Product Details

HS25A

Tough and Compact!

  • Fits shafts 3/8" to 3/4"
  • Simple Installation
  • Unbreakable Optical Disk
  • Up to 8192 PPR
  • Wide-Gap Technology: Up to 8X larger gap between sensor and rotor
  • Replaces Competitive Models without Rewiring
  • Fits end of shaft applications
  • IP65/Nema 4, 13 Rating: Dust and Liquid Tight
  • Superior Bearings and Seals
  • -20°C to +100°C Operation *
  • 2 Year No-Hassle Warranty

HS25A encoders fit shafts from 3/8" to 3/4" easily, using a durable shaft insert; units may be resized by replacing or removing the insert, enabling our factory, distributors, and customer stockrooms to swiftly meet any need. The shaft insert (3/8" to 5/8") [6 to 16mm] also provides isolation from motor shaft currents, while permitting case grounding to meet NEC requirements.

Avtron encoders have superior shaft seals and bearings that stay sealed to keep contaminants out, through temperature cycling and liquid sprays. Our encoder seals are protected by mechanical barriers to prevent flexing or failure, and Avtron’s superior bearings feature synthetic lubricants for even longer life.

Many competitive optical encoder designs risk sensor damage from any vibration or shock: sensors ride less than four thousandths of an inch from the thin, often flexible, optical disk spinning at full motor speeds. Some designs even use thin glass disks in “industrial” products! Avtron uses only unbreakable disks and a sensor to disk gap over 8X larger than the competition.

Our optical HS25A encoders use superior sensor, disk, bearing, and seal technology to give top performance in industrial conditions. Select an Avtron HS25A today!

Operating Power: Volts: 5 - 28 VDC; Current: 50mA, no load
Output Format: A Quad B with marker (A,/A, B,/B, Z,/Z)
Frequency Range: 0 to 125 kHz
PPR: 1 - 3600 standard (for other PPR needs up to 8192 consult factory)
Speed: 6000 RPM Max., (for higher speeds, consult factory)
Temperature: -20° to 100°C *
Environmental: IP65
Vibration: 5-2000Hz
Shock: 50G, 11mS duration
Weight: 0.95 lbs [431g]

Specifications and features are subject to change without notice.

* Please consult factory for temperature/speed derating

  • All digital, fully integrated design
  • No mechanical adjustments or trim potentiometers
  • Innovative shaft ring retains collar during installation
  • Advanced sensor technology
  • Superior bearings with synthetic lubricant for longer life
  • No extra charge for signal complements and marker pulse (A,A–, B,B–, Z,Z–)
  • Insulated from motor shaft currents using shaft inserts
  • Units can be resized by interchanging or removing shaft inserts
  • Optional basket guard adds even more protection

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Competitive Products

  • Avtron's HS25A encoders directly replace competitive models, including:


    Dynapar: HS20


    Encoder Product Corporation (EPC): 260, 702, 725, 755A


    And other 2.5" hollow shaft mount encoder models.


    For direct model replacements, try our cross reference page

    or

    Contact Us

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