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14201113 - Tweco Style 42-3545-15 MIG Gun Liner 15ft for .035-.045 Wire

Packaging: 1 per each
$70.06/ea $32.88/1 per each only $32.88/eaSave 53%

In stock

SKU: TWE1420-1113 Categories: , ,

OVERVIEW

Reliable Wire Feeding for Industrial Fabrication

The Tweco 1420-1113 Universal Conduit Liner is a critical replacement component designed to restore and maintain the performance of your MIG welding equipment. Engineered for professional environments, this liner is compatible with a wide range of Tweco-style MIG guns, specifically the popular No. 1 and No. 2 series, as well as various Mini-MIG systems. It is sized to accommodate welding wires ranging from .035" to .045" (0.9mm to 1.2mm), covering the most common diameters used in structural steel and general fabrication.

Manufactured from high-quality zinc-plated spring steel, this conduit liner provides a smooth, low-friction path for the welding wire. The plating process enhances corrosion resistance, preventing rust buildup inside the cable assembly that can lead to increased drag and erratic feeding. With a total length of 15 feet (4.5 meters), it is ready to install in standard length guns but can be easily trimmed for 10-foot or 12-foot assemblies, making it a versatile stock item for maintenance departments.

Consistent wire feeding is paramount for weld quality. A worn or kinked liner is a leading cause of arc instability, burn-back, and bird-nesting at the drive rolls. By replacing your liners at regular intervals with the Tweco 1420-1113, you ensure that your fleet operates at peak efficiency with minimal downtime. This product meets the rigorous demands of heavy manufacturing, automotive repair, and construction applications.

Key Technical Specifications

  • Part Number: TWE1420-1113 (Replaces 42-3545-15)
  • Wire Compatibility: .035" - .045" Solid or Flux-Cored Wire
  • Length: 15 Feet (Trim to fit)
  • Material: Wound Spring Steel, Zinc Plated
Additional Information
Brand:Tweco
Item:Liner
Length:15 ft
Wire Size:0.035" - 0.045"
Packaging Description:1 per each
Material:Zinc Plated Spring Steel
Compatible Gun Series:Tweco No. 1, Tweco No. 2, Mini-MIG
Wire Type Compatibility:Solid Steel, Flux Cored

INCLUDED

  • 1 x Universal Conduit Liner (.035-.045 / 15ft)

APPLICATIONS

  • General MIG Welding (GMAW)
  • Flux Cored Arc Welding (FCAW)
  • Automotive Repair
  • Structural Steel Fabrication
  • Maintenance and Repair Operations (MRO)

FAQ

This liner is a 'Universal' Tweco style replacement, designed to fit Tweco No. 1 and No. 2 series guns and many clones. If your gun uses a standard brass stop at the back end and is 15 feet or shorter, this will likely fit.

No, this is a steel wound liner. For aluminum welding, you should use a Teflon or Nylon liner to prevent the soft aluminum wire from shaving or binding inside the coil.

Yes. You simply install the liner from the back of the gun and trim the excess length at the front (nozzle end) according to your gun manufacturer's instructions.

It is designed for wire diameters between .035" (0.9mm) and .045" (1.2mm). Using significantly smaller wire may cause feeding issues, and larger wire will not fit.

It depends on usage, but generally, you should replace it whenever you experience erratic feeding that isn't solved by changing contact tips. In heavy industrial use, this might be monthly; for hobbyists, once a year.

This SKU typically includes the wound steel liner with the crimped brass stop at the back end. O-rings are usually sold separately or reused from the existing setup if in good condition.

The zinc plating provides corrosion resistance and a smoother surface finish, which reduces friction against the welding wire and extends the lifespan of the liner.