Internal rotary encoders - ECI/EBI/EQI 1100 series
Absolute rotary encoders without integral bearing
Brand: Heidenhain

  • High axial tolerance of up to ±0.4 mm
  • Blind hollow shaft
  • Robust inductive scanning
  • Positioning accuracy of down to ±120"
  • 524 288 positions/rev.
  • Multiturn with up to 65 536 revolutions
  • Max. operating temperature: 115 °C
  • Interface: EnDat
  • Housing diameter ≈ 35 mm


Product Description
Robust design

The blind hollow shaft allows the rotary encoder to be directly coupled to the mating shaft for optimal rigidity. What's more, the inductive scanning principle is particularly tolerant of contamination and vibrational loads of up to 400 m/s² on the stator and 600 m/s² on the rotor.

Wide range of applications

For a wide variety of applications, this series offers the right encoder, including a multiturn version with up to 4096 revolutions, a version with a battery-buffered revolution counter for up to 65,536 revolutions, and external temperature sensor support.

Functional safety

Rotary encoders from this series are available with functional safety and a safe mechanical connection. Once integrated into an application with up to SIL 3 safety, they minimize malfunctions and facilitate the safe operation of machines and systems.

Compact design

The rotary encoders of this series feature high ruggedness and reliability in a compact, small-diameter design. Thanks to their installation compatibility with size 15 resolvers, these rotary encoders also facilitate standardized motor housings and thus fewer motor variants.