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Miller M-25 and M-100 MIG Guns Conversion Chart

How to Install AccuLock Consumables on M-Series MIG Guns

  1. Remove the contact tip, diffuser, and nozzle
  2. Leave the liner in place. There should also be no need to trim the liner as long as it was trimmed correctly during initial installation
  3. If damaged, the M-25 shock washer (169730) should be replaced with a 4623RM Neck Insulator
  4. Install the new AccuLock diffuser, contact tip and nozzle.

IMPORTANT: Do not use AccuLock Liners. M-Series Guns with AccuLock Consumables must continue to use their existing liner and power pin.

Compatibility chart

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Miller M-100 MIG Guns to AccuLock MDX

Miller M-100 MIG Guns

M-100 to AccuLock MDX Conversion Diffuser

  • 1070115

AccuLock MDX-100 Nozzles

  • NS-M1200C Copper, 1/2” ID, Flush
  • NS-M1200B Brass, 1/2” ID, Flush
  • NS-MFLX Gasless

AccuLock MDX-100 Contact Tips

  • T-M023 .023” (0.6mm)
  • T-M030 .030” (0.8mm)
  • T-M035 .035” (0.9mm)
  • T-M045 .045” (1.2mm)
  • T-M047 3/64” (1.2 mm)

Miller M-25 MIG Guns to AccuLock MDX

Miller M-25 MIG Guns

M-25 to AccuLock MDX Conversion Diffuser

  • 1070116

AccuLock MDX-250 Nozzles

  • N-M1200C Copper, 1/2” ID, Flush
  • N-M1218C Copper, 1/2” ID, 1/8” Recess
  • N-M5800C Copper, 5/8” ID, Flush
  • N-M5818C Copper, 5/8” ID, 1/8” Recess
  • N-M58XTC Copper, 5/8” ID, 1/8” Stickout

AccuLock MDX-100 Contact Tips

  • T-M023 .023” (0.6mm)
  • T-M030 .030” (0.8mm)
  • T-M035 .035” (0.9mm)
  • T-M045 .045” (1.2mm)
  • T-M047 3/64” (1.2 mm)

Miller M-25 MIG Guns to AccuLock S

Miller M-25 MIG Guns

M-25 to AccuLock S Conversion Diffuser

  • 1070117

AccuLock S Nozzles

  • N-A5800CM Copper, 5/8” ID, Flush
  • N-A5818CM Copper, 5/8” ID, 1/8” Recess
  • N-A5814CM Copper, 5/8” ID, 1/4” Recess

AccuLock Contact Tips

T-A023CHM .023” (0.6mm)
T-A030CHM .030” (0.8mm)
T-A035CHM .035” (0.9mm)
T-A039CHM .039” (1.0mm)
T-A045CHM .045” (1.2mm)

AccuLock Conversion Kits

M-100 to AccuLock MDX Conversion Kit

  • 1880269

M-25 to AccuLock MDX Conversion Kit

  • 1880270

M-25 to AccuLock S Conversion Kit

  • 1880271

M-25 to AccuLock Neck Insulator

  • 4623RM (for AccuLock MDX & AccuLock S)
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