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DEWALT DCG413B 20V MAX brushless angle grinder delivers 9,000 RPM with a paddle switch and kickback brake — tool only, ideal for concrete grinding and metal cutting.
Categories : tools
SKU : WOR-TOO-033
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The DEWALT DCG413B 20V MAX Brushless Angle Grinder is a 4-1/2" cordless grinder engineered for demanding tasks like concrete grinding, metal cutting, and masonry work. Featuring a powerful brushless motor that spins at up to 9,000 RPM, the DCG413B delivers corded-like performance with the freedom of the 20V MAX battery system. The two-stage paddle switch and electronic kickback brake give you confident control, making it a dependable addition to any contractor's tool collection.
When equipped with the right diamond cup wheel, the DCG413B becomes an efficient concrete grinder. Its 4-1/2" wheel size accepts standard diamond cup wheels, and the high RPM ensures smooth material removal. For best results on concrete, look for a diamond cup wheel rated for 9,000 RPM or higher.
The best diamond cup wheel for your DEWALT brushless grinder depends on the surface and finish you need. Dual-row diamond wheels offer faster stock removal for leveling, while single-row wheels are ideal for smoother finish work. Always match the arbor size (7/8" for this grinder) and ensure the wheel's maximum RPM rating exceeds 9,000 RPM.
The electronic kickback brake senses pinch, stall, or bind-ups and applies maximum braking force to stop the wheel in two seconds or less, reducing grinder movement and shutting the tool off. The two-stage paddle switch also requires two deliberate actions to start, and the E-Switch no-volt release prevents automatic restarts after a power interruption.
The DCG413B is a bare tool, so you'll need a DEWALT 20V MAX battery and charger. For extended cutting or grinding, use a high-capacity pack such as the DCB205 (5Ah) or DCB206 (6Ah). The brushless motor maximizes runtime, giving you more work per charge than brushed grinders.
Brushless motor delivers up to 9,000 RPM for fast cutting and grinding with no brush changes.
Kickback brake stops the wheel in 2 seconds or less when a pinch is detected, reducing movement and shutting off the grinder.
Two-stage paddle switch requires deliberate activation, reducing accidental startups.
E-Switch no-volt protection prevents the grinder from restarting after a power interruption.
4-1/2" wheel compatibility fits standard concrete and masonry wheels, including diamond cup wheels.
Model: DCG413B
Weight: 3.5 lb (1.6 kg)
Brake Type: Electronic Kickback Brake (stops wheel in ≤2 sec)
Dimensions: 13.0 x 5.0 x 4.5 in (33.0 x 12.7 x 11.4 cm)
Motor Type: Brushless
Switch Type: Two-stage Paddle
Power Source: 20V MAX Battery (tool only)
Product Type: Cordless Angle Grinder
No-Load Speed: 9,000 RPM
Wheel Diameter: 4-1/2 in
Package Contents: DCG413B angle grinder, side handle, wheel guard, wrench
Seller: Workbench World
MPN: DCG413B
The DCG413B's brushless motor and kickback brake make it a reliable partner for concrete surface prep. Pair it with a quality diamond cup wheel, and you can smooth uneven floors, remove coatings, and notch slabs. Its compact design lets you work in tight spots where a corded grinder would be cumbersome.
For aggressive stock removal, pick a double-row diamond cup wheel with segmented edges. For finishing, a continuous rim wheel offers smoother results. Always check the RPM rating and arbor size. With the DCG413B, you have the flexibility to switch between cutting wheels, grinding discs, and wire brushes.
To reduce downtime, keep two batteries charging while you work. A 5Ah XR battery can provide over 10 minutes of continuous grinding at full speed. FLEXVOLT batteries (in 20V mode) also work, giving you access to higher capacities. The brushless motor ensures you get the most from every watt.
No, the DCG413B is a bare tool. It works with any DEWALT 20V MAX battery, such as the DCB203 or DCB205.
Yes, the 4-1/2" grinder accepts standard diamond cup wheels with a 7/8" arbor. Always verify the wheel's max RPM is higher than 9,000 RPM.
The electronic brake detects a pinch or stall and immediately engages maximum braking force to stop the wheel, reducing grinder movement and shutting off the tool.
Loosen the spindle lock on top of the grinder, use the included wrench to remove the flange and nut, then swap the wheel and tighten with the wrench.
It is not designed to be removed. The two-stage trigger requires two actions to activate, adding safety.
Makes sparks.
It handles well. The safety brake is nice. The battery drains quickly.
I'm a metal fabricator. This grinder is my go-to. The paddle switch is easy to use with gloves. The kickback brake has saved my life. It's quieter than my corded one. The 9,000 RPM is plenty. I've used it all day on a 6Ah battery with breaks. Highly recommended.
Solid tool. Wish it came with a guard wrench.
I cut fence posts with it. No load speed is high. The ergonomic handle helps. It's lightweight. The safety feature is reassuring. It's a very good grinder.
Too heavy.
This thing tears up concrete. The dust doesn't hurt it. The power is constant. The paddle switch is intuitive. It's robust. I'm impressed.
It does the job. The guard is tricky to adjust. But it's powerful.
I'm a sculptor. This grinder is perfect for stone. It's smooth and powerful. The brake stops it fast. I can work for hours with a 6Ah battery. It's become essential.
Use it every day.
