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Rotary Encoder

mechanical encoders A rotary encoder, also called a shaft encoder, is an electro-mechanical device that converts the angular position or motion of a shaft or axle to an analog or digital code.

There are two main types: absolute and incremental (relative). The output of absolute encoders indicates the current position of the shaft, making them angle transducers. The output of incremental encoders provides information about the motion of the shaft, which is typically further processed elsewhere into information such as speed, distance and position.
Absolute Rotary Encoders
In the encoder world, one size does not fit all and our diversified line of encoders ensures that we have the right product for your unique applications. Big, small, heavy duty, water-tight.

Encoder Products:

  • Incremental and Absolute Encoder Solutions
  • Rotary Optical Encoder Products
  • Magnetic Encoders
  • Hall Effect Non-Contact Position Sensors
  • Contact Potentiometers
  • Other Motion Control Products

rotary encoderAlps mechanical rotary encoder with momentary-on push switch. 30 detents. 6mm diameter aluminum shaft. 12mm square body. 7mm diameter x 10mm high plain bushing. PC pins. 2 terminals for switch.

optical encoderBourns 2-channel rotary optical encoder. 1/4" diameter x 1/2" long shaft. 3/8-32 threaded bushing. 10" long radial ribbon connector with 5-conductor female connector,


  • Alpha
  • ALPS
  • API Delevan
  • Applied Motion
  • BEI Sensors
  • Bourns
  • Broadcom Limited
  • C&K Components
  • CTS
  • CUI Inc.*
  • Digilent
  • Electroswitch
  • Grayhill
  • Honeywell
  • Omron*
  • Panasonic
  • Parallax
  • Schneider Electric
  • Simpson
  • TE Connectivity
  • TT Electronics*
  • Tusonix / CTS
  • Vishay
Encoders are available at IBS Electronics from industry leading manufacturers. IBS Electronics is an authorized distributor for many encoder manufacturers.