0558005077 - ESAB Oxweld 1566HS Size 2-1/2 Natural Gas/Propane Machine Cutting Tip

Technical Overview of the ESAB 1566HS-2-1/2 Nozzle

The ESAB Oxweld 1566HS-2-1/2 (SKU: 0558005077) is a specialized cutting nozzle engineered for high-performance machine cutting applications utilizing alternative fuels such as Natural Gas and Propane. As a member of the distinguished Oxweld 1566 series, this nozzle is characterized by its two-piece construction, featuring a precision-machined brass inner member and a durable copper outer sleeve. This configuration is essential for alternative fuel gases, as it allows for the external mixing of fuel and oxygen, mitigating the risk of flashback while ensuring a stable, high-temperature preheat flame.

The "HS" nomenclature denotes a High-Speed design, which incorporates a divergent bore geometry in the cutting oxygen channel. Unlike standard straight-bore tips, the divergent bore expands the oxygen stream as it exits the nozzle, accelerating the gas to supersonic velocities. This results in a tighter, more coherent oxygen stream that maintains its energy over a greater distance, enabling significantly faster cutting speeds and the ability to cut thicker sections with reduced kerf width. The size 2-1/2 orifice is calibrated for heavy-section cutting, making it an ideal choice for industrial fabrication environments processing thick steel plates.

Externally, the nozzle is finished with a heavy chrome plating. This is not merely aesthetic; the chrome surface provides a high degree of hardness and heat reflectivity, preventing molten slag and spatter from adhering to the tip during operation. This feature is particularly beneficial in machine cutting where continuous duty cycles can lead to rapid heat buildup and spatter accumulation. By maintaining a clean tip face, the 1566HS-2-1/2 ensures consistent gas flow dynamics and reduces the frequency of downtime required for tip cleaning and maintenance.

Designed for compatibility with Oxweld machine torches, this nozzle integrates seamlessly into existing automated cutting setups. The internal gas paths are optimized to maximize the calorific value of Natural Gas and Propane, providing a heavy preheat flame capable of bringing thick plate to ignition temperature rapidly, thereby reducing dwell time at the start of a cut.