94048123 - AirPro X4000 Torch Handle Upper Arm and Pivot Pin Kit

Technical Overview of the AirPro X4000 Upper Arm & Pin

The AirPro X4000 Upper Arm & Pin (SKU: 94048123) is a specialized replacement component designed specifically for the handle assembly of AirPro X4000 series welding torches. This part is critical for the mechanical operation of the torch handle, often serving as the upper lever or structural cover that secures the internal components and facilitates proper ergonomic handling. The kit includes both the molded upper arm unit and the necessary steel pivot pin, ensuring a complete repair solution for technicians and maintenance personnel.

Manufactured to meet the original equipment specifications of the AirPro X4000 system, this upper arm is constructed from high-impact, heat-resistant industrial plastic. This material selection is essential for withstanding the thermal cycling and mechanical stress typical of industrial welding environments. The accompanying pin is precision-ground to fit tightly within the pivot point, reducing play and ensuring a smooth action if the arm is part of a movable trigger or vacuum regulation mechanism. Proper installation of this component is vital for maintaining the torch's IP rating and protecting internal cabling from dust and debris.

In MRO contexts, replacing the upper arm and pin is a common procedure when the torch has been subjected to drops, impact damage, or excessive wear from heavy usage. Failure to replace a cracked or loose upper arm can lead to misalignment of the torch neck, compromised trigger response, or exposure of live electrical components. This part integrates seamlessly with the existing lower handle assembly of the AirPro X4000, requiring no modification for fitment. It is an essential stock item for facilities utilizing AirPro fume extraction or standard MIG systems to minimize downtime.