0700300499 - ESAB Blue Steel MIG Liner 0.8-1.0mm (1.7m)

Technical Overview of the ESAB Blue Liner 1.70M

The ESAB 0700300499 is a specialized MIG gun liner designed to facilitate the smooth transport of welding wire from the feeder to the contact tip. Engineered with a specific length of 1.70 meters, this liner is intended for use in specific torch configurations, potentially including short-assembly manual torches, robotic neck assemblies, or specialized push-pull systems where standard 3-meter or 4-meter liners are unsuitable. The liner is constructed from high-grade spiral steel, providing the necessary rigidity to prevent kinking while maintaining flexibility for torch manipulation.

Color-coded Blue according to industry standards, this liner is calibrated for wire diameters between 0.8mm and 1.0mm (approximately 0.030 to 0.040 inches). This internal diameter tolerance is critical; a liner that is too large can cause the wire to snake, leading to an erratic arc, while a liner that is too tight increases friction and strain on the drive rolls. This component is optimized for solid mild steel wires, offering low friction coefficients to ensure consistent wire feed speeds (WFS) and stable electrical conductivity transfer at the contact tip.

Regular maintenance of the wire conduit is essential for industrial welding operations. Over time, liners accumulate copper dust, dirt, and drawing lubricants, which increase drag. Replacing the liner with this genuine ESAB part ensures that the welding system operates at peak efficiency, minimizing downtime associated with feed failures. It is compatible with various ESAB torch platforms that utilize the standard Euro-style or ESAB-specific backend connections requiring this specific length.