Dewalt DWE402K In-depth Reviews 

 July 2, 2022

By  Jonathan Maxwell

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When it comes to angle grinders, you need one that's versatile and reliable. There are too many low-quality grinders being sold that don't match up to user's expectations. That's why you need to take your time when shopping for your first angle grinder.

We want to help you by reviewing the Dewalt DWE402K. Unlike its competitors, the grinder offers enough stability and utility to complete all of your projects. By the end of this post, you'll know if this grinder is the right one for you.

About The Dewalt DWE402K


  • 11 Amp AC/DC Motor
  • Dust Ejection System
  • Paddle Switch Safety Lock
  • Single-Touch Guard
  • 11,000 RPM


The Dewalt DWE402K is designed for professional and for DIY usage. This grinder features a fast grinding speed of 11,000 RPM making it easy to cut through stocks of wood in one pass. You can find this angle grinder on Amazon at a price around [amazon fields="B00U24VG0W" value="price"].

Dewalt DWE402K comes with an automatic damage prevention system. This feature removes debris, dirt, and dust from getting inside the machine. And, it prevents the angle grinder from receiving any damage when held by the user. Get this angle if you want an operational tool that's worry free.

When it comes to size, you need an angle grinder that's a mixture of lightweight and durable. The Dewalt DWE402K weighs in at 7.7.which way lighter than competing grinders. You'll have a tool that's easy to use and is light enough to carry around your workspace.

The disc size is another important feature worth mentioning. For instance, the machine's wheel is at 4 ½ large which makes it capable of handling professional tasks. Due to this exceptional size, this machine has a strong motor that increases the grinder's overall efficiency.

Consumers across the board liked the angle grinder's tool free management feature. The grinder comes with a quick release wheel, which needs no tool to install and remove items. Thus, allowing the manage the attachments according to their needs and preferences.

Your angle grinder's pace is highly dependent on its motor power. The larger the RPM, the better the angle grinder is at cutting harder materials. The Dewalt DWE402K has an 11 amp motor which runs at a speed of 11,000 RPM. Making it fast, reliable, and efficient for everyday use.


But, there is one small flaw. The angle grinder needs strong hands to hold it for a longer period. For novice carpenters and metalworkers, this might be a problem for some. Practice holding and using your machine to receive its benefits.

Still, we believe that the Dewalt DWE402K is the best angle grinder for personal and professional purposes. With so many pros and only one con, it’s worth your initial investment. Buy this grinder if you want to see high-quality results and cut metal more efficiently.

Buying Advice

We've created this section for first-time shoppers who are still confused. Here, we'll briefly discuss a few specs that you should know before buying. Knowing your specs gives you a clearer understanding of how your angle grinder works, and lets you find the right one for your project.

Which Wire Wheel Brush do I Need?

Knotted Wheel Wire

Knotted wires use twists of metal wire, or knots to operate. This brush supports aggressive cutting and absorbs vibrations and bending that might lower the wire's quality.

Standard brushes are twisted to about two-thirds of the device's filament length. The other third is slightly flared. With larger applications and sizes that need a tougher brushing action, the knots can twist for the entire length.


Knotted wires are known for their versatility. They are also known as cable twists and is used in oil pipelines and oil fields. With knotted wires, you can use your grinder to complete the hardest cutting tasks with ease.

Crimped Wire

Crimped wire brushes consist of stainless steel, carbon steel, or brass filaments that look pinched, wavy, or bent. When grinding metals normally, small wire pieces break off and leave cutting edges open. Crimps solve this problem by creating cleaner breaks. They support uniform brushing because of the tool's filament tips helps its cutting action.

Most crimped wire brushes have a 2" arbor hole that works with shafts ranging from ½" to 1". These brushes are available in various sizes, but the most common diameters are 6" to 8". Get a crimped wire if you're a novice user who wants clean cuts when completing your daily grinding tasks.

Additional Brushes

There are a lot of extra wheels that your angle grinder can use. Here is a table of additional grinders and their recommended uses.

Wheel Types

Recommended Usage


Buffing & Polishing

Aluminum Oxide



Removing tile, stone, and concrete


Removing rods, bars, and bolts


Eliminating burrs and rust from metal


Sharpens tools


Sharpening, surface prepping, sanding

Tuck pointing

Removing extra mortar

Silicone Carbide

Rounding, cleaning, and sharpening metal

Wire or Brush

Removing paint and rust; cleaning metal

Angle Grinder Considerations

Speed Ratings

The speed rating of your grinder is directly correlated to the RPM of your motor. A good grinder has an RPM of 5,000 to 11,000. While this means your tool is efficient at grinding and cutting at high speeds, you still need to remain careful.


You want an angle grinder that's ergonomic and easy to use. Having a grinder that doesn't fit well with your hands will increase your exposure to injury. Unless you have a large job that requires a very high-speed angle grinder, a smaller angle grinder model is preferable.


Look for an angle grinder with an anti-vibration handle. This keeps the machine steady and in place while you're working. Do this to make your projects safer and easier to complete.

Closing Thoughts

We believe that that the Dewalt DWE402K is the best angle grinder in its lineup. It has enough motor speed and safety features to fully maximize your performance. If you want to get the best cuts and a grinder at a modest price, you should look at this product.

Do you have any experience using this device?

Share a comment below and let us know what you think.

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Jonathan Maxwell

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