Servo-Kits ILM25x04 70 W | 0.032 Nm | 22650 rpm | 24 V

Frameless, hollow-shaft ILM25x04 stator-rotor kits with market-leading torque density and maximum freedom of design for structurally integrated drive engineering.

frameless motors ilm25
  • Frameless motors for highest design flexibility
  • Hollow-shaft capability
  • Low voltage 12V - 24V
  • Highest torque density and dynamics due to excellent copper fill factor
  • Low thermal losses by concentrated coils
  • Thermally optimized actuator design by structural integration and thermally conductive epoxy casting
  • Weight and installation space optimized drive system design based on load profile analysis
  • High control quality by high bandwidth and lowest harmonic component (lowest ripple)
With the stator-rotor installation kits of the ILM series RoboDrive offers solutions for structurally integrated drive engineering. 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 and customized torque-speed characteristics can be realized. The implementation of customer-specific solutions to achieve a compact and thermally optimized design is supported by detailed documentation, engineering services based on the RoboDrive development expertise.

General data/basic data

  • 70 W
Nominal torque:
  • 0.032 Nm
Peak torque:
  • 0.105 Nm
  • 22650 rpm
  • 16 g

Performance characteristics

Nominal voltage:
  • 24 V
Nominal current:
  • 3.8 A
Torque constant:
  • 8.8 mNm/A
Terminal resistance:
  • 530 mΩ
Number of pole pairs:
  • 7
Max. Efficiency:
  • 87 %


Outer diameter of stator:
  • 25 mm
Length Stator:
  • 10.8 mm
Inner diameter rotor:
  • 11.6 mm
Length Rotor:
  • 6.3 mm

Additional information

Detail specification:
  • See data sheet
  • The above data is for star-serial interconnection. Please download the datasheet for other interconnection values.

Drawing ILM25x04 (1,004 KB, pdf)

3D File ILM25x04 (265 KB, zip)

Extended datasheet ILM25x04 (461 KB, pdf)

Assembly Instructions ILM Servo-Kits (3 MB, pdf)

Servo-Kit Productinformation ILM (880 KB, pdf)

Delivery time: 10-12 weeks

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