106-7 - Generic 106-7 Propane Cutting Tip for Koike Torches - Size 7

Heavy-Duty Propane Cutting Performance

The Generic 106-7 Cutting Tip is a high-performance aftermarket replacement designed to fit Koike-style oxy-fuel cutting torches. Engineered specifically for use with alternative fuel gases such as Propane and Natural Gas, this tip belongs to the widely used 106 series. The "Size 7" classification indicates its capability to handle extremely heavy-duty applications, making it suitable for severing steel plates ranging from approximately 10 to 12 inches in thickness. This makes it an essential consumable for scrap yards, heavy fabrication shops, and demolition crews where deep cutting capacity is required.

Construction and Durability

Manufactured with a copper core for excellent thermal conductivity, this tip features a durable chrome-plated exterior. The chrome finish serves a dual purpose: it reflects radiant heat away from the tip during the prolonged cutting cycles required for thick metal, and it significantly reduces the adhesion of molten spatter. This resistance to spatter buildup ensures that the preheat holes remain clear longer, reducing the frequency of cleaning and downtime. The tip utilizes a standard speed design with a heavy preheat flame characteristic, which is necessary to bring thick carbon steel to ignition temperature when using propane, a fuel gas with a lower specific heat output in the primary cone compared to acetylene.

Operational Efficiency

The internal geometry of the 106-7 is precision-machined to ensure a stable, non-turbulent flow of cutting oxygen. For cuts of this magnitude (up to 12 inches), stream coherence is critical; a wandering oxygen stream can result in gouging or incomplete severance. This generic replacement mimics the OEM specifications to provide a clean kerf and reliable drop cuts. Users switching from acetylene to propane for heavy section cutting will appreciate the economy of the 106 series, as propane is often more cost-effective for the high-volume gas consumption associated with thick plate processing.