Lincoln K5126-1 Square Wave TIG 200 AC/DC TIG & Stick Welder
$999.00
The Lincoln K5126-1 Square Wave TIG 200 AC/DC TIG & Stick Welder is a portable inverter TIG machine offering 200 amps of AC/DC output, adjustable square wave controls, pulse TIG capability, and dual-voltage operation. It is designed for users who want high-quality aluminum and stainless TIG welding performance in a lightweight, modern, and efficient package, making it a popular choice for fabrication shops, automotive builders, and advanced hobby welders.
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Description
Lincoln K5126-1 Square Wave TIG 200 AC/DC TIG & Stick Welder
Compact inverter-based AC/DC TIG and Stick welder designed for precision aluminum and stainless steel welding with advanced wave control and dual-voltage operation.
The Lincoln Square Wave TIG 200 (K5126-1) is a modern AC/DC TIG and Stick welding machine built for users who need high-quality TIG performance in a portable, inverter-based platform. It is commonly used for automotive fabrication, motorsports, light manufacturing, aluminum repair, stainless steel work, and general precision welding tasks.
Unlike older transformer-based TIG machines, this unit uses Square Wave inverter technology, giving better arc stability, cleaner aluminum welds, and improved energy efficiency.
Key Features
- AC/DC TIG + Stick capability
- Advanced Square Wave inverter technology
- Adjustable AC frequency & balance control
- Built-in pulse TIG mode for heat control and thin materials
- Dual-voltage operation (120V / 230V)
- Portable lightweight design (~50 lb)
- Excellent arc stability on aluminum and stainless steel
- Digital interface with simple parameter control
Best Applications
- Aluminum fabrication and repair
- Automotive restoration
- Motorsport fabrication
- Stainless steel fabrication
- Bicycle / motorcycle frame welding
- Light industrial maintenance
- Home and professional workshops
Advantages
- Excellent aluminum TIG performance for its class
- Lightweight and portable compared to transformer TIG machines
- Modern inverter efficiency (lower power consumption)
- Adjustable AC waveform control for cleaner welds
- Good balance between beginner-friendly and professional capability
- Dual-voltage flexibility for workshop or field use
Limitations
- Not designed for heavy industrial continuous welding
- 200A maximum output limits thick material work
- 25% duty cycle at max power (requires cooling breaks)
- DC TIG only for steel/stainless (AC reserved for aluminum)
| Specification | Details |
|---|---|
| Brand | Lincoln Electric |
| Model | Square Wave TIG 200 |
| Part Number | K5126-1 |
| Processes | AC TIG, DC TIG, Stick (SMAW) |
| Input Voltage | 120V / 230V Single-Phase |
| Output Range | 5–200A |
| Maximum Output | 200A |
| Duty Cycle | 25% @ 200A (230V) |
| AC Frequency Control | Adjustable |
| AC Balance Control | Adjustable cleaning/penetration |
| Pulse TIG | Built-in pulse mode |
| Weight | ~46–50 lb (≈21–23 kg) |
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