Bernard Dura-Flux Self-Shielded FCAW Gun 350 A

Name: Bernard Dura-Flux Self-Shielded FCAW Gun 350 A – Datasheet
Brand: Bernard
SKU: Dura-Flux

A 350 A gun for self-shielded flux-cored wire

The Bernard Dura-Flux series are self-shielded flux-cored (FCAW) MIG welding guns rated at 350 A with a duty cycle of 60 % NEMA at 350 A. Bernard lists them for commercial truck and trailer, construction and infrastructure, heavy equipment, MRO, oil and gas and shipbuilding applications. The series comes in two designs that share one spec sheet: a gun with a replaceable power cable liner for 0.045 to 1/16 in (1.2 to 1.6 mm) wire, and a gun with a fixed power cable liner for 1/16 to 3/32 in (1.6 to 2.4 mm) wire.

Technical specifications

Parameter	Specification
Manufacturer	Bernard (ITW Welding)
Model	Dura-Flux series self-shielded FCAW MIG guns
Process	Self-shielded flux-cored (FCAW), MIG (GMAW) welding
Rated output	350 A
Duty cycle	60 % NEMA at 350 A
Replaceable power cable liner version	Wire 0.045 to 1/16 in (1.2 to 1.6 mm); Quik Tip contact tips T1045 (0.045 in, included), T1052, T1116 (1/16 in); jump liner QJL-116; liners 444710, 444715, 444725 for 10, 15 and 25 ft
Replaceable version necks	Sleeved 6 in x 30 degrees (1370239), 6 in x 60 degrees (1370240), 12 in x 30 degrees (1370241), 12 in x 60 degrees (1370242); R2 in x 70 degrees (7010068)
Fixed power cable liner version	Wire 1/16 to 3/32 in (1.6 to 2.4 mm); Centerfire contact tips T-062, T-072, T-078, T-094
Fixed version necks	Sleeved 6 in x 30 and 60 degrees, 8 in x 90 degrees, 12 in x 30 and 60 degrees; aluminium armoured 6 in x 30 and 60 degrees, 8 in x 90 degrees, 12 in x 60 degrees
Power pin kits	Tweco 4 (1880253), Miller (1880251), Lincoln (1880252), Euro (1880254)
Handle options	Standard trigger and optional dual schedule switch handle kits (1880255, 1880256 on the replaceable version)
Spec sheet	Index No. DF/2.8, issued January 2026

Replaceable liner or fixed liner

The replaceable-liner design suits shops that want quick power cable maintenance. It has internal trigger leads, so there is no trigger cord to catch on surrounding objects, a molded handle designed to reduce operator fatigue, a lightweight rotatable Hi-Viz neck for better weld visibility, and Quik Tip contact tips with a threaded taper lock for good heat transfer.

The fixed-liner design uses an ultra heavy-duty steel monocoil power cable that Bernard describes as highly resistant to kinking, for exceptional wire feed in abusive environments. It takes Centerfire contact tips, which Bernard says provide better arc starts and less spatter, and its sleeved and aluminium armoured necks come in several lengths.

Matching the gun to the wire

Self-shielded flux-cored wire is chosen for outdoor and field work where gas shielding would be disturbed by wind. Choose the version by wire diameter first: 1.2 to 1.6 mm wire points to the replaceable-liner gun, 1.6 to 2.4 mm wire to the fixed-liner gun. Then select the power pin for the feeder, the neck length and angle for joint access, and a standard or dual schedule handle. Confirm the wire manufacturer recommended current range against the 350 A and 60 % duty rating.

Documents and quotation

The attached Bernard gives the ordering information and parts listed on this page. For a quotation please send the model, amperage, cable length, neck and handle options, the wire type and diameter, the consumable series and the feeder connection you need. Related products are listed under TIG torches and MIG guns.

Bernard product groups

The range covers semi-automatic air-cooled guns such as BTB, TGX, S-Gun and PipeWorx, water-cooled T-Gun and W-Gun models, fume extraction guns, the IronPro self-shielded flux-cored gun, and the AccuLock, Centerfire and TOUGH LOCK consumables, liners and necks that go with them. Bernard lists offshore oil and gas, construction and infrastructure, heavy equipment, rail and ship among the industries it serves.

Frequently Asked Questions