Milwaukee 2880-20 Grinder
- Grinder
- 800 watts
- Battery
- 4.99 pounds
- Better rated than 85%
- More reviewed than 91%
An 800 watt cordless angle grinder on the M18 platform running up to 8500 RPM, a strong add on for existing Milwaukee battery owners doing metal work.
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How it ranks among the 150 grinders we track
4.8★ across 2,400 Amazon ratings, Bayesian-smoothed toward the category average.
2,400 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
1,000+ bought on Amazon 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: high - strong rating volume and complete data.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
The Milwaukee 2880-20 is an 18 volt cordless angle grinder rated to 8500 RPM with an 800 watt motor, weighing about 5 pounds and measuring 13 by 8.5 by 3.5 inches. Like other 2880-20 model numbers, it ships as a bare tool without battery or charger.
This grinder's 8500 RPM speed and 800 watt motor rating put it in line with corded angle grinders used for cutting and grinding metal, while running on Milwaukee's M18 battery platform for cordless use. The bare tool listing again suits existing M18 owners rather than a first time buyer. Dimensions here likely describe the tool itself rather than any packaging, given they are given in inches with length, width and height labels.
- 8500 RPM top speed
- 800 watt motor power
- 18 volt M18 platform
- 13 x 8.5 x 3.5 inch dimensions
Who it's for
Suits Milwaukee M18 owners doing metal grinding, cutting or surface prep who want cordless freedom over a corded grinder. Less suited to someone without existing M18 batteries, since none are included.
Strengths and trade-offs
Drawn from this product's published specifications.
- 800 watt motor with up to 8500 RPM
- Cordless freedom on the M18 platform
- Compact 13 by 8.5 by 3.5 inch size
- Bare tool, no battery or charger included
- About 5 pounds, adding a battery increases handheld weight
- No reviews yet to confirm wheel guard or disc size specifics
Performance notes
An 800 watt motor at up to 8500 RPM gives this grinder enough speed for cutting, grinding and surface prep on metal, comparable to many corded grinders in the same class. Cordless operation depends on the M18 battery paired with it, so higher capacity batteries will extend runtime on heavier jobs.
Specifications
| Brand | MILWAUKEE |
|---|---|
| Model | 2880-20 |
| Dimensions & fit | |
| Item Weight | 4.99 pounds |
| Dimensions | 13 × 8.5 × 3.5 inches |
| Capacity & performance | |
| Speed | 8500 rpm |
| Power & efficiency | |
| Motor Power | 800 watts |
| Power Source | Battery |
| Voltage | 18 volts |
Other MILWAUKEE grinders
How it compares
This product against the closest alternatives we track in grinders.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Milwaukee 2880-20 GrinderThis product | 4.8 / 5 | 2,400 | 4.5 / 5 |
| DEWALT DCG413B GrinderDeWalt | 4.8 / 5 | 9,600 | 4.6 / 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 |
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Questions about the MILWAUKEE 2880-20
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What is the top speed of the Milwaukee 2880-20 grinder?
8500 RPM.
Does the 2880-20 include a battery?
No, it is a bare tool on the M18 platform, sold without battery or charger.
How much does this grinder weigh?
About 5 pounds (79.82 ounces).