K870 - Lincoln Electric Foot Amptrol 25ft 6-Pin Connector

Precise Amperage Control for Lincoln Electric Power Sources

The Lincoln Electric K870 Foot Amptrol is a high-performance remote current control device designed specifically for TIG (GTAW) and other welding processes requiring dynamic amperage adjustment. Engineered to interface seamlessly with a broad spectrum of Lincoln Electric power sources, this unit utilizes a robust 6-pin Amphenol connector to establish reliable communication with the welding machine. The device operates on a linear depression mechanism: depressing the pedal activates the arc and increases the current, while fully depressing it achieves the maximum amperage set on the machine's control panel. Conversely, fully raising the pedal terminates the weld and automatically triggers the machine's Afterflow cycle, ensuring proper shielding of the tungsten and weld pool.

Constructed for durability in industrial environments, the K870 features a heavy-duty housing measuring 4.5 inches in height, 12.25 inches in width, and 10.38 inches in length. It weighs approximately 6 lbs (2.7 kg), providing enough mass to remain stable on the shop floor without sliding during operation. The unit includes a generous 25-foot (7.6 meter) control cable, offering significant mobility for welders working on large assemblies or fixtures where the power source cannot be positioned immediately adjacent to the workpiece.

Compatibility is a key strength of the K870. It is the designated foot control for popular models including the PowerMIG 210 MP, Square Wave TIG 200 and 205, Invertec V160-T, V205-T, and V275-S, as well as heavy-duty industrial machines like the Flextec 450 and Idealarc R3R series. The inclusion of an optional heel rest allows operators to customize the ergonomics of the pedal to their preference, reducing ankle strain during prolonged welding sessions. This accessory is an essential component for achieving critical weld specifications in aerospace, motorsports, and general fabrication.