ESAB ST-21M, Manual

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Table 2 - ST-21M Wire Feed Accessories
Contact Tip Torch
Wire Wire Contact (Threaded) Torch Inlet
Type Size Tube Long Short Liner Guide
HARD .030 — — 632791 690515 (.070) 690516
.035 996104 632794 632793 690515 (.070) 690516
.045 996105 632796 632795 690514 (.100) 690516
.052 996816 948335 948308 690514 (.100) 690516
1/16 996106 632798 632797 690514 (.100) 690516
3/32 996108 — 632800 993844 (.140) 690516
CORED (a) .045 996105 — 632795 690514 (.100) 690516
.052 996816 — 948308 690514 (.100) 690516
1/16 996106 — 632797 690514 (.100) 690516
3/32 996108 — 632800 993844 (.140) 690516
7/64 (c) — — 633611 — 11N73
SOFT .030 — — 632791 6271087 (.070) (b) 690516
.035 996104 632794 632793 6271087 (.070) (b) 690516
3/64 996105 632796 632795 993843 (.110) 690516
1/16 996106 632798 632797 993843 (.110) 690516
3/32 996108 — 633611 993901 (.138) 690516
(a) Use No. 12M nozzle (P/N 997310) for cored wire.
(b) Also requires a support tube liner, (P/N 993901).
(c) A drawback to using this size wire is that a torch liner cannot be used and wire guide wear can occur.
5. Power Cable. Customer supplied 4/0 power cable
with connector lug (P/N 81F60).
6. Coolant Circulator - A unit capable of circulating
coolant at the rate of 1 gpm at 50 psi is more than
adequate for protecting the torch. The Coolant circula-
tor should be capable of providing at least 6400 BTU/
hr cooling capacity at 40°C ambient temperature.
The use of p/n 0560950312 TORCH Coolant 50%
EG 1GAL is recommended in the coolant circulator.
NOTE: The circulator cannot be set up for solenoid
valve shutoff.
Table 1 - ST-21M Nozzles
No. 8 .......................................................................598739*
No. 10 .....................................................................598721*
No. 10L (Long Length) ...........................................598891*
No. 12 ...................................................................... 633985
No. 12L (Long Length) ............................................ 639756
No. 12M (Med. Length) ........................................... 997310
No. 12 Spot ............................................................. 993757
* Requires Spatter Liner 633603.
B. OPTIONAL ACCESSORIES
1. Remote Mounting Accessories.
If remote mount-
ing of torch is desired, conduit, conduit liner (if using
aluminum wire), torch-to-conduit adaptor (61N59 and
welding head wire outlet guide are required. Refer to
Fig. 2 and Tables 3 and 4 for the proper accessories.)
2. Cold Wire Accessories. After-market cold wire feed
systems and accessories can be used with the ST-
21M. The torch body is 1-3/8" dia., a typical size for
automatic torches, holders, and accessories.
3. Centering Bushing, Part No. 994330 (for use with 8
and 10 nozzles). Eliminates any possibility of spatter
bridging in the torch. This is accomplished by using
this one-piece centering bushing/spatter liner in place
of the two individual pieces normally used. Note that it
can only be used at maximum currents of 350 amps
with Argon or 550 amps with CO
2
.