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HRS Hollow Shaft Encoder


Features and Options:

  • Classic cube style
  • Bore size from 0.250" to 1.000"
  • Metric bore size from 10mm to 25mm
  • Resolution up to 1024 CPR
  • USAMade in the USA


Product Description

The model HRS is an incremental hollow shaft encoder with up to a 1" (25mm) blind shaft bore in a standard 2-1/4" cube style housing that mounts directly on an existing shaft assembly.  A flexible mounting bracket allows the encoder to float on the shaft without rotating. The HRS generates up to 3 square wave outputs and can be configured as a single (A), quadrature (AB) or quadrature with index (ABZ) device.  Dual (AB) and triple (ABC) independent CPR outputs are also available.

Single output models can include the Anti-Jitter feature designed for conveyor and web systems requiring continuous and accurate measurement of the web’s movement even if the system must be stopped and restarted without reset. When the web stops, and if there is sufficient vibration or back-and-forth movement, then the encoder output could oscillate, appearing as if the web were actually moving. Anti-jitter eliminates this condition by significantly increasing the pulse hysteresis.

Industry Use

Conveyor Manufacturers Medical Printing and Labeling Custom Machine Builders
Packaging Robotics Material Handling Aerospace
Automated Scales      

Product Documentation

Additional Information

View FileDatasheet
View FileDrawings

Hollow Shaft Options
Output Types
Counts per Revolution Options
Anti-Jitter Option
Supply Voltage Options
Output Circuits

For our programmable Hollow Shaft model, please see our HRS-P Programmable Hollow Shaft Encoder.