The DEWALT DCG405FN is a cordless 18 V brushless angle grinder engineered for cutting, grinding, polishing and surface prep across metal, stone, concrete and other materials. Its compact flat-head design lets you work easily in tight and confined spaces, while the brushless motor delivers efficient power, longer runtime and reduced maintenance compared with brushed models.
Key Features
🔋 Brushless Motor – Provides improved efficiency, power delivery and longer tool life.
🛠️ Cordless 18 V XR System Compatible – Runs on DEWALT 18 V lithium-ion batteries (sold separately), giving mobility without a cord.
⚙️ 125 mm (5″) Disc Size – Standard disc size for grinding, cutting and polishing applications.
🔁 9,000 RPM No-Load Speed – Fast rotation for effective cutting and grinding performance.
🛡️ Electronic Brake – Quickly stops the wheel when the trigger is released for added jobsite safety.
⚡ Electronic Clutch & Soft Start – Reduces kickback if the disc stalls and helps smooth motor engagement at startup.
👊 Rubber Overmould & Ergonomic Design – Comfortable grip and better control reduce fatigue during extended use.
🌀 Mesh Debris Covers – Helps limit dust entering the motor for improved durability.
🔧 Side Handle (2-Position) – Offers better leverage and stability when cutting, grinding or polishing.
🪛 Keyless Guard Adjustment – Quick and easy guard positioning without tools on many versions.
Typical Specifications
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Power Source: Cordless, 18 V DEWALT XR battery (not included)
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Motor: Brushless DC motor for efficient operation
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Disc Diameter: 125 mm (5″)
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No-Load Speed: ~9,000 RPM
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Weight: ~1.75–1.8 kg (body only)
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Spindle Thread: M14 standard fitting
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Ergonomics: Rubber overmould grip, slim profile
What You Can Use It For
✅ Cutting: Metal pipe, steel, rebar, sheet metal and masonry
✅ Grinding & Deburring: Welds, surface prep and chamfering
✅ Polishing: Metal and stone with appropriate discs
✅ Sanding/Finishing: With suitable attachments and discs
This angle grinder is ideal for tradespeople, metalworkers, fabricators and DIY enthusiasts who need a portable and powerful cordless grinder that performs similarly to corded models while offering the convenience of battery power.