256509 - Miller Digital Performance Replacement Auto-Darkening Lens Assembly

OEM Replacement Lens for Digital Performance Series

The Miller 256509 is the official replacement Auto-Darkening Lens Assembly designed specifically for the Miller Digital Performance™ Series of welding helmets. As a critical component of personal protective equipment, this assembly ensures that operators maintain optimal visibility and protection against harmful UV and IR radiation during welding operations. This unit is a direct drop-in replacement for the original ADF found in Digital Performance shells, ensuring that the retention mechanism and external controls align perfectly without modification.

Technically, the 256509 assembly features advanced digital circuitry that manages three independent arc sensors. These sensors provide a switching speed of 1/20,000 of a second, ensuring immediate darkening upon arc initiation. The digital interface allows for granular control over essential parameters including shade, sensitivity, and delay. The unit supports three distinct operating modes: Weld Mode (Shades 8-13) for general welding applications, Cut Mode (Shades 5-8) for plasma or oxy-fuel cutting, and Grind Mode (Shade 3) for clear visibility during material preparation. The assembly is powered by replaceable lithium batteries with solar assist, maximizing service life.

For MRO managers and safety officers, stocking genuine OEM replacement lenses like the 256509 is essential for maintaining fleet compliance and safety. Using non-OEM or universal lenses in specific helmet shells can compromise the safety rating (ANSI/CSA) of the headgear. This assembly maintains the original optical clarity and impact rating of the helmet system. It is shipped as a complete unit, ready for immediate installation, minimizing downtime for welders on the floor.