Choosing the Right MIG Gun

Which is the Right MIG Gun? Tips for Making the Selection

When it comes to welding, no two applications are alike. Just as it’s important to select a power source that is right for the job, it is also essential to select a MIG gun that will deliver the appropriate amperage capabilities. Something to consider is whether to choose a light-duty or heavy-duty gun. Like any welding equipment, each has its advantages and disadvantages, as well as applications for which it is best suited.

Light Versus Heavy Duty MIG Guns

Depending on the amount of arc-on time required for an application and the amperage needed, a light or heavy duty MIG gun may be the best choice. The key is to make sure that the gun provides the necessary amperage to avoid overheating and premature failure. As a general rule, light duty MIG guns work well for welding on thin materials, like sheet metal, for tacking or for other applications that require short arc-on times. These guns tend to be smaller and lighter than heavy duty guns, making them more comfortable for the welding operator. Bernard offer them in models ranging from 140 & 240 amps.

Heavy duty MIG guns are typically the best option for applications requiring multiple passes on thick sections of material or for long durations of welding. Bernard offer them in models ranging from 390 – 440 Amps. The necks on these guns are often longer, which creates more distance between the welding operator and the high heat from the arc, and the handles on these guns are usually larger, too. While the handle size is vital to accommodate the larger cables necessary for higher amperage output, it can make the gun more cumbersome for the welding operator to maneuver. These guns frequently also use heavy duty front-end consumables that are capable of withstanding high amperages and longer arc-on times.

View our full range of MIG Guns here

For more information, contact our customer support team on 1300 300 884.