PRODUCT UPDATE | New Power Pin Option for IronPro™ Series FCAW Guns

PRODUCT UPDATE | New Power Pin Option for IronPro™ Series FCAW Guns

We have expanded the power pin options available for our IronPro™ Series FCAW Guns. Power pin 2200363 (pictured below) is specifically designed for use in self-shielded flux-cored applications on a wide range of Lincoln® LN-25® feeder models.

You may order the following IronPro 350 FCAW Guns with this power pin:

10 ft. 15 ft.
GL3510MLNZ  GL3515MLNZ
GL3510MSXZ  GL3515MSXZ

If you have any questions, please call or email our Customer Service team at 855.644.9353 (MIGWELD) or cs@itwmig.com.

DISCONTINUED PRODUCT | Elliptical Diffusers

DISCONTINUED PRODUCT | Elliptical Conversion Diffusers

Effective June 20th, 2025, the following Elliptical series diffusers will be discontinued from our product offering:

Part Number
4235T
4335T
4435T
4635T
4635T-116

These diffusers allowed Elliptical series consumables to be compatible with Tweco® and Tregaskiss® style MIG guns. While there are no direct replacements for these parts, we suggest converting to AccuLock™ S consumables. For Tweco® style MIG guns, AccuLock™ S consumables can be installed by using adaptor 1380030. No adaptor is needed for Tregaskiss® MIG guns.

For an easy change-over, we offer AccuLock™ S conversion kits complete with a variety of tips, nozzles, diffusers and Tweco® adaptor. Kit Part Number: ALCSK-1

If you have any questions, please contact Customer Service by phone 855.MIGWLED (644.9353) or by email cs@itwmig.com.

PRODUCT UPDATE — Configurator Simplification, BTB Semi-Automatic MIG Gun

PRODUCT UPDATE – Configurator Simplification,
BTB Semi-Automatic MIG Gun

Effective April 22, 2025, we have simplified our BTB MIG Gun configurator selections. Check out your Best of The Best MIG Gun options below:

  • Cable: Available in 200, 300, 400, 500 or 600 amps from 10, 15, 20 to 25 ft (no changes)
  • Handles: Chose from B Series (small, large), O Series (small), or T Series (small, large)
  • Consumables: Configurable with AccuLock™ S for Front Load or Rear Load liners, or Centerfire™ with Rear Load liners
  • Power Pin: Available options include Miller®, Lincoln®, Euro Or Tweco® #4

BTB MIG Gun configurations that include options not listed above will still remain available for purchase. Our Reverse Lookup tool can help provide a parts breakdown for ordering information.

If you have any questions or would like more information, please contact Customer Service by phone at 1.855.MIGWELD (644.9353) or email at cs@itwmig.com.

Mastering MIG welding with adjustments, equipment and techniques

Mastering MIG welding with adjustments, equipment and techniques

Discover essential adjustments, equipment tips, and expert techniques to accelerate your MIG welding game by reading our article in the October issue of The Welder. You’ll learn how to balance voltage and wire feed speed for flawless welds, select the right welder and shielding gas, and master gun angle and travel speed. Plus, we’ll guide you through troubleshooting common challenges to ensure consistent, high-quality results. Don’t miss out on transforming your welding skills—dive into the full article now!

PACKAGING UPDATE — New Bernard® BTB and TGX™ MIG Gun Boxes

PACKAGING UPDATE — New Bernard® BTB and TGX™ MIG Gun Boxes

Our Bernard® BTB and TGX™ MIG Gun boxes are undergoing a packaging change with a fresh new look. While the exterior is changing, the MIG guns inside remain the same — delivering the trusted performance and reliability you depend on. Please be advised you may notice both old and new packaging during the rollout as this change will happen gradually.

Discontinued Liners: L3B-10, L4B-10

Discontinued Liners: L3B-10, L4B-10

Effective February 19, 2025, Rear Load liners L3B-10 and L4B-10 are discontinued. Rear Load liners L3B-15 and L4B-15 directly replace L3B-10 and L4B-10, respectively. These replacements are 15ft (4.57 m) in length.

For questions, please contact Customer Service by phone at 1.855.MIGWELD (644.9353) or email at cs@itwmig.com.

