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4953 - Bernard 4953 Head Liner .030-.052

Packaging: 1of1
$21.26/ea

Usually ships within 3-5 business days

SKU: BER4953 Categories: ,

OVERVIEW

Technical Overview of the Bernard 4953 Guide Tube

The Bernard 4953 Guide Tube is a specialized head liner designed for use with Bernard Q-Gun, S-Gun, and T-Gun series MIG welding guns. This component is engineered to bridge the gap between the main cable liner and the contact tip, situated primarily within the curved neck assembly of the torch. It is calibrated to accommodate welding wire diameters ranging from 0.030 inches to 0.052 inches, making it a versatile part for various fabrication applications.

Manufactured from high-quality brass, the 4953 guide tube offers superior wear resistance and low friction coefficients compared to standard steel liners. This material choice is critical for maintaining the integrity of the welding wire as it navigates the bend of the gun neck, reducing the likelihood of wire shaving or micro-arcing inside the component. Proper installation of the guide tube ensures that the wire remains centered and supported right up to the gas diffuser and contact tip.

In industrial MRO contexts, regular inspection and replacement of the head liner are essential for preventative maintenance. A worn guide tube can lead to erratic wire feeding, increased resistance on the drive rolls, and ultimately, downtime due to birdnesting or burnback. The Bernard 4953 is an OEM-quality replacement that restores the gun's performance to factory specifications.

Key Specifications:

  • Part Number: 4953
  • Wire Compatibility: 0.030" to 0.052" (0.8mm - 1.4mm)
  • Material: Brass
  • Application: Neck/Head assembly liner
Additional Information
Packaging Description:1of1
Item:Guide Tube, Head Liner, Inlet Guide
Brand:Bernard
Wire Size:0.030-0.052
Fits Which Model:Bernard Q-Gun, Bernard S-Gun, Bernard T-Gun
Material:Brass
Part Number:4953
Component Type:Neck Liner

INCLUDED

  • 1 x Bernard 4953 Guide Tube (.030" - .052")

APPLICATIONS

  • General Fabrication
  • Heavy Equipment Repair
  • Automotive Welding
  • Structural Steel Welding
  • Shipbuilding

FAQ

The Bernard 4953 guide tube is designed for wire diameters ranging from 0.030 inches to 0.052 inches.

This guide tube, also known as a head liner or jump liner, installs in the neck (gooseneck) of the MIG gun, between the main cable liner and the contact tip.

Yes, this guide tube is commonly used in Bernard guns that utilize Centerfire, Quik Tip, or Elliptical consumable systems, provided the gun model is a Q-Gun, S-Gun, or T-Gun.

You should replace the guide tube if you experience erratic wire feeding, notice keyholing (oval wear) at the exit of the tube, or if the wire is shaving/clogging inside the neck.

It is typically manufactured from brass, which provides good conductivity and wear resistance against steel welding wires.

While it can physically fit the size, aluminum wire typically requires nylon or teflon liners to prevent shaving. This brass liner is best suited for steel, stainless steel, or flux-cored wires.

No, this is a separate component located in the gun head. The main liner runs through the cable assembly up to the back of the neck or diffuser.

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