Product Name
Products Description

AMI Model 21 weld heads bring a new level of quality and efficiency to your fusion welding process. Designed for fusion (TIG) welding of tubes through the range of 0.125” (3,175 mm) to 1” (25,4 mm) OD.

The compact, robust design of the heads makes them ideal for restricted clearance applications. Automated clamping combined with precise tube centering and alignment verification will dramatically lower the set-up time and increase productivity. The Model 21 weld heads will exceed the clamping and alignment performance of your current weld head. The optional foot pedal operation reduces your cycle times for bench top work, while the light weight and comfortable hand grip make it ideal for field work.

All Model 21 heads require Model 21 controller.


  • Automated clamping
  • Automatic tube-to-electrode alignment for tube centering mechanism
  • Alignment verification read-out
  • Automatic air-cooling
  • Snap-in collets
  • Quick disconnect cable
  • High duty cycle
  • Compact, robust design
Compatible Power Supplies:
Model 207 - direct connection of controller cable.
Model 205/Exel EPS-1500 - requires specific M205 or Exel EPS-1500 adapter cable to the controller cable. (A 24V DC power supply is included.)
Model 307 - requires specific M307 adapter cable to the controller cable. (A 24V DC power supply is included.)

Operators Manual  
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