range of industrial applications.

  • Industry-leading torque density
  • Excellent overload capability
  • Compact design
  • Absolute SinCos encoder up to 12 bits
  • Integrated safety brake
  • Mounting flange based on B5/B14 standard
  • Customized specific flange available
  • Installation space savings by optional gearheaddirect mount
With the servo motors of the RDU series RoboDrive presents high-performance motors based on the well-established stator-rotor kits. The RoboDrive technology provides the highest power density at maximum torque range and overload capability in a compact design. The variable concept offers solutions for a variety of demanding drive applications. On request alternative voltage levels, increased speeds and integrated safety brakes are available.
The integrated absolute encoder enables high positioning accuracy and excellent speed stability. The design of the mounting flange allows the motors to be combined with the gear units of the leading gear manufacturers. On request the motors are delivered with gearunits of Neugart, Wittenstein, Spinea and Harmonic Drive.

General data/basic data

  • 270 W
Nominal torque:
  • 1.24 Nm
Peak torque:
  • 4.05 Nm
  • 2120 rpm

Performance characteristics

Nominal voltage:
  • 48 V
Nominal current:
  • 6.1 A
Torque constant:
  • 187 mNm/A
Terminal resistance:
  • 660 mΩ


  • 80 mm
Motor length without brake:
  • 71.4 mm
Motor length with brake:
  • 89.3 mm
Weight without brake:
  • 995 g
Weight brake:
  • 1280 g
Length Centering:
  • 2 mm

Additional information

Sensor type:
  • Magnetic rotary encoder, differential sin/cos signal, signal amplitude 1 Vpp, signal offset Udd /2, accuracy ± 0.5°, supply voltage Udd= 5 V
Detail specification:
  • See data sheet

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