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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UCD-S101G-0013-HASS-PRL by Posital Fraba

UCD-S101G-0013-HASS-PRL

Absolute Encoder, Blind Hollow Shaft, 58 mm Hub 10 mm Gray, IP67

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UCD-S101G-0013-HCSS-PRL by Posital Fraba

UCD-S101G-0013-HCSS-PRL

Absolute Encoder, Blind Hollow Shaft, 58 mm Hub 12 mm Gray, IP67

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UCD-S101G-0013-HFSS-PRL by Posital Fraba

UCD-S101G-0013-HFSS-PRL

Absolute Encoder, Blind Hollow Shaft, 58 mm Hub 15 mm Gray, IP67

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UCD-S101G-0013-HRSS-PRL by Posital Fraba

UCD-S101G-0013-HRSS-PRL

Absolute Encoder, Blind Hollow Shaft, 58 mm Hub 6.35 mm (1/4"), Gray, IP67

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UCD-S101G-0013-HSSS-PRL by Posital Fraba

UCD-S101G-0013-HSSS-PRL

Absolute Encoder, Blind Hollow Shaft, 58 mm Hub 9.52 mm (3/8"), Gray, IP67

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UCD-S101G-1213-HASS-PRL by Posital Fraba

UCD-S101G-1213-HASS-PRL

Absolute Encoder, Blind Hollow Shaft, 58 mm Hub 10 mm Gray, IP67

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UCD-S101G-1213-HCSS-PRL by Posital Fraba

UCD-S101G-1213-HCSS-PRL

Absolute Encoder, Blind Hollow Shaft, 58 mm Hub 12 mm Gray, IP67

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UCD-S101G-1213-HFSS-PRL by Posital Fraba

UCD-S101G-1213-HFSS-PRL

Absolute Encoder, Blind Hollow Shaft, 58 mm Hub 15 mm Gray, IP67

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UCD-S101G-1213-HRSS-PRL by Posital Fraba

UCD-S101G-1213-HRSS-PRL

Absolute Encoder, Blind Hollow Shaft, 58 mm Hub 6.35 mm (1/4"), Gray, IP67

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UCD-S101G-1213-HSSS-PRL by Posital Fraba

UCD-S101G-1213-HSSS-PRL

Absolute Encoder, Blind Hollow Shaft, 58 mm Hub 9.52 mm (3/8"), Gray, IP67

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