10
1 Short contact tips are generally recommended to give proper wire stick out for flux cored wire welding.
2 Medium contact tips are generally recommended to give proper wire stick out for spray transfer Mig welding.
3 Long contact tips are generally recommended to give good visibility and proper wire stick out for dip transferring welding.
* The use of Heavy Duty tips & tubes and Extra Heavy Duty threaded nozzles extends the rating of the MT-400 to 500 amps @ 60% duty cycle
in CO
2
.
+ Use with Nozzle Adaptor (999452)
² Use with Nozzle Adaptor (948793) and Extra Heavy Duty Adaptor (17318)
u New ID for improved arc performance on steel/flux cored wire.
Notched for improved arc starting and increased tip life.
Table 1.4.1 Recommended Contact Tips, Tubes and Adaptors
Standard Duty Heavy Duty* Heavy Duty*
Wire Contact Tips Contact Tips Contact Tubes
Sizes & Type Short
1
Medium
2
Long
3
Short
1
Medium
2
Short
1
Medium
2
For Hard and Cored Wires
.023 (.6mm) - 20543 999742 - - - -
.030 (.8mm) - 20544 996994 - - - -
.035 (.9mm) - 996995 996996 - - - 17163
.040 (1.0mm) - 37287 37288 - - - -
.045 (1.2mm) 999578u 37290u 996998u - 37286u - 37292u
.052 (1.4mm) 948340u 2075349u - - 17778u - 17155u
1/16 (1.6mm) 948341u 37289u - - 37291u - 17157u
5/64 (2.0mm) - 2075230u - 948832u - 17159u -
3/32 (2.4mm) - - - 948833u - 17161u -
For Soft (Aluminum) Wires
.023 (.6mm) - 20543 999742 - - - -
.030 (.8mm) - 20544 996994 - - - -
.030 (.8mm) - 36884 --- - -
.035 (.9mm) - 996995 996996 - - - -
.035 (.9mm) - 36885 --- - -
.040 (1.0mm) - 37287 37288 - - - -
3/64 (1.2mm) - 996999 - - 17765 17164
3/64 (1.2mm) - 36886 --- - -
1/16 (1.6mm) - 996997 - - 948835 - -
Tip Adaptor for 17983 (all diameters)+ 17984 (all diameters)+ Not Available
Slide-On Nozzles
Tip Adaptor for 948785 (all diameters)² 17766 (.045"-1/16")² Collet Body 17136
Threaded Nozzles 948786 (5/64"-3/32")² Collet 17135²
TABLE 1.4.2 Recommended Nozzles Accessories
Nozzle Slide-On, Self-Insulated* Threaded+
Standard Duty Heavy Duty Extra Heavy Extra Heavy
Description I.D. Standard Long-Lifeu Standard Long-Lifeu duty (Brass) Duty
#6 Tapered 3/8 998895 998895XL - - - -
#8 1/2 998893 998893XL 999471 999471XL - 948767
#10 5/8 998894 998894XL 999472 999472XL - 948768
#12 3/4 - - 999473 - 17350 948769
#12 Spot 3/4 17316§ - 999625 - - -
#16 Spot 1 - - - - - 999900
* Slide-on, Self-Insulated Nozzles require Adaptor 999452.
+ Threaded Nozzles require Extra Heavy Duty Adaptor 17318 and Nozzle Adaptor 948793.
§ Requires 17293 Tip Adaptor (replaces standard tip adaptor) and 17321 Nozzle Insulator.
u Long-life nozzles are coated to reduce weld spatter adherence and extend life on nozzle.