Dewalt DW840 7 in. 8,000 RPM 13.0 AMP Angle Grinder

Model: dewndw840
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CA Residents
Prop 65 Warning
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WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Some examples of those chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically-treated lumber. Refer to product manual/instructionsCancer
Dewalt DW840 7 in. 8,000 RPM 13.0 AMP Angle Grinder Model: dewndw840

Product Features & specs :

Dewalt DW840 7 in. 8,000 RPM 13.0 AMP Angle Grinder

High-speed, AC/DC-powered grinder provides professional-grade performance and versatility. Excellent power-to-weight ratio delivers superior task efficiency while minimizing worker fatigue. Motor's sealed ball and roller bearings ensure smooth, reliable operation. Ergonomic trigger handle and five-position side paddle help enhance workers' comfort levels and overall tool control. Fully adjustable, keyless guard protects workers from airborne dust and debris. Spindle-lock button enables one-wrench grinder/cutter wheel changes. External brush caps simplify routine maintenance tasks.
  • High-speed AC/DC motor.
  • Excellent power-to-weight ratio
  • Sealed ball and roller bearings
  • Ergonomic trigger handle and five-position side paddle
  • Fully adjustable, keyless guard
  • External brush caps
  • Spindle-lock button
What’s Included:
  • Two adjustment wrenches
Switch Type
16.1 in.
8 lbs.
Warranty Term
Manufacturer's limited three-year warranty.

Reviews :

3.8 / 5.0
4 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Powerful and light compared to 4hp
Powerful but comparatively light. Wish it had a type 1 guard available
August 30, 2019
Originally posted at
Initially it wouldn't run, bumped it with palm of my hand and it started. Tried to actually use it for the first time and it won't stay running. I have to keep bumping and pulling the trigger.
April 25, 2019
Originally posted at
Excellent Grinder
I bought this to do Concrete Grinding to prep for a Tile Floor. Using the Dewalt 7" XP Turbo Diamond Blade this took the high spots down without any problems. I recommend this Tool!
April 18, 2015
Originally posted at
Thisd thing will flat move some metal! I love it. The only downside is it wears me out after riding it all day. I'm thinking about gettng a 4.50" angle grinder for the small stuff.
June 21, 2010
Originally posted at

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Most DEWALT® Tools purchased on or after January 1, 2004 come with a warranty package that includes:

Three-Year Limited Warranty. DEWALT will repair, without charge, any defects due to faulty materials or workmanship for three years from the date of purchase. This warranty does not cover part failure due to normal wear or tool abuse. For further detail of warranty coverage and warranty repair information, visit or call 1-800-4-DEWALT (1-800-433-9258). This warranty does not apply to accessories or damage caused where repairs have been made or attempted by others. This warranty gives you specific legal rights and you may have other rights which vary in certain states or provinces.

One-Year Free Service Contract. DEWALT will maintain the tool and replace worn parts caused by normal use, for free, any time during the first year after purchase.

90-Day Money Back Guarantee. If you are not completely satisfied with the performance of your DEWALT Power Tool, Laser, or Nailer for any reason, you can return it within 90 days from the date of purchase with a receipt for a full refund - no questions asked.