The best cordless impact wrenches are also known are impact guns, air wrenches, rattle guns, impactors, windy guns, etc.
The socket wrench has a socket at the end that is used to turn a fastener such as nuts and bolts. The torque to fasten or unfasten a nut or a bolt may be delivered by power. Thus an impactor is a power tool designed to deliver a high torque to reduce the exertion for the user. It stores energy within a rotating mass and delivers it via an output shaft. The most common power source is compressed air but hydraulic power and electric power are also used. Battery powered devices have become popular since the mid 2000s.
How does an Impact Wrench function?
The impact wrench functions by storing potential energy in a rotating mass that releases it in small impacts against the output shaft. This puts a lot more force against the nut of bolts you are trying to tighten or loosen and takes the strain off your wrist.
The bit sits still on the nut and turns only when the hammer hits the bit at each turn when it engages with the output shaft.
The output shaft is fitted with a hammer and spring in series. The spring loaded hammer lifts up, spins around to be driven down by the spring and forward by the drill at high speeds.There are slots cut into the hammer that slide onto the output shaft.
Springing the hammer on to the output that transfers the impact and torque to the bit that turns the nut or bolt you are trying to tighten or loosen. The motor generates high amounts of torque much more than any human can produce. This hammer shaped mass continues to turn thus the operator feels only a tiny impact.
Best Cordless Impact Wrenches in 2021
Milwaukee 2763-22 M18
Since 1924 Milwaukee Tools have been enriching various industries by their cutting edge focus on innovative trade specific solutions. They bring to various industries the lithium-ion battery such as the M12, M18 and M18 systems. They enhanced these systems further with time-saving accessories and continue to develop advanced solutions to increase productivity at unmatched durability.
Design and Build
The Milwaukee 2763-22 M18 delivers a superior performance with 700 feet/pound of torque to tighten or loosen fasteners. It can tighten nuts at up to 1000 feet/pound with two times more runtime than previous models. The wrench out performs other wrenches due to the brushless motor that runs cooler as it doesn’t have components that don’t wear easily.
The Redlink Plus intelligence let’s the operator choose between two fastening modes. These modes run on the proprietary drive control feature signature of Milwaukee. The Red lithium-ion XC 4.0 pack comes with a superior construction and electronics that delivers twice the work time than any other model. The half inch anvil has a friction ring for quick and easy socket change.
The Milwaukee M18 delivers a mechanical advantage to apply a torque that turns rotatory fasteners like nuts and bolts. This cordless tool is very useful tool in any automobile owners trunk for changing tires. Any garage or mechanical works workshop would find it useful. Carpentry and construction works that work with turning fasteners would find this a handy tool.
You can do small jobs around the home like install a TV rack or mount, tighten floor or side boards, Mount another board to the dashboard or mantelpiece. Replace the rusted nuts and bolts to refurbish and renew your property.
The Milwaukee M18 let’s you choose between two fastening modes. You get between 700 feet/pound and 1000 feet/pound of torque. The wrench turns on a ½ inch anvilto unscrew or screw on fasteners.
The Milwaukee M18 comes with two Lithium-ion batteries to reduce the down time. This extended capacity battery pack improves performance. There is a M18 and 18 multi-voltage charger and all this fits into a carrying case. The tool comes with a one year warranty that can be extended to three years.
Why this is the best of the lot
The Milwaukee delivers the power of a pneumatic drill in this battery powered wrench. It delivers unparalleled fastening torque that tightening or loosens turning fasteners like nuts and bolts. The battery delivers twice the runtime due to the M18 technology and supplement battery that eliminates the down time. The Redlink+ intelligence controls the drive control that protects against over discharge, overheating and overload. There’s a tool free socket change with the half inch friction ring anvil. The operator can sustain long hours of use due to the soft grip. The unit comes with a pair of battery packs, a multi volt charger and carrying case.
