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Straight answers on choosing, fitting and looking after a lightweight air-cooled MIG torch of this size class and its swan necks.
On many torches of this type the handle and cable are separate from the neck (the curved tube that carries the contact tip and nozzle), so you can choose the neck shape that suits your work. A neck must be matched to the torch size class and to the maker's neck style, because necks from different styles usually do not interchange.Check the data plate, the manual or the markings on your existing neck and match the size class and the fitting before ordering. If you are unsure, our team can help you choose.
The number in a torch name is a model or size class, not a guaranteed rating, so do not assume it equals the current you can weld at. The real rating depends on the shielding gas, because a torch is usually rated higher on carbon dioxide than on mixed gas, as argon mixes give a hotter arc. It also depends on duty cycle, which is how much of each ten-minute period you can weld without letting the torch cool.Always read the rating for your gas and duty cycle on the torch's data sheet or data plate, and do not simply weld up to the headline number.
Choose the shortest cable that lets you reach the work comfortably from the wire feeder. An overly long cable tends to tangle and puts more strain on the liner, while a cable that is too short pulls on the machine and strains the connections.Think about where the machine will stand and how far you need to move around the job. Keep the cable laid out as straight as practical in use, and keep it clear of vehicles, moving equipment and sharp edges.
The liner must match both the wire material and the wire diameter. Steel liners suit steel wire, while a plastic-type liner (such as PTFE or nylon) is generally used for softer aluminium wire because it creates less friction. Using a liner that is too tight causes jamming and shaving, and one that is too loose lets the wire buckle.A torch should never be run without a liner. Fit the right type and bore size whenever you change wire, and check the torch manual for the correct liner for your cable length.