Servo kits ILM85x13440 W | 1.44 Nm | 2950 rpm | 48 V

Frameless, hollow-shaft 85x13 stator-rotor kits. Discover market-leading torque density and maximum freedom of design for structurally integrated drive engineering.

frameless motors ILM85x13
  • Frameless motors for highest design flexibility
  • Hollow-shaft capability
  • Low voltage 12V - 48V
  • Highest torque density and dynamics due to excellent copper fill factor
  • Redundant windings available
  • 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) for applications in extremely demanding environments.
The motors deliver market-leading torque density, unsurpassed precision and excellent overload capability in an exceptionally compact design.

General data/basic data

  • 440 W
Nominal torque:
  • 1.44 Nm
Peak torque:
  • 4.66 Nm
  • 2950 rpm
  • 400 g

Performance characteristics

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


Outer diameter of stator:
  • 85 mm
Length Stator:
  • 27.2 mm
Inner diameter rotor:
  • 52 mm
Length Rotor:
  • 15.7 mm

Additional information

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

Safety brake RD85-RSV80

Matching this product, TQ-RoboDrive offers optimally fitting, fail-safe safety brakes with tight braking torque tolerance and low heat generation.


Absolute position sensor RD85-AksIM

Matching this product TQ-RoboDrive offers absolute magnetic multiturn encoders with high resolution and clock rate for maximum positioning accuracy.


This website uses cookies to improve the usability of our website, to analyze web visits and to personalize content.