NEW PRODUCT — Expanded AccuLock™ S and Tregaskiss® Nozzle Offering

NEW PRODUCT — Expanded AccuLock™ S and Tregaskiss® Nozzle Offering

We have expanded the nozzle options available in our AccuLock™ S and Tregaskiss® product families.

For AccuLock™ S, we have added the following nozzle options:

Part NumberBore SizeTip PositionMaterialQuantity Compatibility
N-A1218C1/2″1/8’’ recessCopper10AccuLock™ S – Large
N-A1214C1/2″1/4’’ recessCopper10AccuLock™ S – Large
N-A3412C*3/4″1/2’’ Copper10AccuLock™ S – Large

* For use with Miller Electric HD (High-Deposition) MIG CV GMAW process.

For Tregaskiss®, we have added the following nozzle option:

Part NumberBore SizeTip PositionMaterialQuantity Compatibility
401-9-75*3/4″1/2″Copper10TOUGH LOCK® Diffuser
404-32 (Robotic)
404-26 (Semi-Automatic)
 
AccuLock™ R Diffuser
D-ATSH (Slip-On)

* For use with Miller Electric HD (High-Deposition) MIG CV GMAW process.

If you have any questions, please call or email our Customer Service team at 855.MIGWELD (644.9353) or cs@itwmig.com.

Update to Liner Descriptions

Update to Liner Descriptions

As part of our on-going simplification efforts, we are renaming our current selection of MIG gun liners. This change is effective now, as you will see our literature and website content being updated to reflect the simplified naming structure.

We offer four different liner types between our semi-automatic and automation MIG guns. The chart below will show the previous liner name/reference as well as the updated liner name/reference.

It’s important to note that the liners themselves are not changing. We will continue to deliver the same premium quality liners, using the same part numbers as we currently do.

Previous Liner Name/ReferenceUpdated Liner Name/Reference
AccuLock S (Dual Lock) LinerFront Load Liner
Conventional LinerRear Load Liner
QUICK LOAD® Pro Liner (Automation Only)E-Z Feed™ Liner
QUICK LOAD®(There is no name change for this product)

If you have any questions, please call or email our Customer Service team at 855.644.9353 (MIGWELD) or cs@itwmig.com.

Discontinued: TOUCH LOCK® standard duty gas diffuser, Part Number 404-25

Discontinued: TOUCH LOCK® standard duty gas diffuser, Part Number 404-25

Due to low demand, effective February 7, 2025, Tregaskiss will discontinue TOUGH LOCK standard duty gas diffuser 404-25.

TOUGH LOCK standard duty gas diffuser 404-10-25 directly replaces 404-25.This replacement is compatible with tapered, standard duty contact tips (403-2-XX, where XX represents wire size).

Diffuser 404-10-25 includes a set screw, as shown in the image below. No adjustments will need to be made to the set screw before or after installation. Previously, 404-25 did not have a set screw.

For questions, please contact Customer Service by phone at 1.855.MIGWELD (644.9353) or email at cs@itwmig.com.

Discontinued Parts: Jacketed Liners, LJ-XXXX-XX

Discontinued Parts: Jacketed Liners, LJ-XXXX-XX 

Due to low demand, effective January 17, 2025, the following jacketed liners will be discontinued:  

Part Number Description
LJ-3545-15 Jacketed liner, 0.035″ – 0.045″, 15′ 
LJ-3545-25 Jacketed liner, 0.035″ – 0.045″, 25′ 
LJ-5262-12 Jacketed liner, 0.052″ – 1/16″, 12′ 
LJ-5262-15 Jacketed liner, 0.052″ – 1/16″, 15′ 
LJ-5262-25 Jacketed liner, 0.052″ – 1/16″, 25′ 

There is no suggested replacement for these items. These jacketed liners were previously used in semi-automatic applications but are no longer compatible with our current MIG gun offerings.  

For questions, please contact Customer Service by phone at 1.855.MIGWELD (644.9353) or email at cs@itwmig.com

Discontinued Products – AutoLength™ Power Pins

Discontinued Products – AutoLength™ Power Pins

To continue to provide the best products and solutions to our customers, we routinely review, assess and evaluate our product line-up to ensure their features and benefits still hold their value. Accordingly, we have decided to discontinue our AutoLength™ power pins, effective January 10, 2025.

