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Allen-Bradley Hardware Product

High-frequency Incremental Optical Encoders

  • Allen‑Bradley Bulletin 844D High-frequency Incremental Optical Encoders mount directly to the monitored shaft by a split collar clamp on the encoder, eliminating the need for mounting plates and flexible couplings.
Allen‑Bradley Bulletin 844D High-frequency Incremental Optical Encoders mount directly to the monitored shaft by a split collar clamp on the encoder, eliminating the need for mounting plates and flexible couplings.

Our Bulletin 844D High-frequency Incremental Optical Encoders mount directly to the monitored shaft by a split collar clamp on the encoder, eliminating the need for mounting plates and flexible couplings. You can install through-shaft models by inserting the monitored shaft completely through the encoder. Blind-shaft models only require insertion of the end of the shaft.

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Bulletin 844D Hollow-Shaft
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Overview

  • High-frequency response
  • Blind-shaft and through-shaft front coupled models
  • Flexible coupler not required
  • Adaptor plate not required
  • 120…16,384 PPR
  • 3.5 in. diameter housing
  • Supports 1/2…1 1/8 in. shafts
  • Cable, connector, or terminal block connection options

Product Selection

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Documentation

Looking for Technical Documentation?

Visit the Technical Documentation Center to find product specifications, installation guides, user manuals, product certifications and more.

View High-frequency Incremental Optical Encoders Technical Publications and Certifications

Certifications

  • CE Marked

Certifications apply when product is marked. See our Product Certification site for Declarations of Conformity, certificates and other certification details. 

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