Sigma 3.1 Tool Changer -For automotive welding lines-

sigma3.1(Applied Robotics)

Applied Robotics Sigma 3.1 is a heavy duty modular tool changer with increased capabilities. Higher strength, lower weight, and a low profile maximizes robot load capability while enhancing modularity and interchangeability to increase flexibility.

Features and Benefits

  • Higher payload capablity, up to 350kg
  • Unique six-sided design accommodates more utilities
  • A Sigma 3.1 and Sigma 5.1 common profile provides modularity and allows for interchangeability of utility modules
  • Connects directly to your robot face plate, eliminating adaptor plate
  • Low profile reduces inertial forces
  • Supports wide variety of bus communication systems


  • Spot welding
  • Material handling
  • Machine loading/unloading
  • Mold changing
  • Docking systems
  • Pallet coupling systems
  • Pick and place operations
  • Press transfer



Robot Adaptor

Tool Adaptor

Payload (kg)


Moment-Mx, My

15,000 in lbs/ 1,695Nm

Moment Mz

15,700 in lbs/ 1,780 Nm

Height (mm)


Width x Length (mm)

268 x 321


16.5lb/ 7.34kg

11.2kg/ 5.13kg

Couple/ Uncouple Port

1/4 BSPP


Couple Status Sensor

Couple/ Uncouple


Repeatability-X,Y (mm)


Repeatability-Z (mm)


Operating Temp. (deg. C)


Operating Pressure

6bar ± 1

Note: Specifications provided are maximum recommended limits under static conditions.


Distribution Region

  • Japan
  • Taiwan

Contact Us 

Please feel free to contact us.