DEWALT DWE4120N No-Lock Paddle Switch Angle Grinder 4-1/2 Inch
- Wattage: 1140 watts
- Maximum Rotational Speed: 12000 rpm
- Power Source: Corded Electric
- Material Type: Blend
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A corded DEWALT angle grinder with a high RPM motor and a strong review record, built for sustained grinding and cutting work.
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ASIN: B00E3AOBMQModel: DWE4120NCategory: Power Grinders
Overview
The DEWALT DWE4120N is a corded electric angle grinder running on 120 volts, with a 1140 watt motor spinning up to 12000 RPM. It weighs 5 pounds bare.
A 1140 watt motor and 12000 RPM no load speed put this in the small angle grinder class, the kind used for cutting, grinding, and surface prep with 4 to 5 inch discs. Being corded means constant power without battery runtime limits, at the cost of needing an outlet nearby. At 5 pounds, it is light enough for one handed overhead or awkward angle work.
- 12000 RPM no-load speed
- 1140 watt motor, 120V corded
Who it's for
Metalworkers, welders, and DIYers doing grinding, cutting, or deburring who want continuous power without battery swaps. Less suited to cordless only job sites or anyone prioritizing portability over runtime.
Pros and cons
- High 12000 RPM motor speed
- Consistent corded power, no battery runtime limit
- Light at 5 pounds bare
- Requires an outlet or extension cord
- Not usable on cordless-only job sites
Performance notes
The 1140 watt motor driving 12000 RPM gives this grinder enough speed to move through cutting and grinding discs efficiently, which is the main driver of how fast it clears material. Running on a 120 volt cord means output does not fade as a battery drains, a real advantage during long grinding sessions. At 5 pounds bare, fatigue during overhead or extended use should be lower than with heavier grinders.
Specifications
| Brand | DeWalt |
|---|---|
| Model | DWE4120N |
| Dimensions & fit | |
| Item Weight | 5 poundshigher than 71% of 107 power grinders |
| Item Dimensions L X W X H | 15.7 × 5.9 × 4.7 inches |
| Capacity & performance | |
| Maximum Rotational Speed | 12000 rpmhigher than 57% of 122 power grinders |
| Power & efficiency | |
| Wattage | 1140 wattshigher than 78% of 55 power grinders |
| Power Source | Corded Electric |
| Voltage | 120 voltshigher than 52% of 103 power grinders |
| Horsepower | 0.002 hp |
| Construction & materials | |
| Material Type | Blend |
| Color | Multi |
| Included components | |
| Unit Count | 1 |
| Included Components | One-Touch Guard / Wrench |
| Warranty & support | |
| Manufacturer Warranty Description | 3 year limited manufacturer warranty |
| Other details | |
| Style Name | Classic |
| Item Type Name | 4.5IN SMALL ANGLE GRINDER PADDLE NO LOCK |
Closest rivals on specs
DongCheng DSM17-115P Paddle Switch Angle Grinder 4-1/2 Inch- Item Weight 5 vs 4.2 pounds (+19%)
Frequently asked questions
Is the DWE4120N corded or cordless?
It is corded electric, running on 120 volts.
How fast does the DWE4120N spin?
It has a no load speed of 12000 RPM.
How much does the DWE4120N weigh?
5 pounds as a bare tool, per the listing.