The high precision DriveSpin DS 050 actuators represent the smallest serially produced member of the DriveSpin product range, meeting even the most demanding  customer requirements from all industries.

With their optimal price/performance ratio, they reliably provide parameters such as high accuracy and precision, high tilting and torsional stiffness, low weight, compactness, low vibrations, and a wide range of suitable technical solutions.

Main design performance and advantages

  • small size gearbox with TwinSpin transformation mechanism

  • design with simple installation possibilities and a large ambient temperature range

  • fully sealed design with possibility to select type of seals

  • gearbox transformation members (crosses) in preloaded linear bearings

  • design with possibility to select type of actuator performance and gearbox output bearings

  • high linearity of torsion characteristics with respect to non-linearity in competition systems

  • higher torsion rigidity with respect to small size competitor gearboxes

  • very high torque capacity, higher (at least twice) than in small size competitor gearboxes

  • low angular transmisson error and high mechanical positioning perfomance

  • oscillation at higher natural frequency and lower amplitude


  •    Robotics & general automation
  •    Manipulation and transport systems
  •    Aerospace applications
  •    Radar, navigation, pan&tilt, optical, camera and monitoring systems
  •    Defence applications

DS 050

The DriveSpin electric rotary actuators, as the basic type of actuators, provide rotary motion and the transfer of output torque with a high radial-axial load capacity and are the most accurate and precise solution in their category.

The DS actuators are characterized by high dynamics, guaranteed by an AC servomotor, and high robustness and overload capacity of their reduction gears. The voltage and feedback variability will widely satisfy all of customers’ requirements.

DSH 050

The DSH electric actuators are characterized by the possibility to use a through hole for routing cables, pipes, and drive shafts while maintaining the radial-axial and torque load capacity and the characteristic high overload capacity of the reduction gear and of the AC servomotor, featuring high dynamics.

The voltage and feedback variability will widely satisfy all of customers’ requirements.

DSM 050

The DSM modular rotary positioning modules provide controlled rotary motion and transfer of torque with a high positioning accuracy and precision. The output flange of the module allows to capture both radial and axial forces.

The modules feature a special design of the case, which allows versatile connections, also without additional devices. The good design integration ability and small dimensions allow to create kinematic assemblies from DSM modules for end effectors, but also for additional devices and positioners.

The selection of a module size depends on the required load-carrying capacity and the number of degrees of freedom of the motion axis.


Actuator rating table - DS 050/DSH 050*/DSM 050

Reduction ratio Rated output torque 

braking output torque 

Rated input speed of the reduction gear Maximum allowed input speed of the reduction gear Tilting stiffness 1) 5) Torsional stiffness 1) 6)

Maximum lost motion

Maximum tilting moment 2) 3)  Rated radial force Maximum axial force 2) 4) Reduction gear maximum allowed temperature 
 i TR [Nm] Tmax [Nm] nr [rpm] nmax  [rpm] Mt  [Nm/arcmin] kt  [Nm/arcmin] LM [arcmin] Mcmax [Nm] FrR [kN] F a max [kN] [°C]
63 18 36 2000 5000 4 2.5 <1.5 44 1.44 1,9 65



*Hollowshaft diameter = 8 mm

  1. Mean statistical value. For further information, see Chapter 9, Tilting Stiffness and Torsional Stiffness.
  2. Load at output speed 15 rpm.
  3. Tilting moment Mc max value at Fa=0. If Fa≠0 see Chapter 9, Tilting Moment, of this document.
  4. Axial force Fa max value at Mc=0. If Mc≠0 see Chapter 9, Tilting Moment, of this document.
  5. The parameter depends on the high precision reduction gear model.
  6. The parameter depends on the high precision reduction gear model, reduction ratio, and lost motion value.
  7. Moment of inertia and Weight. For further information, see Chapter 9, Moment of inertia and Weight, of this document.

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