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Representative HEIDENHAIN rotary encoder image, not the exact ID

HEIDENHAIN ERN 420 Incremental Rotary Encoder

Key specifications

  • Incremental rotary encoders with integral bearing
  • Stator coupling for plane surface
  • Blind hollow shaft or hollow through shaft
  • Very high positioning accuracy
  • Housing diameter ≈ 56 mm
  • Incremental rotary encoder with integral bearing and mounted stator coupling
  • Axial tolerance up to ±1 mm
  • Housing diameter approx. 56 mm
  • Output: TTL
  • 250 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 420: TTL, 5 V ±10%, 120 mA.
  • Shared options in the series (not tied to one unit): blind hollow shaft or hollow through shaft, D = 8 mm or 12 mm; available line counts 250 to 5 000. Mounted stator coupling, approx. 0.3 kg, max. speed 6 000 rpm (12 000 rpm with two shaft clamps, hollow through shaft only), IP 67 at housing and IP 64 at shaft inlet (IP 66 with hollow through shaft).
  • Operating temperature –40 °C to 100 °C. Connection: flange socket M23 (radial or axial, blind hollow shaft) or 1 m cable without connecting element.

Documents

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