DEWALT Expands ATOMIC™ 20V MAX Lineup with First-Ever Cordless 4-Inch Angle Grinder and New High-Performance Grinding Tools*
DEWALT, a Stanley Black & Decker brand recognized globally as a leader in professional-grade jobsite solutions, has announced the launch of its ATOMIC™ 20V MAX 4-inch Angle Grinder (DCG400)**. This release marks the company’s first cordless tool in the 4-inch category, designed to combine compact maneuverability with uncompromised power. Alongside this flagship product, DEWALT is also introducing three additional tools within the ATOMIC™ 20V MAX family: the 4.5-inch Angle Grinder (DCG402), the Die Grinder (DCG420), and the Right Angle Die Grinder (DCG422).
The expansion represents a significant step forward for professionals in industries such as fabrication, welding, and metalworking, where compact tools that deliver superior output without the encumbrance of pneumatic hoses are in high demand. By designing these cordless grinders to outperform select HP-rated pneumatic alternatives, DEWALT continues to drive the shift toward battery-powered solutions that promote safety, efficiency, and productivity.
Meeting the Demands of the Toughest Trades
Phil Bolton, Director of Product Management at DEWALT, emphasized the importance of these new releases for skilled workers in fabrication and construction.
“The fabrication trades – particularly fitters and welders – perform some of the most demanding applications in the field, making cordless products that meet their performance needs highly advantageous,” Bolton explained. “DEWALT is dedicated to meeting the needs of these trades through innovation and continuing to drive the adoption of cordless tools for safety, maneuverability, and productivity.”
Product Highlights Across the Lineup
ATOMIC™ 20V MAX 4 in. Angle Grinder (DCG400)*
- Provides up to 44% more power compared to 0.7 HP rated pneumatic grinders.
- Weighs 13% less than leading pneumatic alternatives, enhancing ease of use and reducing fatigue.
ATOMIC™ 20V MAX 4.5 in. Angle Grinder (DCG402)*
- Features a smaller gripping diameter than the DCG408B Angle Grinder for improved ergonomics.
- Up to 29% smaller in size compared to current DEWALT 20V MAX* grinders, offering better maneuverability in tight spaces.
ATOMIC™ 20V MAX Die Grinder (DCG420)*
- Delivers up to 19% more power than 0.5 HP rated pneumatic models.
- 45% smaller than Milwaukee’s M18 Die Grinder.
- Offers 2X the power of Milwaukee’s M12 Die Grinder, making it a competitive alternative in both size and performance.
ATOMIC™ 20V MAX Right Angle Die Grinder (DCG422)*
- Provides up to 22% more power compared to 0.5 HP rated pneumatic grinders.
- Maintains an equal gripping diameter to low-voltage cordless competitors.
- Generates up to 53% more power than Milwaukee’s M12 Die Grinder.
Control and Performance Features
Beyond raw power, the new grinder suite incorporates a wide range of features tailored for user safety and control. The DEWALT® PERFORM & PROTECT™ Anti-Rotation System quickly halts wheel movement in the event of a pinch, stall, or bind-up, helping reduce reactionary torque and keeping users safer during demanding applications.
Additional safety and performance features include:
- Electronic brake that stops the wheel within 1.25 seconds after the trigger is released.
- Lanyard Ready™ attachment points, allowing tools and batteries to be tethered securely for work at height (available on DCG420BLR and DCG400BLR models).
- Variable speed triggers (on DCG420 and DCG422) offering up to 24,500 RPM for task-specific control.
- Quick guard and wheel changes, including spindle lock design for tool-free adjustments (DCG400 and DCG402).
- Paddle switch activation, mimicking pneumatic tool operation for familiarity and safety.
- Forward exhaust system to direct air away from users and reduce overheating.
- Integrated LED lights on select models (DCG420 and DCG422) to enhance visibility in dim environments.
- TOOL CONNECT™ CHIP READY capability, enabling pairing with DEWALT’s jobsite asset management system for improved tracking and data insights.
Launch at FABTECH® 2025
These new tools will make their official debut at FABTECH® 2025 in Chicago, running September 8–11, where industry professionals will get a firsthand look at their performance and design advantages. Commercial availability will begin later this fall through DEWALT’s broad distribution network.
Continuing the Growth of the 20V MAX* System
The ATOMIC™ 20V MAX* series continues to expand the capabilities of DEWALT’s 20V MAX cordless platform*, which already includes more than 300 products. By adding compact grinders that rival or surpass pneumatic tools, DEWALT strengthens its reputation as a go-to brand for professionals requiring durable, high-performance solutions for the toughest jobsites.
About DEWALT
For over a century, DEWALT has been synonymous with professional-grade tools built to withstand the most demanding jobsite conditions. As part of Stanley Black & Decker, DEWALT continues to innovate across categories, from cordless power tools to jobsite technology solutions. The brand’s mission centers on delivering tools that improve productivity, enhance safety, and meet the ever-evolving needs of construction and fabrication professionals.
