1501390 - Harris 6290-2VVC High Speed Machine Cutting Tip Size 2

Technical Overview of the Harris 6290-2VVC

The Harris Model 6290-2VVC is a specialized two-piece machine cutting tip designed to optimize performance when using alternate fuel gases such as propane and natural gas. Unlike standard general-purpose tips, the VVC series is engineered specifically for high-speed machine cutting applications where precision and thermal control are paramount. The tip features a heavy-duty construction comprising a brass internal shell and an electroless nickel-plated outer shell. This plating is not merely cosmetic; it reflects radiant heat to keep the tip cooler during prolonged operation and resists the adhesion of spatter, ensuring consistent flow characteristics over the life of the consumable.

This Size 2 tip is calibrated for cutting mild steel in the range of approximately 1 inch to 2 inches (25mm to 50mm), depending on specific gas pressure settings and travel speeds. The internal geometry includes a .088 cup depth which stabilizes the preheat flame, allowing for rapid starts and sustained high-speed travel without flame blowout. By focusing the preheat flame and optimizing the oxygen stream, the 6290-2VVC minimizes the kerf width. A narrower kerf translates directly to less material waste and, more importantly, a reduction in the total heat input into the base metal. Lower heat input is critical in machine applications to prevent thermal distortion and warping of the workpiece.

Operators should note that this tip is strictly for use with alternate fuels (Propane, Natural Gas, MAPP) and is not compatible with Acetylene. The two-piece design separates the preheat gas mixing from the cutting oxygen until they exit the tip, a safety and performance feature standard for alternate fuels. The tip fits all standard Harris-style machine torches and compatible equipment, making it a versatile addition to industrial fabrication environments, shipbuilding yards, and structural steel processing facilities.