The Sunstone Pro-S is a servo-powered weld head that provides high-end features at a mid-range price. Available in an opposed configuration, the Pro-S provides quality welding results for automated, high-production environments or as a tabletop solution for smaller shops. Built-in monitoring comes standard with the Pro-S. Any manufacturer that utilizes resistance welding in their manufacturing process will see immediate efficiency gains with the Pro-S. 

Key Features 

  • Force Feedback Monitoring 
  • Displacement Feedback 
  • Pull Positional Monitoring 
  • Faster Operational Speed 
  • Increased Precision vs Pneumatic-Powered Weld Heads 
  • Adjustable Weld Head Force between 1.8 to 29.2 lbs (8 to 130 N) 
  • Positional displacement accuracy of 60 µm 
  • 2” stroke (50 mm) 
  • Automation-Ready 
  • Rotary Knob Height Adjustment 
  • Multiple Electrode Configuration Possibilities 
  • Optional Foot Pedal Control 

Application Ideas 

  • Cross wires 
  • Battery Tabs 
  • Medical  
  • Strap Welds 
  • Strain gauges 
  • Electronic components 
  • Foil welds 
  • Sheet Welds 
  • R&D Work 

Product Specifications

Tabletop Footprint (L x W x H) 14 x 5 x 24 in
Weight 22 lbs (10 kg)
Weld Force 1.8 to 29.2 lbs (8 to 130 N)
Max Electrode Stroke 2" (50 mm)
Electrode Diameter 1/8 in
Power Input 48 VDC @ 1.87 A
Max Throat Size (H x D) 9 x 10 in
Weld Cable Size/Length 0 AWG / 24 in
Foot Pedal Type Analog/Digital
Duty Cycle 100%
Electrode Speed Home to Hover Point: 3–20 mm/sec
Operating Temperature 0 to 65°
Positional Displacement Accuracy 60 µm
Actuation Method Automatic or Direct


Pro-S Users Guide

Pro-S Data Sheet

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