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Q4015AE8EMC - Bernard Q40 400A MIG Gun, 15ft, Miller Back, .045 Wire

Packaging: 1 per each
$1,237.33/ea $871.27/1 per each only $871.27/eaSave 30%

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OVERVIEW

Maximize Comfort and Uptime with the Bernard BTB Q40

Welders know that the gun in their hand is their primary connection to the work. The Bernard BTB Q40 MIG Gun (Q4015AE8EMC) is engineered to make that connection as comfortable and reliable as possible. Featuring the ergonomic B Series curved handle, this 400-amp gun sits naturally in the hand, reducing wrist strain and fatigue during long welding shifts. The 15-foot cable offers the freedom to move around large parts without constantly repositioning the wire feeder, while the industrial-grade strain relief ensures the cable withstands the rigors of the shop floor.

One of the standout features for professional welders is the 45-degree rotatable neck. Unlike fixed-neck guns that force you into awkward positions, the Bernard Q40 allows you to rotate the neck with a simple hand adjustment—no tools required. This flexibility means you can maintain the optimal gun angle even in tight corners or overhead positions. Additionally, the gun comes standard with Centerfire™ consumables. The threadless contact tips drop right in and are held securely by the nozzle, ensuring the tip stays centered for consistent arc performance. This design also means you won't be fighting with seized threads when it's time to change a tip.

Reliability is built into every component. The Q4015AE8EMC utilizes a Jump Liner system, which addresses the most common cause of feeding issues: a kinked or clogged liner in the neck. Instead of replacing the entire 15-foot liner, you simply replace the short Jump Liner in the neck, saving time and money. With a 100% duty cycle rating using CO2, this gun is ready to push wire all day long without overheating. Whether you are in shipbuilding, heavy equipment manufacturing, or structural fabrication, the Bernard BTB Q40 delivers the consistency and durability professional welders demand.

Why Choose the Bernard Q40?

  • Industrial Durability: Built to withstand abusive environments and high-heat applications.
  • Operator Comfort: Curved handle and rotatable neck minimize physical stress.
  • Easy Maintenance: Centerfire consumables and Jump Liners make parts changes fast and tool-free.
  • Seamless Integration: Connects directly to your existing Miller equipment.
Additional Information
Amperage:400
Length:15 ft
Wire Size:0.045"
Back End:Miller
Brand:Bernard
Front End:Bernard
Cooling Method:Air Cooled
Duty Cycle:100% (CO2), 60% (Mixed Gas)
Neck Angle:45 Degree
Handle Style:Curved B Series
Consumable Series:Centerfire
Liner Type:Conventional, Jump Liner
Packaging Description:1 per each
Amps:400amp

INCLUDED

  • Bernard BTB Q40 400A MIG Gun (15 ft)
  • Centerfire Contact Tip (.045")
  • Centerfire Nozzle (5/8" Bore)
  • Centerfire Gas Diffuser
  • Universal Conventional Liner
  • Jump Liner
  • Miller Power Pin
  • 45 Degree Rotatable Neck

APPLICATIONS

  • Heavy Equipment Manufacturing
  • Shipbuilding and Marine Repair
  • Pipeline Welding
  • Structural Steel Fabrication
  • Construction
  • General Maintenance and Repair
  • Railcar Manufacturing
  • Automotive Manufacturing

FAQ

This gun is rated at 400 Amps at 100% duty cycle when using CO2 shielding gas. When using mixed gases, the rating is typically 60% duty cycle.

Yes, this specific model (Q4015AE8EMC) is equipped with a Miller® style direct plug backend, making it compatible with most Miller wire feeders and Millermatic machines.

It uses Bernard Centerfire™ consumables, including Centerfire contact tips (T-series), nozzles (N-series), and gas diffusers (D-series).

Yes, the gun features a rotatable neck design that allows you to adjust the neck angle without using any tools.

The gun comes configured for .045 inch (1.2 mm) welding wire.

A Jump Liner is a short liner segment located in the neck of the gun. It allows you to replace just the high-wear area of the liner without replacing the entire gun liner, saving cost and time.

This model features the B Series Curved Handle for improved ergonomics.

The cable length is 15 feet.

CATALOGUE & SPEC SHEETS

Spec Sheet