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Bernard™ MIG Gun Head Tube Liner
By
Airgas Part #:BER43115X
Manufacturer Part #:43115X
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$49.04
Each
$49.04
/Each
Item Details
- The ITW Miller / Bernard 43115X is an industrial-grade, polymer-constructed internal MIG wire feed conduit liner designed for feeding soft aluminum and specialized wires. It serves as a low-friction pathway inside 15-foot MIG guns to prevent bird-nesting, wire shaving, and erratic arc performance in Gas Metal Arc Welding (GMAW) applications.
Features
- Nylon/PTFE Composite: Combines structural rigidity with surface slickness to reduce friction for soft aluminum wire
- Anti-Shaving Architecture: Smooth-bore internal wall prevents sharp edges from slicing wire and clogging gas diffusers
- Gapless Bend Memory: Maintains concentric internal diameter when torch cable is twisted or bent
- Bird-Nesting Elimination: Lowers push-friction values to prevent wire buckling at the feeder drive housing
- Arc Stability: Uniform wire feed velocity yields stable welding voltage and reduced spatter
- Thermal Resistance: Formulated to withstand radiative and conductive heat up to 400A
- Integrated Brass Backend: Anchors into power pin using direct pressure to prevent gas leaks or liner slippage
- Precision Trim Specification: Requires 3/4" (19.0 mm) extension from the edge of the head tube
Specifications
- Manufacturer: ITW Welding / Bernard
- Part Number (MPN): 43115X
- Universal Product Code (UPC): 662991036828
- Primary Material Matrix: High-Density Extruded Virgin Nylon / Polytetrafluoroethylene (PTFE) Compound
- Amperage Rating Compatibility: 200A to 400A continuous (Max service boundary up to 600A)
- Wire Diameter Capacity: 0.035" (0.9 mm) to 3/64" (1.2 mm) / 0.045"
- Overall Length: 15 Feet (4.88 Meters)
- Liner Type: Conventional Rear-Loading, Field-Trimmable
- Internal Profile: Smooth-bore ultra-low coefficient friction channel
- End-Termination Fittings: Integrated brass retention compression ferrule with rubber O-ring seal
- Manufacturing Standards: ISO 9001
- Compliance: OSHA, CSA, CE
Applications
- Marine & Shipbuilding: Fabrication of aluminum hulls, decks, and superstructure bulkheads
- Transportation & Automotive: Production of aluminum trailer frames, tanker bodies, and vehicle structural components
- Signage & Architecture: Structural outdoor commercial signs and architectural frames
- Pressure Vessel Fabricators: Pulsed-MIG aluminum profiles on storage vessels and cooling infrastructure
- Industrial Wire Feeders: Direct-plug configurations natively coupled to Miller power sources
