BTB Series MIG Guns

Bernard® BTB Semi-Automatic MIG Guns deliver the Best of the Best, combining top industrial selections, proven handle styles and trusted components into one lineup.

200-500 AMPS

AIR-COOLED

DUTY-CYCLE 60%

ACCULOCK™ S CONSUMABLES

INDUSTRIAL MIG GUN

5 HANDLE STYLES

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Built tough for heavy-duty work
Highly configurable for the job and the welder
Flexible, time-saving consumables and liners

Overview

Configurable to fit your welder and application.

Bernard® BTB Semi-Automatic MIG Guns deliver industrial-grade performance in the most demanding environments. Built to boost productivity, with standardized consumables that simplify maintenance and cut costs. Configurable to fit your welder and application.

Built tough: Internal cable connections improve conductivity, reduce heat, and extend gun life.
Made to fit: Aluminum armored necks in multiple lengths and angles, plus a comfortable, durable handle, improve weld access and welder comfort.
Easy to maintain: Works with AccuLock™, Centerfire™, Quick Tip™ and TOUGH LOCK™ consumables and front-loading QUICK LOAD™ liners, backed by a lifetime warranty on the rear strain relief.

Specifications

Amperage Rating	300, 400, 500 Amps at 60% duty-cycle
Cooling	Air-Cooled
Wire Size Range	0.030″–1/8″ (0.8–3.2 mm)
Cable Lengths	10 ft, 15 ft, 20 ft, 25 ft
Consumable System	AccuLock S
Handle Styles	Curved B Series Small Handle, Curved B Series Handle, Straight T Series Handle, Small Straight T Series Handle, Small Curved O-Series

Consumables

Recommended: AccuLock™ S
Also compatible: Centerfire™ · Quik Tip™ · TOUGH LOCK®
Limited: TOUGH ACCESS™
Not compatible: AccuLock™ R
See spec sheet for part numbers and details.

Accessories

Sold separately. Refer to the spec sheet for part numbers and details.

Flex Necks
Jump Liners
Q-Neck Coupler
Gun Hanger
Handle Kits
Cable Repair Kits
Neck Grips

Configurator

Open the configurator Reverse lookup my part number

Build Your Gun
Use the Configurator to build your custom gun by walking through the selection process. Choose the options you need for your application and generate the right part number.

Q40  15  A  E  4  D  M  A   →   Q4015AE4DMA
 │    │  │  │  │  │  │  └─ Liner
 │    │  │  │  │  │  └──── Power pin
 │    │  │  │  │  └─────── Wire size
 │    │  │  │  └────────── Consumables
 │    │  │  └───────────── Neck
 │    │  └──────────────── Handle / trigger
 │    └─────────────────── Length (ft)
 └──────────────────────── Amperage

Amperage

Q20	Q30	Q40	Q50
200 A	300 A	400 A	500 A
≤ 1/16″	≤ 5/64″	≤ 5/64″	≤ 3/32″

Length

10	15	20	25
3.0 m	4.6 m	6.1 m	7.6 m

Handle / Trigger

Handle	Fits	Std	Lock	Dual pull	Dual sched.
B Small Curved	Q20, Q30	A	B	C	—
B Curved	Q40	A	B	C	D
T Straight	Q30–Q60	M	N	P	Q
T Small Straight	Q20, Q30	S	—	—	—
O Small Curved	Q20–Q40	T	—	—	—

Neck

	Short 45°	Short 60°	Med 45°	Med 60°	Long 45°	Long 60°
Rotatable	B	C	E	F	H	I
Fixed	O	P	R	S	U	V

Consumables

4	8	9
AccuLock S	Centerfire	AccuLock S

Wire Size

Steel	B	C	D	E	H	I	K	L	M	N
in	.030	.035	.039	.045	.052	1/16	5/64	3/32	7/64	1/8
mm	0.8	0.9	1.0	1.2	1.4	1.6	2.0	2.4	2.8	3.2

Aluminum	Q	R	S
in	.035	3/64	1/16
mm	0.9	1.2	1.6

Power Pin

E	L	M	R	S	T	U
Euro	Lincoln	Miller	Tweco #4 (Miller lead)	Tweco #4 (Lincoln lead)	Tweco #4 (std lead)	Tweco #4 (NAS plug)

Liner

A	C
Front load	Rear load

Most common part numbers

Q4015AE8EMC 400 A, 15′, B Series Curved, Std Trigger, Med 45° Rotatable Neck, Centerfire™, 0.045″, Miller®, Rear Load Liner Q4015AE9EMC 400 A, 15′, B Series Curved, Std Trigger, Med 45° Rotatable Neck, AccuLock™ S, 0.045″, Miller®, Rear Load Liner Q3015AE8EMC 300 A, 15′, B Series Small Curved, Std Trigger, Med 45° Rotatable Neck, Centerfire™, 0.045″, Miller®, Rear Load Liner Q3015AE8XMC 300 A, 15′, B Series Small Curved, Std Trigger, Med 45° Rotatable Neck, Centerfire™, 0.045″ Flush, Miller®, Rear Load Liner Q3015AE9HMC 300 A, 15′, B Series Small Curved, Std Trigger, Med 45° Rotatable Neck, AccuLock™ S, 0.052″, Miller®, Rear Load Liner

Not your setup? Use the Recommendation Guide Walks you through amperage, handle, neck, trigger and consumables and lands you on the right configuration for your work. Download the guide

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