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ProStar™ MIG Welding Boom Mount - PRSWSM400

Rigid Construction and Unbending Reliability at Your Shop or on the Job Site

Praxair’s innovative ProStar™ PRSWSM400 MIG welding boom mount is ideal for busy shops where space is limited and maximum arc-on time is required. The PRSWSM400 mount helps make previously hard-to-reach weld processes, such as internal and external circumferential welds, more convenient.

Customizable boom end mounts, double articulation and smooth motion make the PRSWSM400 the ideal choice for heavy fabricators who require exceptional configurability to ensure a work area with no dead zones.


  • Tank and vessel construction
  • Trailer and rail car fabrication
  • Wind tower fabrication
  • Mining equipment
  • Pipeline fit-ups
  • Other MIG processes

Standard Features

  • Adjustable drag brake for boom and column resistance
  • Customizable boom end mounts using two rotating equipment platforms
  • Smooth motion from tapered roller bearings
  • Supports loads up to 250 lbs.
  • Adjustable lifting eye
  • Column knuckle lock (pull and twist for free rotation)
  • Total coverage – double articulated boom ensures no dead zones in your work area
  • Integrated cable management channels
  • Adjustable hitch-pin height adjustment
  • Two equipment mounting locations (platforms rotate with column)
  • 16 ft. or custom radius
  • Concrete-filled counterweight base with forklift pockets on all sides
Praxair MIG Welding Boom Mount

Load Capacity to 250 lbs. + 16-Foot Radius—Custom Configurations Available


Wall Mount Options:

  • Capacity: 250 lbs.
  • Working length: 195 in.

Standard Configuration

Part No.Area Coverage* Max Working Height

Vertical Adjustment 

Max Boom Reach 

Base Dimensions 

Shipping Weight 

PRSWSM40016 ft. or custom size 120 in. Up to 32 in. 195 in. (16.25 ft.)66 in. x 66 in. 

5,100 lbs. 

*Praxair can customized to your requirements. 

Download Brochure 

Access the PDF file by clicking the button below. 

MIG Welding Boom Mount Brochure

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