0459121881 - ESAB Sentinel A50 Headgear Rear Plate Replacement

Technical Overview of the ESAB Rear Plate Middle Size

The ESAB Rear Plate Middle Size (SKU: 0459121881) is a critical component of the proprietary Halo™ headgear system utilized in ESAB Sentinel A50 and A50 Air welding helmets. This component serves as the central structural element for the rear section of the 5-point adjustable headgear, providing the necessary anchor point for the adjustment mechanism and cushioning pads. Manufactured to precise OEM specifications, this plate ensures that the ergonomic balance of the helmet is maintained, preventing the front-heavy sensation common in improperly fitted welding hoods.

Constructed from durable, high-impact polymer, the rear plate is designed to withstand the rigors of daily industrial welding environments. It features specific molding to accommodate the Sentinel's unique ratcheting system, allowing for micro-adjustments that are essential for operator comfort and safety. As a genuine ESAB spare part, it guarantees seamless integration with the existing headgear assembly without the need for modification. Replacing a damaged or worn rear plate is vital for maintaining the helmet's stability rating and ensuring that the auto-darkening filter remains properly positioned relative to the user's eyes.

For MRO managers and safety officers, stocking genuine replacement parts like the 0459121881 ensures that personal protective equipment (PPE) remains compliant and functional. The Halo headgear is renowned for its comfort, and the rear plate is a key factor in its performance. Failure of this component can lead to helmet slippage, which compromises safety during overhead or out-of-position welding. This replacement part restores the headgear to factory standards.