200771 - Miller OBT 1200 Contact Tip 7/64 Inch

Precision Engineering for Heavy-Duty Welding

The Miller 200771 Contact Tip is a specialized consumable designed specifically for the OBT 1200 series torches. Engineered to accommodate 7/64 inch (approx. 2.8mm) welding wire, this contact tip represents the critical interface between your power source and the welding arc. In high-amperage applications where the OBT 1200 is typically employed, the quality of the contact tip is paramount for maintaining stable electrical conductivity and ensuring consistent weld deposition.

Manufactured to Miller Electric's exacting OEM standards, this contact tip features a precisely machined bore that provides optimal wire contact while minimizing friction. This balance is essential for preventing micro-arcing inside the tip, which can lead to premature failure and unstable arc characteristics. The copper alloy construction is selected for its superior thermal and electrical conductivity, allowing it to withstand the intense heat generated during prolonged heavy-duty welding cycles often associated with large diameter wires.

Using genuine Miller parts like the 200771 ensures that your equipment operates within its designed parameters. The OBT 1200 torch is a workhorse in industrial environments, and fitting it with the correct contact tip prevents issues such as burnback, erratic feeding, and overheating. This tip is sold individually, allowing for precise inventory management for maintenance teams and fabricators.

Regular inspection and replacement of contact tips are standard maintenance procedures that significantly impact weld quality. As the bore wears into an oval shape over time, electrical transfer becomes inconsistent. Replacing your tip with a fresh Miller 200771 restores the electrical efficiency of the torch, ensuring that the welding parameters set at the machine are accurately delivered to the workpiece.