Encoder Technology 25H Blind Hollow Shaft Incremental Encoder

Encoder Technology 25H Blind Hollow Shaft Incremental Encoder


  • 5mm Opto-ASIC encoder with a low profile (50.8mm)
  • Imperial bore sizes ranging from 0.625” to 1.125”
  • Metric bore sizes ranging from 6 mm to 28 mm
  • Single replacement solution for 50.8mm to 88.9mm encoders
  • Resolutions to 10,000 PPR, frequencies to 1 MHz
  • Versatile flexible mounting options
  • RoHS compliant
  • Corrosion-Resistant Option


The Model 25H features the largest thru-bore available in a 63.5mm encoder, mounting directly on shafts as large as 1.125″ (28 mm).  With resolutions of up to 10,000 PPR, and frequencies of up to 1MHz, this industrial-strength encoder is perfect for fast revving motors.  The 25H features the next generation of BEPC’s proprietary Opto-ASIC sensor, which provides superior accuracy and precision counts.  The injection moulded housing, made from BEPC’s custom blend of nylon composites, is grooved with “cooling fins” and can take the extreme heat of the motion control industry.  This 63.5mm encoder is ideal for replacing HS20, HS25, and HS35 style encoders. With sealing available of up to IP66, many new rugged flexible mounting options, and a corrosion-resistant option, the Model 25H can perform in demanding industrial environments.


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