These AutoLength pins are currently used across both semi-automatic and robotic/fixed automatic product lines. Until the effective date, you can still purchase existing configurations as well as replacement AutoLength pins (or until inventory is depleted, whichever occurs first).

The charts below show the standard power pin that replaces each AutoLength option for both welding applications. You may also find instructions here for replacing an AutoLength power pin with a standard power pin.

To configure a new MIG gun part number using a standard power pin, please utilize our online configurators. Your new configuration will also include a full parts list. 

If you have any questions or need assistance configuring a new gun or finding a replacement part number, please contact our Customer Service Team by phone at 1.855.MIGWELD (1.855.644.9353) or via email at CS@itwmig.com.

PACKAGING CHANGE — Diffusers 404-XX, D-ATSH-100, D-ATTH-100

PACKAGING CHANGE — Diffusers 404-XX,
D-ATSH-100, D-ATTH-100

Effective October 11, 2024, the following 100-pack diffusers will be packaged in boxes instead of bags.

100-pack DiffusersDescription
404-18TOUGH LOCK®, Standard Duty
404-20TOUGH LOCK, HD
404-26TOUGH LOCK, HD
404-30TOUGH LOCK, HD
404-31TOUGH LOCK, HD
404-32TOUGH LOCK, HD for Robotic
D-ATSH-100AccuLock™ R Diffuser, Slip-On
D-ATTH-100AccuLock R Diffuser, Thread-On

The box dimensions are 6” x 6” x 4” (15.24cm x 15.24cm x 10.16cm).

Discontinued Parts: QUICK LOAD® Liners, 415-30-XXQ, 415-564-XXQ, 415-332-XXQ

Discontinued Parts: QUICK LOAD® Liners, 415-30-XXQ, 415-564-XXQ, 415-332-XXQ

Due to low demand, effective December 13, 2024, the following QUICK LOAD liners will be discontinued:

  • 415-30-6Q: QUICK LOAD liner, 0.30”, 6’
  • 415-30-15Q: QUICK LOAD liner, 0.30”, 15’
  • 415-564-6Q: QUICK LOAD liner, 1/16”-5/64”, 6’
  • 415-564-15Q: QUICK LOAD liner, 1/16”-5/64”, 15’
  • 415-564-25Q: QUICK LOAD liner, 1/16”-5/64”, 25’
  • 415-332-15Q: QUICK LOAD liner, 3/32”, 15’
  • 415-332-25Q: QUICK LOAD liner, 3/32”, 25’

As a suggested replacement, we offer conventional liners (rear loading).

QUICK LOAD® LinerTregaskiss® Conventional Liner
(Robotic/Automation)
Bernard® Conventional Liner
(Semi-Auto)
415-30-6Q415-30-25L2A-15
415-30-15Q415-30-25L2A-15
415-564-6Q415-564-6L6A-15
415-564-15Q415-564-15L6A-15
415-564-25Q415-564-25L6A-25
415-332-15Q415-332-15L7A-15
415-332-25Q415-332-25L7A-25

These liners are currently used across both semi-automatic and robotic/fixed automatic product lines. On the effective date, these seven QUICK LOAD liners will no longer be available, removed from our product configurators, and guns previously configured with these liners will no longer be available for purchase.

Please use our online configurators and/or consult Customer Service to find a suitable replacement by phone at 1.855.MIGWELD (644.9353) or email at cs@itwmig.com.

DISCONTINUED PRODUCT — BA1 COBOT MIG GUN

DISCONTINUED PRODUCT — BA1 COBOT MIG GUN

Effective January 1, 2025, all Tregaskiss® BA1 cobot air-cooled MIG guns will be discontinued and replaced with TOUGH GUN® CA3 robotic air-cooled MIG guns.

Affected Part NumbersDirect Replacements
All MIG gun part numbers beginning with BA12Replace digits “BA12” with “RA12” (the rest of the part number remains the same)
All replaceable unicable part numbers beginning with BA1UReplace digits “BA1U” with “CA3U” (the rest of the part number remains the same)
All replaceable unicable part numbers beginning with EBA1UReplace digits “EBA1U” with “ECA3U” (the rest of the part number remains the same)

The change supports our commitment to maximize efficiencies and focus on delivering our best quality solutions to our customers.

Please contact your ITW sales representative with questions. 

