DeWalt ATOMIC 20V MAX Angle & Die Grinders | New Cordless Tools

The cordless jobsite just got another big boost. DeWalt is set to release four new ATOMIC 20V MAX grinders and die grinders. These tools expand the ATOMIC lineup with compact, ergonomic designs that pack the power of pneumatic grinders into the convenience of the 20V MAX battery platform.

If you’re a fabricator, welder, mechanic, or contractor looking to replace your air-powered tools, the new DeWalt ATOMIC 20V MAX Grinders deliver exactly what the trades have been asking for: size without compromise, safety-first features, and productivity that rivals corded and pneumatic options.

Why the ATOMIC Grinders Stand Out

DeWalt has designed these grinders with a very clear goal, replace pneumatic grinders without losing the performance that professionals rely on. By using brushless motors and optimized gearing.

The new DeWalt ATOMIC 20V MAX Grinders are engineered with high MWO (Maximum Watts Out) ratings that deliver the torque needed for demanding cutting and grinding applications, while electronic brakes stop wheels in under 1.25 seconds for improved safety and efficiency. Built-in ANTI-ROTATION Technology helps protect users from dangerous kickback events caused by pinches, stalls, or bind-ups, and forward exhaust systems reduce overheating to enhance jobsite comfort. For added convenience, these grinders are also TOOL CONNECT compatible, allowing asset tracking and smart tool management across busy jobsites.

These features, combined with compact housing designs, make the new ATOMIC grinders highly maneuverable in tight spaces, whether you’re grinding welds inside a frame, cutting in a congested mechanical room, or finishing detail work on stainless pipe.

ATOMIC 20V MAX 4″ Angle Grinder
(DCG400)

The DeWalt ATOMIC 20V MAX 4″ Angle Grinder (DCG400) marks an important milestone for DeWalt as its very first cordless 4-inch grinder. Built for professionals who need both portability and performance, this grinder combines compact design with serious cutting and grinding capabilities. Delivering up to 755 MWO and 12,500 RPM, it has the muscle to take on high-powered applications while maintaining the lightweight, ergonomic form that the ATOMIC series is known for. DeWalt has equipped this model with its ANTI-ROTATION System, a safety-driven feature that automatically stops the wheel when it senses a pinch, stall, or bind-up, helping to minimize kickback and keep operators in control. Pair that with an electronic brake that halts the wheel in just 1.15 seconds after releasing the trigger, and you’ve got a tool built with both productivity and safety in mind.

What makes this grinder stand out further is its adaptability and user-focused design. The slim, ergonomic housing is 13% lighter than comparable pneumatic grinders, allowing for long sessions with reduced fatigue and access into tighter spaces. The clip-on guard system makes it easy to switch between Type B and Type A guards, while the reversible flange accommodates both 3/8-inch and 5/8-inch arbor accessories. Add in quick wheel changes with the spindle lock, a forward exhaust system that directs heat away from the user, and a durable paddle switch with lock-off functionality, and it’s clear that every detail has been engineered to replicate the best aspects of pneumatic grinders without the hose and compressor.

Finally, this grinder is TOOL CONNECT Chip Ready, meaning it can be paired with DeWalt’s TOOL CONNECT app for jobsite asset tracking and management. With its combination of compact size, high torque output, advanced safety systems, and smart jobsite integration, the DCG400 delivers on DeWalt’s promise of “Where Size Meets Power.” Whether you’re fabricating steel, cutting pipe, or grinding welds, this cordless grinder gives you the freedom of mobility and the strength to replace pneumatic tools once and for all.

ATOMIC 20V MAX 4.5″ Angle Grinder
(DCG402)

The DeWalt ATOMIC 20V MAX 4.5″ Angle Grinder (DCG402) is designed to bring cordless convenience and pneumatic-like performance to one of the most commonly used grinder sizes on the jobsite. Powered by a brushless motor that delivers up to 760 MWO and 11,000 RPM, this tool is built to handle heavy-duty cutting and grinding applications while remaining compact and comfortable to use. Its slim body design features a smaller gripping diameter, giving users improved control in tight spaces without sacrificing power. Like the rest of the ATOMIC grinder lineup, the DCG402 comes equipped with DeWalt’s ANTI-ROTATION System, which senses stalls, pinches, or bind-ups and stops the wheel instantly to minimize dangerous kickback. Coupled with an electronic brake that halts rotation in just 1.25 seconds after the trigger is released, this grinder provides both productivity and peace of mind on the job.

Beyond safety, the DCG402 emphasizes user efficiency with a range of smart features. The clip-on guard system makes it simple to switch between Type B and Type A guards, while a spindle lock allows for fast wheel changes without the need for multiple wrenches. A forward exhaust system directs air away from the user to help manage motor heat, extending tool life and enhancing comfort during extended use. The grinder is also TOOL CONNECT Chip Ready, giving contractors the ability to track tools and manage assets through DeWalt’s digital app platform. For added stability, a side handle is included, making it easier to control the grinder during demanding applications.

