Pro-Weld CD-312 Capacitor Discharge Stud Welder

pro-weld cd-312

CD-312 Capacitor Discharge Stud Welder

  • Designed and built in U.S.A.
  • Safety Fault Shut Down
  • Recessed Control Panel
  • L.E.D. Panel Meter
  • Diagnostic L.E.D.’s
  • Powder Coated

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The Pro-Weld International CD-312 is a state-of-the-art solid-state capacitor discharge stud/pin welder. Its rugged design and user-friendly controls make it simple to set up and use. The extremely short weld time of the capacitor discharge process allows studs to be welded to material as thin as .015 without burn-through. The unit is capable of welding mild steel, stainless steel, and aluminum studs, as well as cuphead pins.

Printable Specsheet

Parts List

Description Part No.
System Complete 100-0108
Ground Cable 125-0100
Power Unit Only 200-0012
Gun Only 300-0100


Dimensions 8-1/2″ H x 10″ W x 16-1/2″ D
Stud Range #2 – 5/16″
Weight 47 lbs
Capacitance Charge 88,000 MFD
Range 45-185 VDC
Mode Contact Gap (optional)
Weld Rate 24 Studs/Min.
Input Power 110 VAC, 20 amps


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