DEWALT is another well-known dependable name in the power tools industry. The develop, design and optimise workhorse solutions for professionals. They have developed an entire ecosystem such as the tools, their accessories and supporting services. This instils confidence in the tools that they will be able to handle the toughest jobs anywhere. They offer cordless solutions via the 8V MAX to 40V MAX. These tools are designed to certain specifications to meet a wide range of needs and applications.
Design and Build
The DEWALT DCF899P1 has a heavy duty brushless motor that spins with a maximum torque of 700 feet per pound and it’s breakaway torque is 1200 feet per pound – a multi speed selector that delivers three speeds between 0-400 RPM, 1200 RPM and 1900 RPM – an LED work light with a 20 second delay also a half an inch anvil with detent pin, the model is available in hog ring – a battery fuel gauge on this compact ergonomically designed tool that is only 8.8125 inches.
The DEWALT DCF899P1 is a 20 volt wrench with a Maximum XR brushless motor that spins a half inch detent pin anvil at three speeds. This versatile tool is perfect for a wide variety of fastening applications. The compact ergonomic design is perfect comfort and control to sustain hours of use. The LED lights are to illuminate dark narrow spaces.
The DEWALT delivers 2400 Impacts Per Minute (IPM). It has three speeds of 400 RPM, 1200 RPM and 1900 RPM. This cordless tool is 8.8 inches in length at only 7.2 pounds making it one of the most compact tools in the market. It delivers a maximum torque of 700 feet-pound.
The DEWALT DCF899P1 with a detent pin anvil is accompanied by a 5.0 Ah battery and a multi-voltage charger. The tool comes with the standard DEWALT warranty of 3 years, 1 year free service and 90 days money back guarantee.
- Excellent warranty
- Compact powerful tool
- Multi-speed selector
- Battery flattens rapidly
Best for automotive industry
PORTER-CABLE is a subsidiary of Stanley Black and Decker. They manufacture power tools such as sanders helical circular drives, band saws, etc. They make pneumatic, electric and battery powered tools. And their world famous tools are used by professionals from every field of work.
Design and Build
PORTER-CABLE PCC740LA is a cordless impactor with a powerful engine that produces a torque of 330 feet-pound. The half inch hog ring is for quick socket change turned using a pro-grade lithium-ion battery that maximises performance and life. The impactor has a chemical resistant housing that desirable for automotive industry. The tool produces a heavy torque at 1700 RPM for high speed applications. The LED light lights up dark and dimly lit places. With the battery the tool weighs 6 pounds and has a length of 9.9 inches. The overmold grip is meant for grip and control. The tool is powered by 4Ah lithium-ion professional grade cells.
This turning tool can be used to fasten nuts bolts and screws of any size. As this is a cordless told it finds a wide application with mechanics, construction workers, contractors, etc. It is a great tool to have handy at home for small projects such as screwing on some frames or cabinets. It is also a handy tool in a trunk of a cars to change tires, etc.
PORTER-CABLE PCC740LA is a cordless power tool that turns the fasteners at a torque of 330 feet-pound. As it has a variable speed between 0-1700 RPM Making impacts at 2500 IPM. The tool is compact at 6.6 inches and 4.6 pounds.
PORTER-CABLE PCC740LA comes with the tool and a 20 volt battery. There is a three year warranty on the tool.
- Maximum torque of 330 feet-pound
- Spins at a variable speed of 0-1700 RPM
- Delivers up to 2500 Impacts Per Minute
- 20 volt battery
- 4Ah lithium-ion battery
- Good ergonomics
- Nonslip grip
- Half inch hog ring for quick socket change
- The tool did not perform as expected
Hitachi is a well-known brand that has a presence in power, industrial systems, lithium ion battery technology, logistics, etc. The company was established in 1910 and has come light years from the first electric motor. This industrial giant devotes a large amount of resources into research and development of power tools. The Hitachi Koki is the result of this effort. This company develops state of the art gasoline, pneumatic and electric powered industrial tools to facilitate the tradesperson.
Design and Build
The Hitachi WR18DBDL2 is a 18 volt wrench with a brushless motor powered by a 3.0 ampere-hour rechargeable battery. It has a ½ inch square detent for a powerful grip and winding power of 225 feet-pound. The 4 mode selector spins between 0 to 1000 to 2700 RPM to tackle a wide range of applications and discharging toughest jobs.