Compact, powerful, and designed with safety at its core, the DCG402 represents DeWalt’s commitment to giving professionals the cordless freedom they need without compromising on durability or performance. Whether cutting rebar, grinding welds, or prepping surfaces, this 4.5″ ATOMIC grinder is engineered to replace pneumatic grinders and elevate productivity across the jobsite.

ATOMIC 20V MAX Die Grinder
(DCG420)

The DeWalt ATOMIC 20V MAX Die Grinder (DCG420) delivers the kind of performance that makes cordless tools a true replacement for pneumatics. Compact and slim in design, it offers up to 445 MWO of power and variable speed control reaching 24,500 RPM, giving users the flexibility to match speed to application without sacrificing torque. Compared to pneumatic grinders, the DCG420 offers up to 19% more power than a 0.5 HP model, and when stacked against competitors, it’s 45% smaller than Milwaukee’s M18 Die Grinder while delivering twice the power of Milwaukee’s M12. This combination of compact size and serious output makes it an essential solution for mechanics, fabricators, and contractors who need to access tight workspaces without losing productivity.

DeWalt has built in a series of safety and usability features to make this die grinder practical for daily use. The ANTI-ROTATION System quickly shuts down the wheel when it detects a pinch, stall, or bind-up, preventing dangerous kickback. An electronic brake halts the wheel in under one second, ensuring greater control during tool operation. For added efficiency, the spindle lock system allows for fast wheel changes without extra wrenches, while the forward exhaust system keeps heat away from the user and helps maintain motor performance over long runs. A paddle switch with lock-off functionality replicates the familiar feel of pneumatic die grinders, making the transition to cordless nearly seamless.

Another highlight is the integrated LED work light, which improves visibility in darker, more confined areas, making precision grinding and deburring tasks easier. For modern jobsite management, the DCG420 is also TOOL CONNECT Chip Ready, allowing integration with the DeWalt TOOL CONNECT app for tracking, monitoring, and asset management. By combining raw power, advanced safety systems, and compact versatility, the DCG420 is built to redefine expectations of what a cordless die grinder can do, proving once again that in DeWalt’s ATOMIC lineup, size meets power.

ATOMIC 20V MAX Right Angle Die Grinder
(DCG422)

The DeWalt ATOMIC 20V MAX Right Angle Die Grinder (DCG422) rounds out the upcoming lineup with a cordless solution specifically designed for working in confined or hard-to-reach spaces. Delivering up to 455 MWO, this right-angle grinder brings plenty of muscle in a compact body, allowing users to tackle high-powered grinding, deburring, and finishing applications with greater maneuverability than traditional straight grinders. Its ergonomic profile offers the same gripping diameter as a low-voltage cordless die grinder, ensuring comfortable control without compromising strength. Equipped with DeWalt’s ANTI-ROTATION System, the DCG422 provides critical safety by shutting down the wheel when it senses a pinch, stall, or bind-up, reducing the risk of dangerous kickback. Paired with an electronic brake that stops the wheel in under one second, this tool delivers confidence and precision on every cut.

Beyond safety, this grinder is built for durability and demanding environments. A rugged glass-filled nylon housing shields the tool and battery against oils, solvents, and other harsh jobsite conditions, making it a reliable option for industrial, mechanical, and automotive applications. Compared to its competition, the DCG422 offers up to 53% more power than Milwaukee’s M12 Die Grinder, giving users the ability to work faster and more productively when deadlines matter most. Like the rest of the ATOMIC grinder series, it’s also TOOL CONNECT Chip Ready, offering full compatibility with DeWalt’s TOOL CONNECT app for jobsite asset tracking and tool management.

Compact, powerful, and built for real-world use, the DCG422 Right Angle Die Grinder is more than just another cordless option, it’s a true pneumatic replacement that frees users from compressors and hoses while delivering the torque and control needed for precision work. For contractors, mechanics, and fabricators who need both access and power, this grinder demonstrates why DeWalt continues to position the ATOMIC 20V MAX line as the place “Where Size Meets Power.”

DeWalt’s expansion of the ATOMIC 20V MAX grinder lineup proves that compact tools no longer mean compromising on performance. From the first-ever cordless 4″ angle grinder to the high-powered 4.5″, straight die grinder, and right-angle die grinder, each model is engineered to replace pneumatics with cordless convenience, advanced safety systems, and the kind of torque professionals need on the job. With launches rolling out in late 2025 and early 2026, these grinders give contractors, fabricators, and mechanics more freedom, more control, and more productivity, without the hoses, cords, or downtime. For anyone already invested in the 20V MAX platform, the new ATOMIC grinders are a natural upgrade that bring size, power, and safety together in one system. Don’t hesitate to reach out at cs@ohiopowertool.com or 614-481-2111 with any questions, comments, or concerns, and be sure to follow us on all your favorite social media channels to stay in the know on all the latest announcements, deals, news, and more!