9SS26711 - Lincoln S26711 Replacement Knob for Magnum 100SG

Precise Replacement for Magnum 100SG Maintenance

The Locking Knob for Magnum 100SG Spool Gun is a critical replacement component designed to restore the functionality of your Lincoln Electric spool gun. Identified by the industry standard part number S26711, this knob serves the essential function of securing the clear plastic canister cover to the main body of the gun. In spool gun welding—often utilized for aluminum applications—protecting the wire from shop dust, grinding debris, and atmospheric contaminants is vital for preventing porosity and ensuring consistent arc characteristics. This knob ensures that the protective enclosure remains sealed during operation.

Manufactured to meet the original dimensional specifications of the Magnum 100SG, this locking knob features a durable threaded stud and a molded plastic head designed for tool-free operation. The ergonomic design allows operators to quickly change 1lb wire spools (4-inch diameter) efficiently, minimizing downtime between spool changes. The material is selected for its resistance to impact and thermal stress common in welding environments, ensuring a long service life even under rigorous daily use.

Failure of the locking mechanism can lead to the spool cover becoming loose or detaching, which exposes the filler metal to contamination and risks mechanical damage to the wire feeding path. By replacing a lost or stripped knob with this direct-fit part, maintenance personnel and fabricators ensure the structural integrity of the spool housing is maintained. This part is compatible specifically with the Magnum 100SG model often paired with Power MIG series welders.