PRODUCT UPDATE — CHANGE TO THE CABLE USED ON TOUGH GUN® CA3 MIG GUNS

PRODUCT UPDATE — CHANGE TO THE CABLE USED ON TOUGH GUN® CA3 MIG GUNS

Effective January 1, 2025, as part of our ongoing commitment to focus on opportunities to innovate our product portfolio and continue delivering sustainable value to our customers, we will be making a change to the unicable used on our TOUGH GUN® CA3 robotic air-cooled MIG guns.

The new unicable provides better flexibility in cobot and conventional over-the-arm robotic welding applications.

It is important to note the amperage rating of the TOUGH GUN® CA3 MIG gun will change from 385-amp to 350-amp with mixed gases at 100% duty cycle (ratings are based on tests that comply with IEC 60974-7 standards).

There will be no change to configured TOUGH GUN® CA3 MIG gun part numbers or its replacement or service parts.

If you have any questions about this initiative, please contact your ITW sales representative.

NEW PRODUCT: SHROUDS FOR THE TOUGH GUN® TT4 REAMER AND WIRE CUTTER

NEW PRODUCT: SHROUDS FOR THE TOUGH GUN® TT4 REAMER AND WIRE CUTTER

We are pleased to announce the launch of our new reamer shroud and wire cutter shroud. These new shrouds are intended to encourage safe practices when the TOUGH GUN® TT4 reamers are used in cobot welding applications where the operator could be near the reamer during operation.

Moving forward, all TOUGH GUN® TT4A and TT4E reamers configured specifically for use in cobot welding applications will come factory-equipped with a reamer shroud, and if the reamer is configured with the wire cutter option, the wire cutter shroud will also be factory installed.

The wire cutter can be purchased with or without the wire cutter shroud, and the reamer and the wire cutter shrouds are both available for purchase separately for customers who would like to retrofit their existing equipment, but it is important to note that if retrofitting a reamer and/or a wire cutter manufactured before March 2024, additional components will be required.

Please contact our technical support team or your local ITW representative for additional assistance if trying to retrofit older models.

TT4-SHR
Reamer shroud only, for
TOUGH GUN® TT4 reamer

WC-400C
Wire cutter equipped
with wire cutter shroud

WC-400-SHR
Wire cutter shroud only,
for wire cutter

If you have further questions or would like more information, please contact your local ITW representative.

Key MIG Gun Components for Job Performance

Key MIG Gun Components for Job Performance

MIG welding is a common welding process especially useful for beginner and DIY welders due to its easy-to-learn nature, shorter lead times and lower production costs. The versatility of MIG welding allows users to work on a wide range of materials with less stopping and restarting. The process features a continuous consumable wire electrode being fed through a welding gun and into a weld pool. The gun also feeds a shielding gas alongside the wire to protect the weld pool from contaminants.

While there are different types of MIG guns that have unique parts (e.g., water-cooled, air-cooled, fume extraction), all MIG guns have some parts in common. Understanding the components of a MIG gun and the process by which it works will help you make decisions on the consumables and gun type you select for your job. Here’s what you need to know.

CONSUMABLES

1. Nozzle

  • The nozzle directs the shielding gas to cover the weld puddle.
  • By shielding the weld puddle, the nozzle helps to prevent spatter on the weld surface while simultaneously protecting internal components of the gun from heat and spatter.

2. Contact Tip

  • The contact tip guides the wire and transfers the current from the neck through the filler metal and to the work surface. Consistent wire feeding ensures a stable arc and high weld quality.

3. Diffuser

  • The diffuser conducts electricity to the contact tip while dispersing gas evenly across the weld pool.
  • Ensuring even distribution of shielding gas ensures consistent coverage of the weld pool, preventing contamination and defects like porosity and oxidation.

4. Liner

  • The liner is crucial to MIG welding because it guides the wire electrode from the wire feeder through the cable to the contact tip.
  • A worn or low-quality liner can cause friction, leading to inconsistent feeding and arc instability and, ultimately, poor weld quality.
  • There are several materials of liners for consideration, each with advantages in different applications.

ESSENTIAL GUN COMPONENTS

5. Neck

  • The neck is the front-end extension of a MIG welding torch and houses vital components like the contact tip, gas nozzle and wire feeder inlet.
  • It directs the welding arc and shielding gas precisely onto the weld joint, improving weld quality and consistency.
  • Selecting the right neck (i.e., long versus short) is important because it impacts a welder’s posture, visibility and heat control.

