DEWALT DWE4120 Grinder
- Grinder
- 1000 watts
- Corded electric
- 5 pounds
- Better rated than 66%
A corded 1000 watt grinder from DEWALT running at 12,000 RPM, weighing 5 pounds, with no battery to charge or replace.
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How it ranks among the 150 grinders we track
4.7★ across 275 Amazon ratings, Bayesian-smoothed toward the category average.
275 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
Modest tracked demand last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 150 grinders we track - how the scorecard works · full grinders data report. Confidence: medium - useful but incomplete evidence.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
The DEWALT DWE4120 is a corded electric grinder running on 120 volts with a 1000 watt motor and a no-load speed of 12,000 RPM. At 5 pounds it sits in DEWALT's smaller grinder range, and it holds a 4.7 star rating from 275 reviews.
Corded power at 1000 watts paired with a 12,000 RPM top speed points to a grinder built for cutting, grinding and surface prep rather than a low-speed polishing tool. Corded operation means no battery to manage, at the cost of needing an outlet or extension cord on site.
- 120 volt corded electric power
- 12,000 RPM no-load speed
- 1000 watt motor
- 5 pound tool weight
Who it's for
Tradespeople and DIYers who want steady corded power for grinding, cutting or deburring metal and masonry, and who are not tied to a cordless battery platform.
Strengths and trade-offs
Drawn from this product's published specifications.
- Consistent corded power with no battery to charge
- 1000 watt motor
- 5 pound weight is manageable for one-handed use
- Requires an outlet or extension cord
- Disc size not specified in this listing
Performance notes
The 1000 watt motor at 12,000 RPM gives consistent output as long as the tool stays plugged in, since corded grinders do not lose speed as a battery drains the way cordless models can.
Specifications
| Brand | DeWalt |
|---|---|
| Model | DWE4120 |
| Motor Power | 1000 watts |
| Power Source | Corded electric |
| Item Weight | 5 pounds |
| Voltage | 120 volts |
| Speed | 12000 rpm |
Other DeWalt grinders
How it compares
This product against the closest alternatives we track in grinders.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| DEWALT DWE4120 GrinderThis product | 4.7 / 5 | 275 | 3.8 / 5 |
| Milwaukee 2880-20 GrinderMILWAUKEE | 4.8 / 5 | 2,400 | 4.5 / 5 |
| AVID MW590 GrinderAVID | 4.5 / 5 | 6,100 | 4.4 / 5 |
| Makita 9557PBX1 GrinderMAKITA | 4.8 / 5 | 3,960 | 4.4 / 5 |
| CRAFTSMAN CMCG400B GrinderCraftsman | 4.7 / 5 | 2,900 | 4.4 / 5 |
Similar grinders from other brands
Questions about the DeWalt DWE4120
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Is the DEWALT DWE4120 corded or cordless?
It is corded electric, running on 120 volts.
What is the top speed of the DWE4120?
It has a listed no-load speed of 12,000 RPM.
How much does the DWE4120 weigh?
5 pounds, according to the listing.