194-012 - Miller Monocoil MIG Gun Liner for .035-.045 Wire, 15 ft

Genuine Miller Replacement Liner for Consistent Wire Feeding

The Miller 194012 Monocoil Liner is a critical component for maintaining the performance of your MIG welding setup. Designed specifically for feeding .035-inch to .045-inch (0.9 mm to 1.2 mm) diameter welding wires, this liner ensures that your consumable travels smoothly from the drive rolls to the contact tip. Friction or kinks within the cable assembly are primary causes of erratic arcs, burnback, and birdnesting; replacing your liner with a genuine Miller OEM part restores the mechanical integrity of your gun's feeding system.

This 15-foot liner is engineered to fit a broad spectrum of industry-standard equipment. It is the direct replacement for Miller M-Series MIG guns (including M-10, M-15, M-25, and M-40) and Hobart H-Series guns. It is also compatible with the Bernard Q150 MIG gun. Operators of popular power sources such as the Millermatic 140, 180, 211, 212, and 252, as well as the IronMan and Handler series, will find this to be the correct replacement part for their standard 15-foot gun assemblies. The liner is also suitable for the Miller Multimatic 200.

Constructed from high-quality wound steel monocoil, the liner provides the necessary flexibility to navigate the cable's curvature while maintaining enough rigidity to prevent collapsing under the pressure of the drive rolls. Proper maintenance of your MIG gun liner is essential for high-quality welds. Over time, liners accumulate copper dust, dirt, and debris from the welding wire, which increases friction. If you are experiencing stuttering wire feed despite correct tension settings, a worn or clogged liner is often the culprit. This kit comes ready to install, ensuring you can get back to fabrication with minimal downtime.

Installation Note: When installing a new liner, it is crucial to trim it to the correct length according to your specific gun's manual. A liner that is too short can cause gas leakage or wire chatter inside the diffuser, while a liner that is too long may cause kinking at the back end. Always ensure the liner is seated fully before trimming the excess at the front end.