The primary function of an impact wrench is to loosen and tighten nuts and bolts. Powerline workers do their share of loosening and tightening. But they also have some additional needs, such as drilling and boring holes into powerline poles, removing J-Hooks and pole steps, and working with uniquely shaped fittings found on transmission and distribution lines.
For an impact wrench to really have a positive impact on a lineman, it needs to provide a delicate balance of power, ergonomics, and convenience. A lineman’s impact wrench needs to be rugged and reliable, from its durable construction to longer-lasting batteries that are easy to charge.
The utility specialists at Milwaukee Tool shared some advice on the key features linemen should consider so they select a cordless impact wrench that meets their specific needs, and enhances their efficiency and safety on the job.
Torque Range
One of the most critical aspects of an impact wrench is its torque range. Linemen often deal with a variety of tasks, from loosening rusted bolts to tightening new hardware. A versatile impact wrench should offer a high maximum torque to handle tough jobs, while also providing lower torque settings for more delicate tasks.
Weight and Ergonomics
The weight of the impact wrench is another crucial factor. Linemen frequently work in challenging environments, such as in-bucket, on-ground, or while climbing. A lightweight solution reduces fatigue and increases maneuverability. Additionally, ergonomic design features—such as an extended handle that fits high-voltage, insulated safety gloves—can significantly improve comfort and control, reducing strain during prolonged use.
Durability
Durability is paramount for tools used in demanding conditions. Linemen should invest in impact wrenches made from high-quality materials that can withstand harsh environments. Features like robust housing and reinforced components ensure the tool can endure drops, impacts, and exposure to the elements. Integrated lanyard loops can also enhance durability by allowing for secure storage and easy transfer of the tool, preventing accidental drops.
Battery Life and Power Source
For cordless, battery-powered impact wrenches, battery life is a critical consideration. Linemen need solutions that can last through long shifts without frequent recharging. High-capacity batteries and efficient power management systems are essential. Additionally, tools that offer compatibility with a range of battery sizes and tools provide greater flexibility and convenience. Milwaukee Tool’s M18 system, for example, offers more than 275 solutions, providing compatibility on the job.
Socket Retention
Socket retention is vital, especially for linemen working at heights. Impact wrenches with pin detent anvils or friction ring designs ensure that sockets stay securely attached during use, minimizing the risk of falling sockets. This feature is particularly important for safety and efficiency when working on elevated platforms or in confined spaces.
Versatility
Versatility in an impact wrench allows linemen to tackle a wide range of tasks with a single tool. Features that allow for quick and easy bit changes, as well as accommodate various accessories such as augers and sockets, help drive a lineman’s efficiency. This type of adaptability also makes the tool suitable for multiple applications, from distribution to transmission to substation work.
Top Impact Wrenches for Linemen
Now here’s a look at 5 impressive cordless impact wrenches that are currently available in market and are sure to have an impact on a lineman’s productivity.
This mid-torque impact wrench’s unique combination of a brushless motor and next-generation Nuron batteries enables a faster concrete screw anchor setting. The SIW 6AT-22 is also designed for enhanced durability, thanks to that brushless motor and a 1/2” friction anvil ring. Also ideal for lag-bolting in wood, this 22V impact wrench features a maximum torque of 221 or 332 ft-lbs and delivers 3,500 impacts per minute.
This 7/16” cordless impact wrench is ideal for drilling with auger bits and driving fasteners into wood, metal, or concrete. A variable-speed trigger and 7/16” quick-release chuck enhance operator control. Powered by a 20V DeWalt battery, this tool also features a brushless motor and safety lockout switch. 500 ft-lbs of max torque. Delivers 2,400 impacts per minute.
This 18V, 1/2” square-drive impact wrench features a brushless motor with 240 ft-lbs of fastening torque and 430 ft-lbs of nut-busting torque. Three forward and three reverse Auto-Stop modes enhance efficiency, while four-speed power selection gives the operator precise fastening control in a wide range of applications. Extreme Protection Technology (XPT) is designed to provide improved dust and water resistance. Up to 4,000 impacts per minute.
The M18 FUEL 7/16” Hex Utility High Torque Impact Wrench w/ ONE-KEY features the POWERSTATE Brushless Motor and an all-new mechanism to provide linemen with 30% faster drilling speeds. Users have more power for effortless removal of rusted or corroded hardware with up to 750 ft-lbs of maximum torque. This 18V cordless impact wrench is also ergonomically designed for powerline workers, providing linemen with superior control whether in-bucket, on-ground, or climbing. The extended handle provides an increased grip surface, perfectly fitting high-voltage safety gloves for improved comfort, less fatigue, and balanced maneuverability. Additionally, the company says this is the industry's first 7/16” high-torque impact gun with a QUIK-LOK chuck for faster, one-handed bit changes.
The company says this impact wrench delivers industrial-level torque with the convenience of being cordless. It has a 3/4” square drive and delivers up to 500 ft-lbs of torque. The alloy steel square drive is designed for durability and direct socket engagement. An ergonomic, slip-resistant pistol grip and soft-start trigger enhance operator comfort. A cast reaction arm provides a safe and strong reaction start.
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