DAX Linear Encoder Family

March 19, 2023
Linear encoders from SICK USA determine the absolute position of piston rods in hydraulic cylinders as well as linear movements in industrial plants.

Detecting piston positions in hydraulic cylinders and monitoring linear movements in machines, the DAX linear encoder family offers three designs with industry-appropriate measuring ranges. SICK's online configurator gives step-by-step assistance when selecting a DAX, allowing customization.


The contactless detection eliminates reference runs while offering comprehensive diagnostics for condition monitoring and integration into digital environments. DAX encoders monitor operating and limit temperatures, as well as the voltage supply for voltage peaks or drops. They perform continuous position checks, count piston strokes, add them to determine total displacements, and record operating hours.


Three housing variants are available:

  1. A design for integration into industrial hydraulic cylinders
  2. A flat type with block magnets for mounting in tight installations
  3. A version with a slide profile that guides the position magnet, ensuring precise and repeatable position measurement

The measuring range is between 2 and 98 in. (50 and 2,500 mm) and is individually configurable in 1-mm increments. For electrical installation, it offers a CANopen interface so that the measurement system can output position values with a resolution of up to 10 µm, as well as an analog output for either 0 to 10V DC or 4 to 20 mA. The linear encoders have an enclosure rating of IP65 and IP67 as well as a temperature range between -40 to 176°F (-40 and 85°C).


The encoder can be used for measuring positions in injection molding machines, presses, automotive machinery, printing & packaging machines, wind, hydro & solar plants, wood processing or medical technology.

 Measuring Length 2 to 98 in. (5 to 2,500 mm) Communication Interface Analog, CANopen Communication Interface Detail Current/Voltage Resolution 10 to 100 µm Connection Type

 Male connector, M12, 5-pin
 Male connector, M12, 8-pin

  • Easy integration into new and existing machine designs
  • Low maintenance costs
  • Absolute measurement without a reference run
  • Intelligent condition monitoring enables predictive maintenance of machines
  • Fail-safe operation due to undervoltage control and integrated overvoltage protection
  • Magnetostrictive principle of operation
  • Absolute position feedback
  • Resolution: up to 10 ?m
  • Measuring lengths: 50 mm to 2,500 mm
  • Available interfaces: Analog and CANopen
  • Highly-flexible system architecture
  • Intelligent diagnostic functions and condition monitoring
  • Profile and hydraulic variants for many installation situations


  • Injection molding
  • Hydraulic presses
  • Packaging machines
  • Renewable energies: hydropower, wind power, and photovoltaic systems
  • Metal and steel processing
  • Wood production and processing
  • Mechanical engineering
  • Medical technology