For the proper election of our new MIG/MAG welding torch we need to take into account some important factors. A wrong choice can become into bigger issues during the key moments or instead some overrun in the equipment of your workshop.
The standard MIG/MAG welding torches are the most affordable ones because of their great economy of scale in the gas-cooled torches no. 15, 25, 36 and liquid-cooled torches no. 240w and 501w. These models of torches are multi-purpose oriented: starting from a lightweight TS-15 torch for metal sheet welding or general reparations and ending with a powerful TS-501w torch used for long welding joints in heavy-duty plants. We can usually find these standard torches in furniture factories, general repairment workshops or in a truck body building workshop.
In the following image the proper model of standard torch is represented depending on the two main parameters indicating the power needed: wire size and welding current:
In any case, the welding torch rating must be equal or higher than your welding power source rating, taking into account both numbers of work cycles, usually indicated by manufacturers. The standard TS-240w torch, not shown in the previous chart because of its smaller popularity in front of gas torches, is still interesting for welders who need a lightweight and handy but also powerful torch due to its water cooling.
Example: I need to weld 1.2 mm wire at 200-250 A and preferably gas-cooled.
Answer: TS-36 torch
Example: I need a new torch for 1.0 mm wire and lightweight for spot welding. My welder has a maximum power of 200 A 60 %, 150 A 30 %.
Answer: TS-15 torch
However, these so much versatile torches with their affordable spare parts have some performance limitations because of design reasons. There are many other wire torch models in the market with higher performance, but less spread. In following posts we will explain the advantages of professional MIG/MAG welding torches.