Impact wrenches are plug-in power tools, powered by compressed air or electricity, they are one of the most common and useful tools in both the professional workshop and the serious hobbyist. Impact wrenches work by turning a “hammer” at high speed and then suddenly engaging the socket, to generate a sudden burst of torque. While electric (both network and cordless) and hydraulic models are available, the pneumatic impact wrench is by far the most popular.
Air impact wrenches are by far the most popular of all air tools, and if you are doing a great deal of automotive work, you will definitely want one. However, before you rush out and make a purchase, there are a couple of considerations: the power supply and the size of the plug. The power source will depend on your budget and the tools you already have. The size of the plug will depend on the type of work you are doing.
As already mentioned, pneumatic impact wrenches are by far the most popular, but that doesn’t mean they’re your only option. While they are relatively inexpensive and offer good power, they do require a compressor as a power source. Unless you already have a suitable compressor that will add a considerable amount to the cost of the tool. If you don’t have a suitable compressor and you only do occasional or light automotive work (like in a home workshop), then an electric or cordless wrench is probably a better option. These days, wireless keys are more than capable of light duty and are reasonably priced.
Your other main choice will be plug size. Most impact wrenches are available in sizes 1/4 “to 2” and even larger. For the home workshop, a 1/2 “is usually sufficient, and a 1” unit is more suitable if you are working on SUVs or light commercial vehicles. If you are working on large rigs, you may need a 2 “drive. Typically a larger than 2” drive is only used for industrial purposes.
There is another option that I have taken, and that is the style. The smallest wrenches are shaped like a screwdriver, but are only capable of delivering low torque. Most 1/2 “wrenches are of the” pistol grip “variety, shaped like a hand power drill. As you move towards heavier tools, you will start to find D and T handles that allow for a lot of clamping. firmer, and much higher torque levels The right style for you will depend on the type of work you will be doing, so keep that in mind when making a purchase.
Once you’ve decided on the power supply, size, and style of the plug, it’s time to hit the shops. Several good quality faucets are made by various vendors such as Ingersol, Draper, Sealy, Makita, and more. Compare prices and be sure to check out online stores, as there are real bargains.