There are LED lights that illuminate dark and narrow spaces. The unit is only 3.3 pounds and is 145 mm in length which is 23 mm short than conventional models making it compact. It uses a detachable rechargeable lithium-ion battery and it weighs lighter than NiCd batteries.
The Hitachi WR18DBDL2 is a powerful wrench for loosening or tightening turning fasteners. It is a perfect tool for contractors, construction workers, carpenters working with scaffolding where fasteners are used, garage and ship building, etc.
The WR18DBDL2 produces a maximum tightening torque of 305 Nm and can fix up to 350 bolts per charge which is 1.6 times the previous model. There is a tightening mode selector for various applications. The low and medium light is for light work such as installing pipes and scaffolding. The heavy load work such as assembling steel frames. There is a delicate mode for small diameter screws.
The Hitachi WR18DBDL2 comes with a rapid charger, a pair of 18 volt 3.0Ah batteries and a storage case. The tool comes with a 6 month warranty.
- Small yet powerful
- Four mode selector
- Rechargeable batteries
- There is no detent ball that keeps the socket in place
Best for Heavy Duty
Ryobi R18IW3 Impact Wrench
RYOBI makes power tools and outdoor tools that are affordable with features sought after by value and quality conscious professionals. The Ryobi 18 volt ONE+ system, is a collection of 100 products that delivers versatility. The lithium-ion technology powers the user through projects such as plumbing, lighting, fastening, etc. All the RYOBI tools use the 18 volt battery platform for its new products. These batteries fit the original line of Ryobi tools designed in 1996. From recreation, hobby or jobsite be the proud owner of ONE + range.
Design and Build
Ryobi P1833 is a three speed ½ inch impact wrench that produce 300 feet-pound of torque at 3200 IPM for heavy applications. The three speed selector let’s you choose between speeds giving you better control and a wide range of fastening applications.
The 3 speeds range between 0-2900 RPM, 0-1800 RPM for precision fastening and 0-2300 RPM for a controlled driving depth and precise tension in the fastener. The Tri-LED helps improve work area visibility. The ½ inch square detent pin is for secure socket retention.
The new and improved overmold helps a better and nonslip grip. It is powered by a 4Ah lithium-ion battery that makes to tool last four times longer and lighter than tools that use NiCd batteries. There is a fuel gauge that indicates the amount of charge left. The dual chemistry charger powers up the battery in less than ½ an hour.
The indicator lights show the battery status while the temperature LED indicate if the battery is hot or cold. The batteries that are stored on the charger not only get charged but are also conditioned for performance. Besides the maintenance mode there is an energy saver mode that maximise battery life.
The Ryobi is perfect for heavy duty turning applications. The LED lights let you see in dimly lit places while the battery indicator let’s you know the charge left of the tool. The three speeds lend themselves to varying applications.
The tool gives 300 feet-pound of torque at 3200 IPM. The selector delivers three speeds at 0-2900 RPM, 0-1800 RPM and 0-2300 RPM.
The tool comes with a battery and a 3 year warranty.
- The universal Ryobi 18 volt ONE+ system
- Three speeds
- LED lights
- Very noisy
Best for Automative Technicians
Ingersoll Rand W1130-K2
Ingersoll Rand have been industry leaders since last 100 years. They have a deep understanding of the power tools used by professionals. They design tools for industrial maintenance, automotive services, etc. Their engineers are aware that their cordless tools have to do the job, do it fast and accurately and do it every time.
Design and Build
The Ingersoll Rand W1130-K2 is a 12 volt cordless impact wrench with a 0.375 inches square drive. It is a ergonomically designed tool for operators comfort that delivers a 100 feet-pound of reverse torque. The all metal body is durable, robust, and optimized for maximum efficiency and power. There is a variable speed switch has an electronic brake for maximum tool control. The tool is durable with a wear resistant and impact resistant body. The tool has a chemical resistant body with three point pads that add stability while protecting the tool. The lightweight design with small handles reduce fatigue due a comfortable hold.
