K4175-3 - Lincoln Electric Viking 1840 Series Aztec Auto-Darkening Helmet

Superior Optics in a Compact Shell

The Lincoln Electric VIKING™ 1840 Aztec™ Welding Helmet (K4175-3) represents the intersection of professional-grade optical performance and everyday usability. Designed for fabricators who require precision without the bulk of larger helmet models, the 1840 Series features Lincoln's proprietary 4C® Lens Technology. This advanced filter technology upgrades the welding experience by minimizing the traditional lime-green tint found in older auto-darkening filters, replacing it with a true-color view that improves visibility of the weld puddle and reduces eye strain during long shifts.

With a perfect 1/1/1/1 optical clarity rating according to EN379 standards, this helmet ensures no blurriness, distortion, or inconsistent shading across the viewing area. The 3.78 x 1.85-inch viewing cartridge provides ample field of vision for general fabrication, automotive work, and intricate TIG welding. The helmet is TIG rated down to 3 amps, making it exceptionally sensitive and reliable for low-amperage precision work.

Operational efficiency is enhanced by the external grind button, a feature highly valued in industrial environments. This low-profile button allows operators to switch between weld and grind modes without removing the helmet or lifting the front, thereby maintaining safety compliance and productivity. The shell itself is compact and lightweight, weighing approximately 18.6 oz, which significantly reduces neck fatigue over prolonged use. The pivot-style headgear ensures a secure fit that can be adjusted to accommodate various head shapes and personal preferences.

The K4175-3 comes complete with a comprehensive accessory kit, including extra cover lenses and a helmet bag, ensuring the unit is ready for immediate deployment in any workshop environment. Backed by a 3-year warranty, the Viking 1840 Aztec is a robust investment for professionals seeking reliability and clarity.