K2618-1

Lincoln K2618-1 Precision TIG 275 AC/DC TIG Welder

Description: Industrial AC/DC TIG and Stick welding system with water-cooled torch package, 2–340A output range, and advanced aluminum welding controls.

The Lincoln K2618-1 Precision TIG 275 is a heavy-duty AC/DC TIG and Stick welder designed for fabrication shops, marine work, aerospace applications, maintenance facilities, and industrial manufacturing. It sits between the Precision TIG 225 and Precision TIG 375, offering significantly more power and duty cycle while maintaining excellent low-amperage TIG performance.

The machine features Micro-Start™ II Technology for superior arc starting and stability, plus AC Auto-Balance® for optimized aluminum welding performance. Its wide output range allows welding everything from thin sheet metal to thick aluminum and steel sections.

Key Features

- 2–340A output range for thin-gauge to heavy fabrication
- Micro-Start™ II Technology for stable arc starts and crater control
- AC Auto-Balance® for optimized aluminum cleaning and penetration
- Complete water-cooled TIG system
- Supports TIG and Stick welding processes
- Optional Advanced Pulse Control upgrade available
- Designed for continuous shop and industrial use
- Multi-voltage operation (208V / 230V / 460V)

Includes

- PTW-20 Water-Cooled TIG Torch
- Foot Amptrol™ Pedal
- Harris Gas Regulator / Flowmeter
- Under-Cooler Cart Water Cooler
- Work Cable and Clamp
- Water Hoses
- Torch Consumables Kit
- Torch Cover

Best Applications

- Heavy aluminum fabrication
- Marine fabrication and repair
- Aerospace welding
- Pharmaceutical and food-grade stainless fabrication
- Industrial maintenance
- Pressure vessels and tanks
- General fabrication shops
- Shipbuilding

Advantages

- Excellent aluminum TIG performance
- Extremely wide amperage range
- High-duty-cycle industrial operation
- Water-cooled torch system included
- Proven transformer-machine reliability
- Outstanding low-amperage arc stability

Welders frequently regard the Precision TIG 275 as a durable shop machine with excellent TIG characteristics and straightforward controls. Community discussions often highlight its arc quality and suitability for learning and professional fabrication alike.

Considerations

- Very heavy (~683 lbs)
- Requires industrial electrical service
- Not intended for portable field use
- Higher power consumption than modern inverter TIG welders
- Optional pulse control requires additional upgrade panel