The Ingersoll Rand W1130-K2 delivers a turning torque of 100 feet-pound to turn the fasteners of any kind. The 1/4th inch hex drive is able to turn all sorts of sockets and bits. You can turn them at variable speed with electronic brake. The brushless motor delivers 30 feet-pound of torque with the manual torqueing.
The Ingersoll Rand W1130-K2 has a 12 volt tool with a 3/8th inch square drive that delivers 100 feet-pound of torque. The tool weighs 5.6 pounds with dimensions of 4.7 inches by 1.6 inches by 3.5 inches of length, width and height.
Ingersoll Rand W1130-K2 comes with the battery charger, a pair of 12 volt batteries and a years warranty.
- 12 volt lithium-ion batteries
- ¼ inch hex drive
- Lightweight ergonomically designed tool
- 375 inches square drive
- 100 feet-pound of torque
- Variable speed with electronic brake
- The tool is loud
PORTER-CABLE started as a machine and tool shop In 1906. Since then the company has built it’s reputation the hard way. They have consistently set quality, performance and reliability standards in one industry to the next. Generations have made a consistent dedicated effort to earn the trust of generations till date.
Design and Build
PORTER-CABLE PCC740B is a 20 volt cordless wrench. It is light weight and balanced at 6 pounds to deliver 330 feet/pound of torque for heavy jobs. The motor delivers a maximum torque of 1650 RPM that drives in large fasteners with ease. The variable speed let’s you control the revolutions per minute for precise control of your jobs.
There is a ½ inch hog ring that facilitates socket change. The 20 volt battery ensures maximum performance and long life. The wrench is ergonomically designed with an overmold grip for automotive industry with a chemical resistant casing. It is only 9.9 inches long this makes this tool highly manoeuvrable.
PORTER-CABLE PCC740B has a chemical resistant housing that makes it perfect for industries that use resins, varnishes, oils. The overmold grip gives the operator a better control of the tool while turning fasteners on wood, construction or metal. The ½ inch hog ring helps easy socket change making it a versatile tool. The LED lights light up dark corners and narrow spaces for better visibility. The 1650 RPM let the user tighten or loosen the fasteners quickly and easily.
The cordless PORTER-CABLE PCC740B utilises a 20 volt battery and has a ½ inch anvil size. It delivers a 2500 IPM, a no load speed of 1700 RPM and a maximum torque of 330 feet-pound. The tool is 6.6 inches long and 4.6 pounds in weight.
This PORTER-CABLE PCC740B is a bare tool that comes with a limited 3 year warranty, one year free service and 90 days money back guarantee.
- Maximum torque of 330 feet-pound
- 1700 RPM
- Variable speed
- Battery does not make enough power
Best for Lug Nuts
This Makita from the 18 LXT series work on 18 volt lithium-ion batteries. It is a part of the world’s largest line-up of tools. They are the fastest charging tools in their category. Due to this feature the tools spend less time sitting instead of working.
Design and Build
The Makita XDT111 has a single touch quarter inch hex chuck that enables a quick change of bits. There are 2 LED lights that help see your work area. The handle has an ergonomic handle with a rubberized grip for comfort. This impact wrench comes with a proprietary anvil and hammer mechanism made of the best steel strengthened by a unique hardening process. This grips the fastener and drives it firmly. The Extreme Protection Technology (XPT) makes the tool dust and water resistance. It makes these perfect tools for tough and rugged work sites. The four pole motor has a four brush design that spins out 26% more RPM without losing torque. It is supported by a 18 volt lithium-ion battery. That delivers a 0-2900 RPM and 0-3500 IPM at 1460 inch-pound of torque.
The Makita XDT111 is compact to drive a powerful 4 pole motor that drives the output shaft for driving and fastening jobs.
The Makita XDT11 has a 4 pole motor driven by a 18 volt lithium-ion battery. The battery charges quickly reducing the down time. The motor spins at a variable speed up to 2900 RPM and 3500 IPM to deliver 1460 inch-pound of torque. Even while being so powerful the tool is only 5.385 inches long and 3.9 pounds in weight.
