K1170 - Lincoln Electric AC225 Stick Welder 230V 225A

Lincoln Electric AC225 Stick Welder (K1170) Overview

The Lincoln Electric AC225 (K1170) is a compact, high-output stick welding power source designed for Shielded Metal Arc Welding (SMAW). Engineered for versatility and ruggedness, this unit is a staple in the light fabrication, maintenance, and repair sectors. It operates on 230V, 60Hz, single-phase power, drawing approximately 50 amps at rated output, making it compatible with standard industrial and residential heavy-duty circuits.

Delivering a welding output range of 40-225 Amps AC, the AC225 is capable of handling a wide array of electrode types and sizes. It is rated for a 20% duty cycle at 225 Amps, which is sufficient for most general repair applications. The machine excels with general-purpose mild steel electrodes such as E6011 and E6013, as well as low-hydrogen E7018AC and stainless steel rods. The transformer-based design ensures a stable and smooth arc, which is critical for reducing spatter and achieving proper fusion, especially when welding on rusty or painted metals common in repair work.

Technical Specifications and Features

The K1170 features a discrete multi-position amperage selector switch, allowing for quick and positive current adjustments. This mechanical switching mechanism is known for its longevity and resistance to the failure modes common in electronic potentiometers. The unit is housed in a heavy-gauge steel case with a powder-coated finish for corrosion resistance. It is NEMA rated, UL listed, and CSA approved, ensuring it meets rigorous safety and performance standards.

Key capabilities include:

• Electrode Capacity: Easily runs 3/16" (4.8 mm) diameter electrodes for heavy deposition rates and 5/32" (4.0 mm) electrodes for all-position welding.
• Arc Characteristics: The AC output minimizes arc blow, a common issue with DC welding on magnetized parts or in corners.
• Portability: Weighing approximately 96 lbs (43.5 kg), the unit is compact enough to be moved around the shop or mounted on a running gear (sold separately).

The Lincoln AC225 comes complete with an insulated electrode holder, a heavy-duty ground clamp, and integrated cabling, providing a turnkey solution for maintenance professionals and serious fabricators requiring a dependable AC stick welder.