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Small design for rotary encoder mounting with 2000 mm measuring length
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Compact wire-actuated
encoder for rotary encoders with max. 36 mm diam. flange

Profile SG21:

  • Wire-actuated encoder for rotary encoder with max. Ø40 mm flange
  • Measurement lengths up to 2000 mm
  • Sturdy zinc die-cast housing, robust design, stable measuring rope (stainless steel)
  • Very compact design

Mechanical data

Feature Technical data Additional information
Housing zinc die-cast  
Wire design ø0.45 mm

rustproof stainless steel, plastic-coated

Extension force ≥2 N

T1 operating temperature

  ≥11 N

T2 operating temperature

Measured distance/ rope drum revolution 100 mm  
Weight ~0.2 kg  

Electrical data

You can find suitable rotary encoders on our website www.siko-global.com. They are suitable …

  • for analog outputs such as current or voltage: AV3650M
  • for incremental outputs: IV2800
  • for absolute outputs: WV3650M, WV36M/CAN

SIKO rotary encoders have the following interfaces, among others: incremental, SSI, CANopen, IO-Link

The technical specifications for these devices can be found in the respective data sheets. In addition, numerous encoder variants from different manufacturers can be used.

System data

Feature Technical data Additional information
Repeat accuracy ±0.15 mm

per direction of approach

Travel speed ≤1 m/s  

Ambient conditions

Feature Technical data Additional information
Ambient temperature -10 … 80 °C T1
  -40 … 80 °C T2

Ordering table

Feature Order data Specifications Additional information
Rope fixture


wire suspension with thread  


wire suspension with hook  
Encoder type


without encoder  


a wide range of encoders can be used see accessories
Position of electrical connection


direction or wire outlet or axially depending on installed encoder




opposite the wire outlet  




without encoder  
Operating temperature


-10 … +80 °C  


-40 … +80 °C  

Ordering key