Equipment - Capacitive Discharge Welders

Fine Spot Weld Heads

The SEK500 and SEK600 series weld heads provide precision and repeatability for thousands of dollars less than similar weld heads.  The SEK weld head activates the weld at a user defined pressure setting.  This ensures that welds will be repeatable for small and large production runs.

The SEK500 series is designed to meet the needs of the battery manufacturing sector, while the SEK600 series weld heads are designed for general fine spot opposed resistance welding.  The SEK500A and SEK600A are air actuated while the SEK500B and SEK600B use a foot pedal to lower the weld head.  Air actuation has advantages in ease of use and convenience for high volume applications.  The manual foot pedal weld heads have a lower initial cost and are well suited for short periods of use.


  • SEK series weld heads provide precision and repeatability
  • Fine control of weld pressure from 1 to 20 Newtons (~0.2 to 4.5 lbs)
  • Air or foot pedal actuated
  • Low electrode inertia for fast follow-on pressure
  • SEK500 weld heads are ideal for battery manufacturing and other series welding applications
  • SEK600 weld heads are well suited for opposed / through weld applications

Technical Resources

Sunstone Weld Head Datasheet
Sunstone Weld Head Instruction Pamphlet


Weld heads: Watch Quicktime Video: Low | Med
SEK500: Watch Quicktime Video: Low | Med

Spotwelding Consultants Inc.

4209 Industrial
Rowlett, Texas 75088

Toll Free: 888-255-6780
Phone: 972-475-0874
Fax: 972-475-5024