External rotary encoders - ECN 1000 and EQN 1000 series
Absolute rotary encoders with integral bearing
Brand: Heidenhain

  • High axial tolerance of up to ±0.5 mm
  • Blind hollow shaft in Ø 6 mm
  • Positioning accuracy of down to ±60"
  • 8 388 608 positions/rev.
  • Multiturn functionality for up to 4096 revolutions
  • Max. operating temperature: 100 °C
  • Interfaces: EnDat and DRIVE-CLiQ
  • Housing diameter ≈ 35 mm


Product Description
Direct shaft coupling

The encoder's hollow shaft allows it to be coupled to the mating shaft. No additional rotor coupling is required. The high rigidity permits higher control-loop bandwidths while significantly reducing inaccuracy and installation complexity.

Precise positioning

Rotary encoders with a bearing and stator coupling ensure consistently high accuracy. Thanks to optimally matched components, system accuracies of down to ±60 arc seconds are attained.

Flexible coupling

The stator coupling compensates for play between the motor and the rotary encoder, thereby correcting inaccuracy. Even tilt and axial play of up to ±0.5 mm can be reliably compensated for. The stator coupling also facilitates easy mounting to the plane surface.

Compact design

The rotary encoders of this series feature high ruggedness and reliability in a very compact design with an outer diameter of just 35 mm. Their small footprint makes them ideal for very tight installation spaces.