The Makita XDT comes with a 3.0 Ah lithium-ion battery, a rapid optimum charger and tool case. There is a 3 year warranty on the tool.
- Quick charge battery
- Litigation battery for lighter tool
- 1460 inch-pound of torque
- Light at 4 pounds
- variable speed up to 2900 RPM
- Making impacts at 3500 IPM
- The tool becomes hot quickly
Best Quick Change
DEWALT Bare Tool DC820B
DEWALT has always been the forerunner in the development of cordless power tools. The 18 volt range is well known for its excellent build and quality. They are flexible and tough thus called FlexVOLT. They run on lithium-ion batteries which make the tool lighter.
Design and Build
The DEWALT DC820B is an 18 volt cordless wrench with a compact lightweight design. The frame less motor has a long durable life. The motor delivers a 1740 inch-pound of torque that turns any fastener with ease. It delivers a variable speed of 0 to 2400 RPM or 0-2700 IPM. The brushes are replaceable, this increases the serviceability and life of the tool.
The DEWALT DC820B has a frameless motor to extend the tools life. The anti-slip grip minimises fatigue and maximises performance in various applications. The lithium-ion battery makes the tool lighter and compact to reach into narrow areas. The magnesium case shelters the gear and the it’s transmission extends it’s durability. The high torque handles a wide range of fasteners at higher speeds. The impacting mechanism directs the torque to the fastener minus the kickbacks.
The DEWALT DC820B delivers a first class performance while maintaining durability due to its excellent ergonomics. It is an 18 volt, half an inch cordless impactor that drives lag screws or loosens corroded nuts. The half an inch drive delivers a variable speed of 0-2400 RPM and impact 0-2700 IPM. These drive the fastener at 1740 inch-pound of torque. All these features are powered by 18 volt batteries. The tool weighs only 2.2 pounds and is 5.75 inches long. There is a ½ inch detent pin anvil to hold sockets.
This DEWALT DC820B is bare tool and covered by a three year limited warranty on defective materials and workmanship.
- Brushless motor
- Excellent ergonomics
- Loosens or tightens all sorts of fasteners
- Three year warranty
- Variable speed and impact
- Cordless tool
- Lithium-ion battery
- Not enough power to turn nuts
Bosch was established in 1886 they have been making power tools that meet the highest standards of precision, speed and robustness. Their latest range of cordless tools is engineered for excellence as the lithium-ion technology is enhanced to lend higher power to the tool while keeping it light. Their power tools such as the impact wrenches, drills, rotary hammers, demolition hammers are backed by robust material and diamond technology.
Design and Build
The Bosch IWMH182-01 has a 18 volt brushless motor that delivers twice the power of a conventional motor. There is an electronic motor protection (EMP) that guards against overloads extending the tools life. The ergonomic design reduces fatigue of holding and operating the tool or during difficult applications. The lightweight and compact design extends the applications which is extended by three LED lights that illuminate the work space minus the shadows.
The Bosch IWMH182-01 has a brushless motor on a cordless wrench. This makes it highly portable and dextrous for many professionals like mechanics, contractors, and workers in all trades that deal with nuts, anchors and bolts. The unit has a ½ inch square drive with a detent for a secure socket retention.
This Bosch has a brushless motor delivers 1600 inch- pound of torque and weighs only 3.6 pounds. This is an outstanding torque to weight ratio. It has a half an inch square drive. The battery works at 4 amperes per hour delivering a maximum torque of 184 feet – pound. The wrench delivers between 0-3500 BPM and 0-2500 RPM.
The Bosch IWMH182-01 comes with an impact wrench, two 18 volt lithium-ion batteries, one battery charger, a belt clip and a carry bag.
- Brushless motor
- 18 volt Li-ion battery
- Maximum of 2500 RPM
- Electronic motor protection
- Protects against power surges
- Half inch square drive with detent
- Maximum torque of 184 feet/pound
- Too loud