6290A-6 - Harris Style 6290-6 Heavy Duty Acetylene Cutting Tip (8-12 Inch Capacity)

Industrial Grade Heavy-Duty Cutting Performance

The GEN6290A-6 is a premium aftermarket replacement cutting tip designed to meet the rigorous demands of heavy industrial fabrication, demolition, and scrap processing. Modeled after the industry-standard Harris 6290 series, this Size 6 tip is engineered specifically for oxy-acetylene cutting applications where material thickness ranges from 8 inches up to 12 inches. The tip features a robust one-piece copper construction, a design choice that maximizes thermal conductivity. This ensures that the tip remains cooler during prolonged high-heat exposure, reducing the risk of flashback and extending the service life of the consumable.

Technically, the 6290-6 utilizes a flat seat sealing surface, which is characteristic of Harris-style equipment. This metal-to-metal seal requires precision machining to ensure a leak-proof connection with the torch head nut. The internal geometry of the tip is optimized for acetylene gas, featuring a central oxygen bore surrounded by a ring of preheat orifices. For a Size 6 tip, the cutting oxygen bore is significantly larger to accommodate the high volume of oxygen (60-75 PSI) required to oxidize and blow through up to a foot of solid steel. The preheat flames are calibrated to bring heavy plate to ignition temperature rapidly without melting the top edge excessively before the cut begins.

Operators utilizing this tip must ensure their gas supply system is capable of delivering the necessary flow rates. Acetylene withdrawal rates for a tip of this magnitude are substantial; therefore, manifold systems or large cylinders are recommended to prevent solvent withdrawal. This generic replacement part offers full compatibility with all genuine Harris cutting attachments and hand torches that accept 6290 style tips, providing a cost-effective alternative without compromising on the metallurgical quality or dimensional accuracy required for precision heavy-section severing.