April 6, 2021

Dewalt 6423 VS 6423k | Which Random Orbital Sander Is Better?

When deciding between the Dewalt 6423 vs 6423k random orbital sanders, you should know the similarities and the differences that set them apart. Since they are made by the same manufacturer (Dewalt), they are bound to be similar. The introduction of the Dewalt 6423k has some improvements and changes. These changes are noticeable in the speed variations, disc size, dust collection system, power options, weight and durability. They will lead you to your best choice when you match the features with your preferences. Below is an overview of the sanders, their advantages and disadvantages.

Overview of the Dewalt 6423

The Dewalt 6423 orbital sander is a 5inch variable speed random orbit sander. It has a 3 amp motor produces 8,000 to 12,000 Orbits per minute. The speed variance allows you to control the speed depending on the type of material you are working on. The separate counterweight makes the machine withstand the vibration. 

You do not feel the vibration in your arms. That gives you a comfortable experience without being irritated. In that case, the rubber grip makes handling the machine comfortable. The low-profile design allows the user to get closer to the sanding machine. That feels comfortable even if you are short or tall. Trying to reach out to a tall machine is straining. Hence you will not be comfortable. The dust bag allows you to use one hand. 

It is easy to remove and clean. That allows your environment to stay dust-free. The sander is ideal for woodwork. It is a good sander for the money. The machine has an orbit diameter of 3/32inches. The dust port is a bit difficult to connect to the hole. Using a Dewalt vacuum system makes it better. However, connecting it to a rubber tubing as you connect it to the vacuum improves the system. The sander runs smoothly, with minimum vibration, giving you a professional and flawless finish. 


  • Speed variance
  • Works great on both rough and finish work
  • Sanding pads are easy to replace
  • Minimal vibration
  • An improved dust collection system


  • The dust port is hard to connect to the hole
  • It vibrates a bit

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Key Features of the Dewalt 6423 sander

Amp motor

The 3amp motor has the power to spin the pad at 8,000 up to 12,000 OPM. That allows it to work on materials faster. You are quick to finish your workload. That makes the machine ideal for industrial tasks. 

Dust collection system

The machine has a locking dust bag that connects to the sander. The dust bag is easy to handle as you can secure it using one hand. The dust bag is connected directly to the DWV010 or DWV012. These are Universal Quick Connectors. The machine lasts long due to the improved dust-sealed switch that protects the machine from ingesting dust. The dust port is compatible with vacuum systems that have 1-1/4inch hoses.

Hook and loop pad

 The hook and loop pad help you change sanding sheets. The hook and loop are 5 inches in size. The tool is 5.5inches long, and the machine weighs up to 2.9 lbs. The package includes a variable-speed random orbit sander and a dust bag. 

Rotations per minute

The Dewalt 6423 produces 8,000 to 12,000 OPM. That is faster on multiple materials. It works on rough and finishing surfaces. As a user, you have control over the sander machine. The orbits per minute with the Dewalt 6423 make it aggressive. Lower speeds are ideal for soft and thin materials, whereas higher speeds are ideal for long and thicker materials. 

Disc size

The standard disc for the orbital sander is 5inches in diameter. These are sandpaper discs. You can find them in hardware shops or online. When you are working on large projects, bigger sizes will do. 

Overview of the DWE 6423k

The DWE6423k has a 3 amp motor that spins from 8,000 to 12,000 OPM. The height draws you closer to the machine no matter how tall or short you are. That will relieve you from the strain of reaching out to machines. The counterweight design is noticeable at the top of the works as a shock absorber. 

You do not feel vibrations, which improves the machine’s comfortability. The rubber over-mold takes care of challenging areas of the machine. The dust collection system keeps you safe from sawdust and makes your tool last longer. It comes with a dust bag handled using one hand. The bag does not require you to empty it in a short period. The dust port fits directly into the DWV010 or the DWV012 dust collectors. The sander weighs up to 4 pounds. 

The package includes the sander, dust bag, owner’s card, and a carrying bag. It is ideal for DIY enthusiasts since it is easy to use and connects to the vacuum. The sander is smooth and easy to maneuver. It is not difficult to use on tricky parts of an item. You must ensure that you have lined up the holes at the bottom perfectly so that changing the sanding pads will not be difficult. 


  • Smooth
  • Fast
  • Low vibration
  • Light and ergonomic
  • High quality


  • An adaptor for the shop vac is required
  • The dust bag could be bigger

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Key features of the DWE 6423k

Dust collection system

The improved dust-sealed switch protects you from dust ingestion, making your machine more durable. The dust collection system keeps your workshop dust-free. The dust bag is a one-handed locking bag that is easy to use. The dust port fits perfectly into the DWV0110 or DWV012. You can add an adapter if you wish to use a shop vac. You can have your machine connected to a universal Quick Connector DWV9000. 

Safety features

Safety features are there to ensure that you have a safe workplace. Rubberized handles prevent your hands from slipping. It protects your tool from damage on hard surfaces, and the ergonomic design protects you from electrical shock. The dust-sealed switch makes you safe from just dust saw. The vacuum locking system allows you to have a secure dust bag attachment.  

RPM Speed

The machine operates within a range of 8,000 and 12,000 OPM. That makes it faster and gives a smooth finish. The variable speed control system makes it accurate. The polishing process is made smooth. 


The handle makes the tool handy when operating. The Dewalt sander has a large palm grip just above the sander. The handles are rubberized, and that is very comfortable to hold. The handles give better sanding in tricky areas. Your hands are safe on harsh surfaces. 

Powerful motor

The 3 amp motor produces spins between 8,000 and 12,000 OPM. The orbit is electric-powered, and it makes vibrations. However, you do not feel the vibrations due to the counterweight design that absorbs the vibrations. The motor has an air vent for high air circulation that controls overheating. The cooling system is effective.


  • Both sanders have 3 amp motors that produce 8,000 to 12,000 orbits per minute.
  • They have minimal vibrations when in use.
  • They both have rubberized grips.
  • They both come with one-handed dust bags.
  • Both sanders use DWV010 or the DWV012 dust collectors.


  • The Dewalt 6423k weighs 4 pounds, whereas the DWE 6423 weighs 3.52pounds. That makes the dewalt 6423 sander lighter than the DWE 6423k.
  • The package of the 6423k includes the sander, dust bag, owner’s card, and a carrying bag, whereas the Dewalt DWE 6423 has the sander and a dust bag.


These orbital sanders have the same price range. They are both affordable.


The difference between the two sanders lies in the weight and items included inside the packages. You compare the two products as you choose your top pick. The DWE 6423 model is lighter than the DWE 6423k model. However, the Dewalt DWE 6423k has more items inside the package than the Dewalt DWE 6423, which only has the sander and the dust bag. It is now a matter of what you want. 

David D. Hughes

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