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Representative HEIDENHAIN rotary encoder image, not the exact ID

HEIDENHAIN ERN 120 Incremental Rotary Encoder

Key specifications

  • Incremental rotary encoders with integral bearing
  • Stator coupling for plane surface
  • Blind hollow shaft
  • Very high positioning accuracy
  • Housing diameter ≈ 35 mm
  • Rotary encoder with integral bearing and mounted stator coupling
  • Hollow through shaft up to Ø 50 mm
  • Housing diameter approx. 87 mm
  • Output: TTL
  • 1000 to 5000 lines

Download spec sheet (PDF)

Catalog specifications

From the HEIDENHAIN Rotary Encoders catalog, October 2009. Values are catalog values; confirm your unit's configuration from its ID label.

  • ERN 120: TTL, 5 V ±10%, up to 120 mA. System accuracy 1/20 of grating period.
  • Shared options in the series (not tied to one unit): hollow through shaft D = 20, 25, 38 or 50 mm; line counts 1 000, 1 024, 2 048, 2 500, 3 600, 5 000. Mounted stator coupling, IP 64, max. speed 4 000 rpm (D over 30 mm) or 6 000 rpm (D 30 mm or less), operating temperature –40 °C to 100 °C.

Documents

Pricing and lead times on request. Use Request a Quote and include measuring length, interface, and accuracy grade.