182.0348 - Tuffaloy S-348 Class 2 Swivel Electrode Tip 4 RW Taper

Industrial Grade Tuffaloy S-348 Swivel Tip

The Tuffaloy S-348 Swivel Tip is a premium resistance welding component engineered to address common challenges in industrial spot welding applications. Manufactured by Tuffaloy, a leader in resistance welding products, this electrode is part of the renowned S-Series. It is specifically designed to provide operational flexibility and high-quality weld results in environments where perfect perpendicular alignment between the electrode and the workpiece is difficult to maintain. The core of this product's performance lies in its construction; it is machined from Tuffaloy's proprietary Tuff 77 bar stock, which meets RWMA Class 2 specifications. This chrome-copper alloy offers an optimal balance of electrical conductivity and hardness, ensuring the tip retains its geometry and performance characteristics over repeated thermal cycles.

The defining feature of the S-348 is its ball-jointed swivel head. This mechanical innovation allows the tip face to tilt and adjust automatically when it contacts the workpiece. By compensating for minor misalignments, the swivel action ensures that the entire face of the electrode makes uniform contact with the metal sheet. This uniform pressure distribution is critical for achieving consistent weld nuggets and preventing expulsion or weak welds caused by edge contact. The S-348 features a 7/8-inch "F" style face and a standard No. 4 RW taper, making it compatible with a wide range of standard electrode holders used in automated and manual spot welding setups.

It is important to note the cooling characteristics of the S-Series. Unlike some other swivel designs, the water cooling hole in the S-348 does not extend into the swivel head itself. This design choice simplifies the internal structure while still providing adequate cooling for the shank and body of the electrode. The total physical length of the unit is 2-1/64 inches, providing a compact profile suitable for tight tooling fixtures. For fabrication shops and manufacturing plants requiring reliable, non-marking spot welds on complex assemblies, the Tuffaloy S-348 is an essential consumable that enhances process control and finish quality.