Hollow Shaft Rotary Encoders

Hollow-shaft and hub-shaft rotary encoders are mounted directly to a motor shaft with an elastic tether. This allows for flexibility when choosing arrangements and removes the need to size the feedback hardware to the actuator dimensions.

Hollow-shaft and hub-shafts are easier to implement and less sensitive to shock and vibration that can cause misalignment. With no external fittings are required, hollow-shaft assembly dimensions are generally smaller.


Consider a Kit Encoder:

Kit Encoders from POSITAL offer smart, maintenance-free solutions for challenging tasks in real time motion feedback. A combination of sensing technologies results in a hollow shaft design with uninterruptible, battery-free multi-turn function, powered by Wiegand pulse with every rotation.

This gear-free, compact, and economically optimized concept is ideal for integration into servo motors, stepper motors, and robotic arms. Enhanced signal processing software enables high-resolution rotary position measurement.

Absolute Kit Encoders: On-Axis 

  • Battery and gear-free multiturn solid and hub shaft
  • Singleturn Resolution up to 17 bit
  • Compact design: 36 mm in diameter (22 mm coming soon)
  • Open Source Interfaces: BiSS-C, BiSS Line, 2 or 4 wires, SSI
  • One Cable Technology for BiSS Line
  • Temperature range: -40° to +105°C

Absolute Kit Encoders: Hollow Shaft 

  • Battery and gear-free multiturn hollow shaft
  • Resolution up to 19 bit, accuracy ± 0,02
  • Slim design: 18mm thickness
  • Open Source Interfaces: BiSS-C (SSI under development)
  • No calibration required
  • Suited for applications in robotic arms and motors

Hollow-Shaft Rotary Encoder Products:

Please contact us by filling out the form below to get more information on pricing and availability.