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:
| 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 |
