Impact wrenches are powered socket tools, powered by compressed air or electricity, they are one of the most common and useful tools in both the professional, and serious amateur workshop. Impact wrenches work by spinning a "hammer" to a high speed, and then suddenly engaging the socket, to deliver a sudden burst of torque. While electric (both mains and cordless) and hydraulic models are available, it is the air impact wrench which is by far the most popular.
Cordless Power Tool
Air impact wrenches are by far the most popular of all air tools, and if you're doing any serious amount of automotive work you'll definitely want one. Before you rush out and make a purchase however, there are a couple of considerations - power source, and socket size. Power source will depend on your budget, and what tools you already have. Socket size will depend on the type of work you're doing.
Cordless Power Tool
As already mentioned, air impact wrenches are by far the most popular, but that doesn't mean they are your only choice. While they are relatively inexpensive, and offer good power, they do need 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 are doing only occasional or light automotive work (such as in a home workshop) then an electric or cordless wrench is probably a better bet. These days the cordless wrenches are more than capable of light work, and are reasonably priced.
Your other main choice will be socket size. Most impact wrenches are available in sizes from 1/4" to 2" and even larger. For the home workshop a 1/2" is usually sufficient, with a 1" drive being more suitable if you're working on SUVs or light commercial vehicles. If you're working on big rigs then a 2" drive might be needed. Larger than 2" is normally only used for industrial purposes.
There is one other choice to me made, and that is style. The smallest wrenches are shaped like a screwdriver, but they are only capable of delivering low torque. Most 1/2" wrenches are of the "pistol grip" variety, shaped like an electric hand drill. As you move up to heavier duty tools you'll start to come across D and T grips which allow for a much firmer hold, and so much higher torque levels. The correct style for you will depend on the type of work you'll be doing, so take that into consideration when making a purchase.
Once you have decided on a power source, socket size and style it's time to hit the stores. Good quality wrenches are made by a number of suppliers such as Ingersol, Draper, Sealy, Makita and more. Shop around for a good deal, and be sure to check out the online stores as there are real bargains to be had!
Impact Wrenches - How to Choose the Right Tool
Cordless Power Tool
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DEWALT Bare-Tool DC825B 1/4-Inch 18-Volt Cordless Impact Driver Feature
- Tool only with no battery, frameless motor for extended tool durability and life
- Compact size and weight allows access into tighter areas and reduces user fatigue
- 1,330 in-lbs of torque to perform a wide range of fastening applications
- 0-2,400 rpm/0-2,700 rpm for faster application speed
- Replaceable brushes for increased serviceability; textured anti-slip comfort grip for maximum comfort and control
DEWALT Bare-Tool DC825B 1/4-Inch 18-Volt Cordless Impact Driver Overview
The DC825 1/4-Inch Heavy-Duty 18V Impact Driver provides a light weight, compact and durable solution for a wide range of light to medium fastening applications. The DC825 offers exceptionally small size, just 5-3/4-Inch front to back and with the battery (not included) weighs only 4.6 lbs. The DC825 has a durable high speed motor that delivers 0-2,400 RPM for increased productivity. The DC825 has a frameless motor technology with replaceable brushes for easy serviceability, is compact in size but high with power and allows for superior airflow which increases motor durability and extended life. The variable speed reversing switch provides control for both setting and removing fasteners. Built-in features include a bright LED work light and onboard bit storage. The DC825 features advanced handle ergonomics and is equipped with a textured anti-slip rubber grip for extended user comfort and productivity. This for the bare tool and does not come with a battery or charger.
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Air Power Tool Sony Ipod Speakers
Fasten screws in hard-to-reach places with this two-position screwdriver.
The angle grip allows for comfortable handling in a wide range of tasks.
With 80 inch-pounds of maximum torque output, this screwdriver will stand up to a variety of job site tasks.
As one of the pioneers driving the cordless tool revolution, Makita changed the game with its breakthrough 18V LXT Lithium-Ion Cordless Series. Three years after its debut, Makita's LXT Series has grown from seven to over 35 tools, providing a wide range of cordless solutions for professional tradesmen. Makita also added 18V Compact Lithium-Ion for cordless power in a more compact size.
About Makita
Every Makita Lithium-Ion tool is backed by Makita's 3-Year Warranty that covers repair due to defects in materials or workmanship up to three years from the date of original purchase. Makita Lithium-Ion batteries and chargers have a limited 1-year warranty. Please see makitatools.com for complete details.
