The DeWalt DWE6423K (variable speed) and DWE6421 (single speed) Random Orbit Sanders give you a couple solid options for woodworking and carpentry projects. The single-speed shaves some cost off the variable speed model. Aside from that difference, both models share nearly all remaining features and specs.
Both DeWalt 5-inch corded orbital sanders weigh 2.9 pounds and take a 5-inch hook and loop sanding pad. As part of DeWalt’s Perform and Protect line of power tools, both sanders reduce vibration to the user. They accomplish this through an internal counterweight system.
Ergonomics and Dust Collection
These two corded DeWalt Random Orbit Sanders stand a squat 5-1/2 inches (140 mm) tall. This gives users the advantage of getting closer to the sanding surface. A rubber overmold, rubber dust skirt, and dust bag with a one-hand locking system round out the features. DeWalt’s Universal Connector System lets you attach to your dust extractor, reducing the amount of airborne dust.
The DeWalt DWE6421 5-inch Single Speed Random Orbit Sander features a 3.0 amp motor that spins the pad at 12,000 OPM on a 3/32” orbit diameter. The variable speed DeWalt DWE6423K delivers between 8,000 and 12,000 OPM. Either way, this makes the random orbit sander suitable for a variety of sanding applications. This sander works on many surfaces including wood, metal, and fiberglass.
The 5-inch Single Speed Random Orbit Sander (DWE6421) retails for around $75. Bumping up to variable speed tacks on a ~$25 premium (plan to spend just under $100). Both come with a 3-year limited warranty, 90-day money-back guarantee, and 1-year free service contract.
DeWalt Random Orbit Sander Specifications
- Model: DWE6421 (single speed), DWE6423K (variable speed)
- Motor: 3.0 amp AC
- Pad Size: 5″ hook and loop
- Speed: 12,000 OPM (6421), 8,000 – 12,000 OPM (6423)
- Orbit Diameter: 3/32 inch
- Weight: 2.9 pounds
- Height: 5-1/2 inches
- Perform & Protect Technology: vibration reduction via counterweight
- Price: $75 (6421K), $98 (6423K)
- Warranty: 3 years
