140-1408 - Tuffaloy Truncated Spot Welding Electrode #4 RW Taper 2-Inch Length

High-Performance Resistance Welding Electrode

The Tuffaloy 140-1408 is a precision-engineered resistance welding electrode designed to meet the rigorous demands of industrial spot welding applications. Manufactured by Tuffaloy, a leader in resistance welding products, this tip features a truncated nose profile. The truncated design is specifically engineered to handle higher electrode forces compared to pointed tips, providing a larger, more stable contact area that minimizes tip deformation and mushrooming over extended use. This structural integrity is crucial for maintaining consistent weld nugget size and quality in high-volume production environments.

Dimensionally, the electrode has an Overall Length (OL) of 2 inches and a diameter of 0.463 inches, which corresponds to the standard #4 RW (Resistance Welder Manufacturers' Association) taper. This ensures compatibility with a wide range of standard electrode holders and spot welding machines. The precise machining of the taper guarantees a secure, leak-free fit that maximizes coolant flow and electrical transfer efficiency. The "Spotaloy" material composition offers an excellent balance of hardness and electrical conductivity, ensuring that the tip remains cool and conductive even during rapid cycling.

A standout feature of this Tuffaloy electrode is its surface finish. The bright, shiny appearance is not merely aesthetic; it is the result of a specialized passivation process. This chemical treatment removes free iron and other contaminants from the surface, significantly inhibiting oxidation. By eliminating the oxide layer that typically forms on stored copper products, Tuffaloy ensures that the 140-1408 provides low contact resistance immediately upon installation, reducing the need for pre-cleaning or dressing before the first weld.

Key Technical Specifications:

• Nose Configuration: Truncated (Type A)
• Taper: #4 RW (.463" Major Dia)
• Length: 2.00 Inches
• Finish: Passivated/Anti-Oxidation