6. Handle and Trigger

  • The handle and trigger impacts how long an operator can weld without experiencing fatigue.
  • Handles with an ergonomic design and a natural feeling grip will improve operator comfort and welding duration.
  • When selecting a trigger, it needs to be responsive to the touch and best suited for the job (e.g., multi-schedule, locking).

7. Cable Assembly

  • In MIG welding, the cable assembly delivers power, gas, filler metal and control signals to the welding gun.
  • Without the successful transmission of each of these elements, the weld will not function as intended.
  • Compression fittings are an integral aspect of the assembly because they provide a reliable connection, better energy transfer and less resistance.

OTHER COMPONENTS

8. Insulator

  • Plays a critical role in electrical isolation and heat management.
    • Made of a non-conductive material to help electrically isolate the metal components of the welding gun (e.g., the trigger mechanism) from the electrical circuit carrying the welding current.
    • Acts as a thermal barrier between nozzle and trigger mechanism, preventing overheating and malfunctions.

9. Power Pin

  • Power pins provide a direct connection for wire, weld power and gas flow between the welding machine and/or wire feeder and the MIG gun. An accurate gun-to-machine connection is critical to ensure that the filler wire, gas and weld power are passed efficiently to the gun.  

New Product: Chrome Zirconium AccuLock™ Contact Tips 0.052” and 1/16” – Now Available

New Product: Chrome Zirconium AccuLock™ Contact Tips 0.052” and 1/16” – Now Available

T-A052ZH  0.052″ (1.3 mm); qty. 10
T-A052ZH-1000.052″ (1.3 mm); qty. 100
T-A062ZH      1/16″ (1.6 mm); qty. 10
T-A062ZH-100      1/16″ (1.6 mm); qty. 100

Please contact the Bernard and Tregaskiss Customer Service team by phone at 1.866.MIGWELD (644.9353) or email at cs@itwmig.com with any questions.

A Fresh Look for Bernard® and Tregaskiss®

A Fresh Look for Bernard® and Tregaskiss®

We’re thrilled to announce that Bernard® and Tregaskiss® have undergone an exciting brand refresh. As of today, you will notice our updated logos and visual branding on our website, social media channels, and promotional items. This change marks a significant step forward in our journey to enhance our brands’ presence and commitment to excellence in the welding industry.

What’s New?

  • Updated Logos and Brand Colors: Our new logos reflect a modern and dynamic identity for both
    Bernard and Tregaskiss, while maintaining the core values and heritage of our brands.
  • Website Change: Our website has transitioned to www.bernardtregaskiss.com. For your
    convenience, tregaskiss.com will continue to redirect to the new site.
  • Marketing Collateral and Promotional Items: New promo items are now available on
    millerweldsstore.com and we’ve begun to provide new marketing collateral to our sales team.
  • Enhanced Product Packaging: Updated product packaging featuring our new branding will be
    rolled out gradually as existing stock is replenished.

What’s Staying the Same?

  • Unchanged Product Designs and Features: Our commitment to delivering high-quality, reliable
    MIG welding solutions remains steadfast.
  • Product Quality and Performance: You can continue to rely on the superior performance and
    durability of Bernard and Tregaskiss products.
  • Heritage and Expertise: Bernard’s leadership in semi-automatic MIG guns and Tregaskiss’
    excellence in robotic MIG guns continue to be the foundation of our brands.

Why the Change?

In a competitive market, it’s essential to evolve and stay ahead. Our refreshed visual identity reflects our
dedication to innovation and leadership in the welding industry. By creating a more cohesive and modern brand image, we are reinforcing Bernard’s reputation as a leader in semi-automatic MIG gun solutions and Tregaskiss’ prominence in robotic MIG guns.

Impact on Products and Marketing Materials:

  • Gradual Transition: Print marketing materials and product logos will be updated gradually as
    existing stock is replenished.
  • Continued ‘Tough Gun’ Messaging: We will maintain our strong brand messaging, emphasizing the
    durability and toughness of our products.
  • Updated Promotional Items: New promotional are now available on millerweldsstore.com.

We’re confident that these updates will strengthen our brands and provide you with an even better
experience. If you have any questions or need further information, please do not hesitate to contact us.

