Servo kits ILM85x23 460W | 2.56 Nm | 1730 rpm | 48 V

Frameless, hollow-shaft ILM85x23 stator-rotor kits for structurally integrated drive engineering. Discover original TQ-RoboDrive products for market-leading torque density and maximum freedom of design.

Frameless Motor ILM85
  • Frameless motors for highest design flexibility
  • Hollow-shaft capability
  • Low voltage 12V - 48V
  • 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)
The ILM Series of frameless, stator-rotor installation kits from TQ-RoboDrive utilize integrated drive engineering originally developed by the German Aerospace Center (DLR).
They are ideally suited for applications in extremely demanding environments, delivering market-leading torque density, unsurpassed precision and excellent overload capability in an exceptionally compact design.

General data/basic data

  • 460 W
Nominal torque:
  • 2.56 Nm
Peak torque:
  • 8.3 Nm
  • 1730 rpm
  • 620 g

Performance characteristics

Nominal voltage:
  • 48 V
Nominal current:
  • 11.3 A
Torque constant:
  • 229 mNm/A
Terminal resistance:
  • 300 mΩ
Number of pole pairs:
  • 10
Max. Efficiency:
  • 92 %


Outer diameter of stator:
  • 85 mm
Length Stator:
  • 37.2 mm
Inner diameter rotor:
  • 52 mm
Length Rotor:
  • 25.1 mm

Additional information

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

3D File ILM 85x23 Hall (614 KB, zip)

3D File ILM85x23 (520 KB, zip)

Drawing ILM85x23 (366 KB, pdf)

Double Rotor Gluing Guideline (170 KB, pdf)

Extended datasheet ILM85x23 (572 KB, pdf)

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

Servo-Kit Productinformation ILM (880 KB, pdf)

Delivery time: 10-12 weeks

Got more questions? Check our FAQ for further information.