Bernard d-a1-c Acculock S Gas Diffuser Btb Mdx 250

Product Description

The BERNARD d-a1-c is a large, thread-on gas diffuser designed for the AccuLock S Series contact tip retention system. It seats between the contact tip and the gun neck, directing shielding gas flow toward the weld puddle while providing a secure mechanical connection for the contact tip. This part is installed and replaced by professional MIG welders and weld technicians working with Bernard BTB and Miller MDX 250 MIG guns. The thread-on design allows for fast tip changes without tools, reducing downtime during production welding.

This gas diffuser is suited for MIG welding applications in light industrial and production environments where consistent gas coverage and reliable contact tip seating are critical. It is compatible with wire sizes ranging from 0.023 inches to 0.125 inches (1/8 inch), covering the most common solid and flux-core wire diameters used in structural, fabrication, and manufacturing settings.

Key Features

• Thread-on design allows fast, tool-free contact tip changes
• Compatible with wire sizes from 0.023 inches to 0.125 inches
• Part of the AccuLock S Series system for consistent tip retention and alignment
• Large diffuser body supports uniform shielding gas distribution around the weld zone
• Designed for use with Bernard BTB and Miller MDX 250 MIG guns

Compatibility

Designed for use with Bernard BTB and Miller MDX 250 MIG guns as part of the AccuLock S Series contact tip retention system.

Installation Notes

Installation and replacement should be performed by a qualified welder or weld equipment technician. Always power down the welding machine and release any residual wire feed pressure before servicing the gun neck or diffuser. Thread the diffuser onto the gun neck securely by hand, then install the contact tip per the AccuLock S Series procedure. Inspect the diffuser for spatter buildup or damage at each tip change interval.

Technical Specifications

• Wire Size Range: 0.023 inches to 0.125 inches
• Diffuser Size: Large
• Connection Type: Thread-on
Series: AccuLock S

Standard Information

• Brand: BERNARD
• Manufacturer Part Number: d-a1-c