271321 - Miller Digital Infinity Replacement Auto-Darkening Lens Assembly 271321

Restore Peak Performance with the Miller Digital Infinity Lens Assembly

The Miller 271321 is the direct OEM replacement Auto-Darkening Lens Assembly designed specifically for the Miller Digital Infinity™ Series welding helmets. When your original lens is damaged or malfunctions, this assembly restores the helmet's industry-leading capabilities without the need to purchase an entirely new shell. This unit is engineered with Miller's proprietary ClearLight™ Lens Technology, which optimizes contrast and clarity in welding and light states. By allowing more colors of the visible light spectrum to pass through the lens, ClearLight™ provides a natural, true-color view of the weld puddle, reducing eye strain and improving weld quality.

The assembly boasts a massive 13.4 square inch viewing area, the largest in the Miller lineup, providing an expansive field of view that enhances situational awareness and safety. It features four independent arc sensors that ensure reliable arc detection even in obstructed or out-of-position welding scenarios. The digital interface allows for precise control over shade, sensitivity, and delay settings, and includes the innovative InfoTrack™ 2.0 data monitoring system, which tracks arc time and arc count to help calculate productivity and quote jobs more accurately.

A standout feature of this assembly is X-Mode™. Unlike standard optical sensors that can be triggered by sunlight or blocked by obstructions, X-Mode electromagnetically senses the welding arc. This ensures the lens darkens only when an arc is present, making it ideal for outdoor work or low-amperage TIG welding where sensors might be blocked. The lens supports multiple operating modes including Weld (Shades 8-13), Cut (Shades 5-8), Grind (Shade 3), and X-Mode (Shades 8-13).