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.

An absolute kit encoders: On-AxisAn absolute kit encoders: On-Axis

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
An absolute kit encoders: Hallow shaftAn absolute kit encoders: Hallow shaft

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:

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VLR-100 Encoder by Netzer Precision

VLR-100 Encoder

High-resolution sensor with 18-20 bit accuracy, ±0.006° precision, durable in extreme conditions, EMI/RFI resistant, and IP 40 rated.

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VLX-170 Kit Encoder by Netzer Precision

VLX-170 Kit Encoder

Lightweight, precise, with a design resistant to interference and equipped with digital interfaces for simple position monitoring.

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VLX-247 Kit Encoder by Netzer Precision

VLX-247 Kit Encoder

Light, precise, with superior tolerance to interference and digital interfaces for effortless position tracking.

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VLX-60 Kit Encoder by Netzer Precision

VLX-60 Kit Encoder

Offers 17-19 bit resolution and ±0.05° accuracy in a compact 35 mm profile, suitable for precise industrial applications.

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