Galaxie® D

  • Galaxie® D – Galaxie® with an axially integrated synchronous servo motor and hollow shaft

Galaxie® D is a hollow-shaft compact drive with integrated synchronous motor and same characteristics as gearbox version: zero backlash with highest torque density, torsional rigidity and positioning accuracy with compact integrated synchronous motor.
Galaxie®, the radically new gearbox class, was nominated for the Federal President’s Award for Innovation in Science and Technology. 

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  • Technical data
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Compact hollow shaft gearmotor with same characteristics as gearbox version: zero backlash with highest torque density, torsional rigidity and positioning accuracy.


  • Highest torque density
    Extreme torsional rigidity
  • Hollow shaft for efficient media supply
  • Complete freedom from maintenance
  • Improved synchronization accuracy
  • Robust and precise output bearing
  • Zero backlash


  • Programmable motion control
  • Reduced costs for commissioning
  • Increased productivity
  • More stable processes
  • New, high performance machine generations
  • Greater competitiveness



  Galaxie® robustness line
Variant DDDD
Outer diameter1D  [mm]144187211263
Hollowshaft diameterd  [mm]26334557
Length2l  [mm]197232240325

Max. acceleration torque3

T2B  [Nm]450108618004050
Max. output speed3n2max [rpm]125958061
Nominal output torque3 @ n2NT2N  [Nm]1904507501685
Nominal output speed3 @ T2Nn2N  [rpm]31232015
Emergency stop torque3T2Not [Nm]13503000540012000
Torsional rigidity3Ct21 [Nm/arcmin]1603706501400

Sizes of the Galaxie® accuracy line series on request

1 Without connectors/varies depending on mounting position

2 Without cooling connectors
3 Values are subject to variations
4 Negative ratio indicates output rotates in opposite direction to input.

Technical data valid for actuators with water cooling; data for convection cooling may vary.
Technical data for reference only


Different encoder options, cooling options (liquid cooled, free convection), electrical connectors, and an optional holding brake are available depending on application requirements.

Typical applications

A/B/C Axis for precise positioning in CNC applications like milling and turning or indexing tables.