Rotary Encoders

Posital-Fraba Rotary Encoders

Posital-Fraba has been a leader in the design and production of position & motion sensors for more than 50 years.  Their product offering features innovative sensors designed to meet demanding requirements in a wide range of industries.  The product portfolio of POSITAL includes incremental rotary encoders, absolute encoders, inclinometers and linear sensors.


  • Over 1,000,00 varieties of absolute and incremental encoders
  • Choose from over 20 Communication Interfaces
    Posital incremental encoder
  • Incremental Encoders feature any resolution up to 16384ppr
  • Magnetic and Optical Encoder varieties
  • Single and Multiturn Absolute Encoders
  • Fully Programmable Encoders
  • Encoders for Explosive Environments
  • Versatile Draw-Wire Displacement Linear Sensors
  • Precise Single and Dual Axis Tilt Measurement Inclinometers

View a 39 minute YouTube video on How Magnetic Sensing Technologies are Changing How You Use Rotary Encoders, by Posital Fraba .

Posital Fraba Rotary Encoder Chart

Quantum Devices’ QPhase High Resolution Optical Encoders

Quantim Devices' QPhase is a family of high resolution miniature optical encoders for applications requiring high performance, high resolution digital feedback in a very small package.


  • Modular and rotary shaft versions
  • High frequency response
  • Bearing design simplifies encoder attachment
  • Resolution up to 5000 lines per revolution direct read
  • 4, 6 or 8 pole commutation
  • High noise immunity
  • High operating temperature option (100 C)
  • Low profile design
  • Multiple bolt circle mounting

Quantum Devices Optical Encoder Chart

Netzers’ Rotary Electric Encoders™

Netzers' rotary electric encoders provide exceptionally accurate, high resolution, absolute position with miniature to wide diameter hollow shaft.  Available with Analog Sin/Cos , Digital SSi , Digital AqB+I  outputs, these rotary encoders feature up to 20 Bit Resolution (with 12 bit A/D) and accuracy to <0.01° .


  • Simple, robust structure with a virtually  no- failure- mechanism
  • Very low weight, inertia, and profile (=<10mm)
  • Ring shaped, hollow shaft with a wide range of diameters
  • Absolute position output over 360° rotation range
  • Precision to 0.001° in selected models
  • Default operation range from -55°C to +125°C
  • Dual and triple redundancy options
  • No magnetic signature
  • High tolerance to condensation and contaminants
  • Insensitivity to EMI/RFI and magnetic fields
  • Low power consumption
  • Ultra-high-speed options
  • Wide variety of position feedback protocols

 Netzer Precision Electrical Encoder Chart

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