PRODUCT IMPROVEMENT – Change to Profile of TOUGH GUN® TA3 MIG Gun Connector Housings

PRODUCT IMPROVEMENT – Change to Profile of TOUGH GUN® TA3 MIG Gun Connector Housings

As part of our ongoing commitment to continuous improvement, we are making a change to the
TOUGH GUN® TA3 gun connector housing to accommodate an additional setscrew (see ‘Setscrew 2’
in Figure 2) which is designed to improve TCP repeatability when using long/extended length necks by providing additional support to help secure the neck firmly in place.

In order to make this change, extra thread engagement was required for the front setscrew which increased the profile of the front housing by 0.157” at the largest section (see Figure 3). And rather than the M6 x 1.0 setscrew currently used in our existing design, the new design uses two (2) M10 x 1.25 setscrews which have been tested and consistently achieved 340 in.-lbs. without causing any thread failures.

It is important to note that, like in our existing design, ‘Setscrew 1’ (see Figure 2) is responsible for the electrical (and mechanical) connection and must be installed and tightened properly, whereas ‘Setscrew 2’ is intended solely to achieve additional mechanical support. The sticker on the new gun connector housings has been revised to indicate a Step 1 / Step 2 approach (see Figure 4) to reflect this order of importance.

This incremental improvement will be rolled out as a running change as we work through current inventory, with full implementation targeted to be complete by the end of 2024.

If you have further questions or would like more information, please contact your local ITW representative.

PRODUCT UPDATE — Configurator Simplification: S-GUN™ Semi-Automatic MIG Gun Changes

PRODUCT UPDATE — Configurator Simplification: S-GUN™
Semi-Automatic MIG Gun Changes

Effective August 2024, we will simplify the configurable options of our S-Gun™ Semi-Automatic Air-Cooled MIG guns. The simplification plan includes the following:

  • Cable options: Only available for 300 and 400 amps in lengths of 15 ft., 20 ft. and 25 ft.
  • Handle options: Configurable with either T-Series handle (standard, locking triggers) or O-Series (standard trigger).
  • Consumables: Configurable exclusively with AccuLock™ S; however, will remain compatible with entire consumable line-up to accommodate user preference.
  • Power Pins: Offered with Miller®, Tweco® 4 (with Miller® lead), Euro or Lincoln® power pins.

The S-Gun™ options will be removed from the BTB Semi-Automatic Air-Cooled MIG guns online configurator. We will create a dedicated product page for S-Guns™ on our website, which will also include a separate spec sheet.

In November, we will introduce an online configurator for S-Guns™.

The options removed from the configurator will remain available for purchase until the end of 2024. After this period, these options will be re-evaluated for potential discontinuation.

These changes aim to provide a more efficient and user-friendly experience for customers.

If you have any questions or would like more information, please contact your local ITW representative.


S-Gun™ Semi-Automatic MIG Gun Timeline of Changes


Discontinued Part: Liner for 3/64”-1/16” Aluminum wire, 1910038

Discontinued Part: Liner for 3/64”-1/16” Aluminum wire, 1910038

Due to low demand, as of June 12th, 2024, part number 1910038 has been discontinued. This item can be directly replaced with part number 415-116-23.

Please contact the Bernard and Tregaskiss Customer Service team by phone at 1.866.MIGWELD (644.9353) or email at cs@itwmig.com with any questions.

Discontinued Part: Spool & Push-Pull Gun Conversion Kit SGA-4 (Fronius®)

Discontinued Part: Spool & Push-Pull Gun Conversion Kit SGA-4 (Fronius®)

Due to low demand, as of June 3rd, 2024, part number SGA-4 has been discontinued. There is no direct replacement for this part.

Please contact the Bernard and Tregaskiss Customer Service team by phone at 1.866.MIGWELD (644.9353) or email at cs@itwmig.com for any questions.

Extending the Life of Welding Guns and Consumables

Extending the Life of Welding Guns and Consumables

Mastering preventive maintenance, timely consumable replacements, and proper liner trimming are key to prolonging the lifetime of MIG welding equipment. Discover proactive measures to follow for enhancing durability and performance while decreasing downtime, boosting productivity, and cutting operating costs by reading our full article in the March 2024 issue of MetalForming Magazine.