WSI HD Press-Type Welders FOR SALE

Heavy-Duty Resistance Spot and Projection Welders

Weld Systems Integrators (WSI) HD press-type welders are heavy-duty resistance welding machines designed for spot welding, projection welding, and combined spot/projection welding applications. Available in AC, MFDC, and capacitor discharge configurations, WSI HD press welders deliver up to 500 kVA, 100,000 amps of weld current, 48-inch throat depth, and 5,500 lbs. of weld force. Each air-operated, water-cooled welder is manufactured in the USA by Weld Systems Integrators for demanding industrial production applications.

WSI Press Welders – Versatile machines for a wide range of resistance welding applications.

In the engineering stages, WSI utilizes the latest in computer-aided design software. The manufacturing process delivers precision machining for all frame requirements. In addition, our assembly utilizes state of the art components with time tested manufacturing techniques for a high performance, value-driven welder. The welders are tested under full power, certifying compliance to rigid specifications.

WSI resistance welders are MADE IN THE USA at our Warrensville Heights, OHIO location. Give us a call for IN-STOCK inventory.

WSI HD Press-Type Resistance Spot and Projection Welder | Weld Systems IntegratorsMade in USA | Weld Systems Integrators

Each press type welder is manufactured for a lifetime of performance.

WSI welders are an excellent choice for stand-alone tasks. Therefore, they can be coupled with value-added feeding equipment or tooling with parts eject system for ease and speed of operator use. Projection and spot welding machines can also be integrated into a manufacturing system, part of a work task cell, integrated into a robot cell, or designed into multi-spot requirement applications. Please feel free to contact our application engineers for your specific needs.

WSI HD Press-Type Welder Specifications
WSI Frame Size Transformer (kVA) Throat Depth (in.) Air Cylinder Diameter 2.3 (in.) Maximum / Retractable Stroke (in.) Platen Size (in.)
W1 30, 40, 50, 75, 100, 125 12, 18, 24, 30, 36, 42, 48 4, 5, 6 4 / 1 6 x 6
(RMWA #1)
W2 75, 100, 125, 150, 200 12, 18, 24, 30, 36, 42, 48 6, 8, 10 4 / 2 6 x 6
(RMWA #2)
W3 150, 200, 250, 300, 400, 500 12, 18, 24, 30, 36 8, 10, 12 4 / 2 6 x 6
(RMWA #3)
Standard FeaturesAdditional OptionsAll WSI Press WeldersCommon Applications
  • Available from 30 to 500 KVA @ 50% duty cycle
  • Throat depths from 12” to 48”
  • Aluminum ram for fast follow-up
  • Heavy-duty frame
  • Thomson Slide featured as ram guide
  • Dual water manifolds with ball valve shut-offs
  • Adjustable knee brace
  • Hydraulic jack for ease of operator adjustment of lower knee
  • Stacked core Roman transformer with multi-position tap switch
  • Ejector-type holders used on spot welders
  • Emergency stop
  • Single, three-phase, or mid-frequency transformers
  • Dual-acting air cylinder, 4” standard stroke
  • Rigid secondary with heavy-duty laminated shunt
  • Adjustable lower knee for various applications
  • Two-stage foot switch
  • Color coded hosing for both air and water
  • Emergency stop
  • Air filter, regulator with gauge, lubricator, approved air shut-off / lock-out
  • Adjustable air pressure switch
  • Water flow switch, visual and / or electrically interfaced
  • Palm buttons / foot switch
  • Set of 4 quick disconnects on water hosing to tooling
  • Water chiller
  • Light curtains
  • Water filter package with replaceable cartridge
  • Water recirculator
  • Adjustable stroke air cylinder
  • Retractable stroke air cylinder
  • Additional regulator with gauge for nut welding
  • Air surge tank
  • Nut / stud feeding / sensing equipment
  • Adjustable pressure tip dress
  • Weld control choice with or without disconnect
  • Position feedback devices

WSI offers three press-type resistance welder platforms: HD, ECONOPRESS, and ValuePress. The WSI HD is designed for the highest-capacity applications, with configurations up to 500 kVA, 100,000 amps of weld current, 48-inch throat depth, and 5,500 lbs. of weld force. ECONOPRESS and ValuePress models provide economical alternatives for applications requiring lower power, force, or throat depth.

WSI HD vs. WSI ECONOPRESS vs. WSI ValuePress
MODELS WSI HD Press-Type Spot and Projection Welders WSI ECONOPRESS Spot and Projection Welders WSI ValuePress Spot and Projection Welders
WSI Series Press-Type Spot Welder | Weld Systems Integrators EconoPress Press-Type Welder | Weld Systems Integrators WSI ValuePress | Weld Systems Integrators
KVA 30 – 500 kVA 25 – 200 kVA 35-100 kVA
Power AC, MFDC and CD AC, MFDC and CD AC and MFDC
Max. weld current 100,000 amps 75,000 amps 25,000 amps
Max. throat depth 48″ 36″ 8″
Max. platen size 6″ x 6″ 6″ x 6″
Max. weld force 5,500 lbs. 4,000 lbs. 1,570 lbs.

WSI HD press-type resistance welders can be configured for demanding industrial applications including:

  • Projection welding
  • Resistance spot welding
  • Nut welding
  • Stud welding
  • Fastener welding
  • Multi-spot welding
  • Automated welding cells
  • Robotic resistance welding
  • Specialized tooling applications
  • High-force resistance welding

Why Choose a WSI HD Press-Type Welder?

Choosing the correct WSI press-type welder depends on the material, part thickness, weld type, required weld current and force, throat depth, tooling requirements, and production rate. WSI application engineers can configure HD press welders for spot welding, projection welding, nut and stud welding, automated feeding, and custom resistance welding applications.

Heavy-duty construction — Built for demanding industrial production environments.

High welding capacity — Configurations up to 500 kVA, 100,000 amps, and 5,500 lbs. of weld force.

Flexible power options — Available with AC, MFDC and capacitor discharge power supplies.

Custom configurations — Configure throat depth, tooling, cylinders, controls, feeding equipment, and automation around the application.

Made in the USA — Manufactured by WSI in Warrensville Heights, Ohio.

Automation-ready — Integrate into standalone work cells, robotic systems, or multi-spot welding systems.

Contact Weld Systems Integrators

Weld Systems Integrators (WSI) is your complete source for standard and custom resistance welders, consumables, spare and replacement parts, and value-added services. We offer WORLDWIDE shipping from our Warrensville Heights, Ohio, location.

CONTACT Weld Systems Integrators, or REQUEST A QUOTE on standard IN-STOCK inventory or fully custom welding equipment. To speak with a WSI team member, please give us a call at 844-WSI-WELD or 216-475-5629.

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