LM3A-12 - Miller AccuLock MDX Liner .035-.045 12ft LM3A-12

Flawless Wire Feeding with Miller AccuLock MDX

The Miller LM3A-12 AccuLock MDX Liner is a premium replacement component designed specifically for Miller MDX Series MIG guns. Engineered to handle wire diameters between 0.035" and 0.045", this 12-foot liner represents a significant leap forward in MIG welding maintenance and performance. Traditional liners often require precise measuring and trimming, leading to gaps or misalignments that cause erratic arcs and birdnesting. The AccuLock system eliminates these variables entirely.

Error-Proof Installation

The standout feature of the LM3A-12 is its front-loading architecture. Unlike conventional liners that load from the back, this liner is inserted through the front of the gun and locked into place. It is then trimmed flush with the power pin cap at the rear. This process removes the need for measuring tapes or guesswork, ensuring the liner is always the exact length required for your specific gun cable. This precise fitment is critical for maintaining a smooth wire feed path.

Optimized Performance

When the gas diffuser is tightened, it concentrically aligns the contact tip with the liner. This alignment creates a seamless path for the welding wire, significantly reducing friction and drag. The result is a stable arc, reduced burnbacks, and the virtual elimination of birdnesting. For industrial welders using .035 or .045 wire, this liner ensures consistent uptime and higher quality welds.

Compatibility

This liner is compatible with Miller MDX-100 and MDX-250 MIG guns equipped with 12-foot cables. It is an essential consumable for fabricators looking to maintain the reliability of their Miller MDX welding systems.