Automatic Longitudinal Seam Welders Proudly Made In USA

ERGO Automatic Longitudinal Seam Welders

TIG / MIG Linear Seam Welder Systems

The ERGO seam welders are designed to deliver high levels of accuracy using linear rail technology. Whereas traditional seam welders use less precise rack and pinion track setups that use cam followers. The ERGO automatic longitudinal seam welder design uses precision linear rails that are used to move the travel carriage smoothly over the clamped butt weld joint providing 100% penetration welds. Linear rail technology provides the highest quality durable linear precision longitudinal seam welders.

MITUSA engineers seamers for joint welding external, internal, combination external seam welder machines.  Seam welding for bellows, cones, cylinders, flat plate sheet metal. Seam welding metal carbon steel, stainless, copper, aluminum, Inco and most alloys can be seam welded on a MITUSA seam welding machine.

MITUSA engineering and manufacturing team is the definition of automatic seam welding system builders. Seam welders for metal butted joint weld seaming of cylindrical or tubular parts like cones, tanks, pipe and boxes, automatic seam welding applications for flat sheet metal butt joints welding together for a complete part assembly.

Linear track provides a much stronger hold for the track car and gives you smooth free travel with the Ergo TC-3 travel carriage. The side beam track is machined to a 0.005-inch straightness tolerance, so that the seam will be as close to straight as possible. Ensuring a quality longitudinal seam welding process.

  • Convenient, easy to read air module controls on front with operator buttons and lights.
  • Low voltage motors for safety.
  • One primary power connection.
  • Simple track alignment tooling.
  • Water cooled mandrel back up bar.
  • Copper clamping fingers and back up bar.
  • MAGA-1 Single box electric control of process operator does not need to search which box and button to push or turn.
  • Foot switch activation of clamping fingers.
  • Programmable home position, travel, and weld length.
  • Low profile, easy to move unit as weld cell changes.
  • Easy move tow motor portable design seam welding system.

Our ergonomic design principles make the operator's job easier with this compact longitudinal seam welder. The ERGO linear seam welding machines have a unique design containing a clamping finger mechanism. This provides uniform and consistent clamping hold down alignment. All of our seam welder tooling is machined and manufactured in our facility for faster delivery.

The water cooled mandrel insert with aluminum, stainless gripping or copper clamping finger feature. This keeps the seamer bed back up bar tooling and fingertips at the optimal temperature of cooling during seam welding process. The seam welded joint tool clamping eliminates weldment heat deformation.

The longitudinal seam welder bed retractable edge alignment devices assist the operator in aligning the part over the centerline of the backup bar groove. Linear rails are mounted to the top and bottom of the fabricated track, allowing the side beam carriage to travel smoothly via four bearing blocks. The carriage travel car has a series of 3/8 inch - 6 x 2 1/2 predrilled holes, tapped to make mounting alignment tool easy.

ERGO simple air bag replacement design takes minutes. During MIG (GMAW) welding process some weld splatter in the seamer bed area will find openings over time. UV light and weld spatter from the arc welding process eventually requires the air bags replacement. The airbags can take hours to replace on other brands. The ERGO seamer's bladder takes minutes to replace damaged air bags and start seam welding production again.

The standard ERGO LSW Model seam welder design comes in sizes from 1 foot to 4 feet in welding length. Other longer length weld bed model of seam welder are available.

  • LSW-12 1 Foot ERGO Model Seam Welder System 12"
  • LSW-18 18 Inch ERGO Model Seam Welder System 1.5"
  • LSW-24 2 Foot ERGO Model Seam Welder System 24"
  • LSW-36 3 Foot ERGO Model Seam Welder System 36"
  • LSW-48 4 Foot ERGO Model Seam Welder System 48"
  • Custom ERGO Seam Welder Systems Available

ERGO complete seam welding machine design with all required automated weld processes MIG (GMAW), TIG (GTAW), Plasma (PAW), (SAW) Submerged arc (Sub Arc) equipment intergraded for easy seam weld fabrication production. Our seam welders come ready with integrated welding systems pre-installed after in house run off. We now provide customers complete Facetime video run offs for safe practicees during the pandemic.

All MITUSA seamer welding machine styles are delivered with industry leading service and support. We strive to provide our customers the personal service levels others no longer offer. MITUSA's company's core values are to ensure our valved customer friends get more than they expected. MITUSA is known for the highest level of customer service before and after the automatic seamer sale.

ERGO seam welders are designed for easy installation via fork lift base. From delivery truck to a working welding station system in just hours, not days.


ERGO seam welder ergonomic design includes quick safety button access to ensure operator protection. MITUSA is all about easy and safety when it comes to the automated welding system operator's needs for a proper easy welding system operation. MITUSA values the operator's input when it comes to designing and installing needed options on all of our seam welding machines.

ERGO Safety First Panel Seam Welder Safety Console

ERGO seam welding systems are built in our Huntington Park California manufacturing facility. We engineer and build Ergo seam welders complete with integrated automatic weld sequence controller, Xiris weld cameras, AVC or ALC arc length controls, cold wire feeders, complete with seam welding automation equipment needed for the customer requirement. Special riser heights is an option. Typical lead time of 2-8 weeks delivery based on model.

Call 323.312.2002 or email us for pricing, delivery details and any technical information you may need.

ERGO Longitudinal Seam Welder

Longitudinal Seam Welding Machine Bed

ERGO Automatic longitudinal seam welder machines are affordable welding shop fabrication equipment for seam welding process part production in house. MITUSA Ergo seam welding machines come in standard models with custom seam welder types available. MITUSA has ERGO Seam Welders for sale and in stock.

ERGO Bench Seam Welder System

MITUSA Seam Welder Seam Welding System

Ergonomic Weld Control Access

Easy Access Seamer Weld Controls

Ergonomic Seamer Handling Fork Lift Loader

Seam Welder Machine System Easy Loading

Custom Seam Welder Tooling

Seam Welder Copper Clamping Tooling