K2624-1

Lincoln K2624-1 Precision TIG 375 AC/DC TIG Welder Ready-Pak w/ Cart

Industrial AC/DC TIG and Stick welding system with up to 420A output, water-cooled torch package, integrated cooler cart, and advanced aluminum welding controls.

The Lincoln K2624-1 Precision TIG 375 Ready-Pak is Lincoln Electric’s flagship transformer-based AC/DC TIG welder, engineered for heavy fabrication, aerospace, marine, pressure vessel, pharmaceutical, and industrial manufacturing applications. It offers an exceptionally wide output range of 2–420 amps, making it suitable for everything from thin-gauge precision TIG welding to heavy aluminum and thick-section fabrication.

Unlike smaller Precision TIG models, the Precision TIG 375 includes a water-cooled welding package, under-cooler cart, advanced pulse controls, and one of the highest duty cycles available in its class.

Key Features

- Massive 2–420A AC/DC output range
- Professional aluminum, stainless, titanium, and steel welding
- Micro-Start™ II Technology for superior arc starts and crater control
- Built-in TIG pulse system
- AC Auto-Balance® for optimized aluminum cleaning and penetration
- Complete water-cooled TIG package
- Heavy-duty under-cooler cart included
- Multi-voltage operation (208/230/460V)
- Designed for continuous industrial production environments

Ready-Pak Includes

- Under-Cooler Cart Water Cooler (K1828-1)
- PTW-20 Water-Cooled TIG Torch
- Foot Amptrol™ Pedal
- Harris Gas Regulator/Flowmeter
- Work Cable and Clamp
- Water Hoses
- Torch Consumables Kit
- Torch Cover
- Fully Integrated Cart System

Best Applications

- Heavy industrial fabrication
- Aluminum manufacturing
- Shipbuilding and marine fabrication
- Aerospace fabrication
- Pharmaceutical equipment manufacturing
- Food-grade stainless fabrication
- Pressure vessels and tanks
- Maintenance and repair facilities

Key Advantages

- One of the widest TIG amperage ranges available
- Outstanding aluminum TIG performance
- Extremely high duty cycle for production work
- Complete water-cooled welding package
- Proven transformer-based reliability
- Excellent arc stability on both AC and DC

Industry users frequently describe the Precision TIG 375 as a “beast” of a machine, particularly valued for heavy-duty shop applications and long-term durability. Community discussions highlight its robust transformer design and ability to handle demanding fabrication workloads.

Considerations

- Very large and heavy (~755 lbs package)
- Requires industrial electrical service
- Not intended for portable field welding
- Higher power consumption than modern inverter TIG systems
- Best suited for dedicated fabrication shops