Complete Stud Welding
TWi-250 CD Stud Welder

TWi-250 CD Stud Welder

The Tru-Weld TWi-250 1/4" capacitor discharge system is purpose-built for professionals who demand consistent, repeatable welds across every shift. Engineered with the latest solid-state technology, this compact CD stud welder handles weld pins, cupped head pins, and capacitor discharge weld studs ranging from 14-gauge through 1/4" stainless steel, all from a rugged, portable unit that thrives on demanding job sites.

At Complete Stud Welding, we supply the TWi-250 with the full range of CD weld studs, CD stud welding accessories, and the technical support your operation needs to keep the operation running. Whether you're setting insulation pins or cycling CD welding studs in a production environment, this machine is configured for reliability from day one.

  • Touchscreen Interface with Preset Values
  • Universal Input Voltage — 110 or 220VAC
  • Welds 14-Gauge Through 1/4" Stainless CD Weld Studs
  • Ergonomic CD Stud Welding Gun with Adjustable Spring Tension

TWi-250 CD Stud Welder Specifications

Weld Range: 14-Gauge – 1/4" Stainless Steel
Duty Cycle: 18 Studs Per Minute (1/4" Settings)
Input Voltage: 110 VAC @ 15A / 220 VAC @ 7.5A, 50/60Hz
Charge Voltage: 35–200 VDC
Weight: 18 lbs. (8.1 kg); Power Supply Only
Size (L × W × H): 14″ × 10.5″ × 11.5″ / 356mm × 267mm × 292mm
Fuse: 10A
Warranty: 2-Year Limited (Power Supply)

TWi-250 CD Stud Welding Machine Features

Tru-Weld designed the TWi-250 to give welding professionals a machine that's fast to set up, easy to dial in, and built to hold up across thousands of production cycles. Every feature serves a specific purpose, reducing downtime, protecting your investment, and keeping your weld quality consistent from the first pin to the last.

Intuitive Touchscreen & Stud Presets

The protected touchscreen displays factory-preset voltage values for common CD weld stud and capacitor discharge weld pin sizes, plus a metric stud mode for international fastener compatibility. Fast, accurate weld settings without second-guessing.

Set-Point Discharge

The TWi-250 discharges directly to a new set point without needing to fully cycle down first, saving measurable time on every voltage adjustment across a full production run.

Universal Input Voltage

This CD stud welding machine accepts 110VAC or 220VAC input at 50/60Hz with no re-tapping required. One unit works across facilities, job trailers, and international installations without any hardware changes.

Long-Cord Capable

Low-input-voltage tolerance means the TWi-250 continues to perform reliably on long extension-cord runs, which is a practical advantage when your CD stud welding equipment needs to reach deep into a structure or across a large floor.

Thermal & Voltage Protection Indicators

Onboard status indicators alert the operator to overtemperature conditions, undervoltage input, and duty cycle limits, protecting the capacitor bank and internal components without requiring a service call to diagnose.

Ergonomic CD Stud Welding Gun

The hand tool is built to reduce operator fatigue during high-volume capacitor discharge weld pin and stud cycles. It features an adjustable internal spring that sets the appropriate contact pressure for applications involving mild steel, stainless steel, and aluminum. The gun tool is compatible with B collets, CI collet inserts, Euro collets, and standard adjustable chucks.

Want to Order the TWi-250 CD Stud Welding Setup?

Complete Stud Welding is your single source for the end-to-end Tru-Weld TWi-250 1/4 capacitor discharge system set up for your operational needs. Get equipment that's ready to weld and support that's ready when you need it.