Milwaukee 2984-20 Grinder
- Grinder
- 671 watts
- 18 volts
- 20000 rpm
A high output 18 volt cordless angle grinder from Milwaukee, best suited to tradespeople already on the M18 battery platform.
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How it ranks among the 150 grinders we track
4.6★ across 182 Amazon ratings, Bayesian-smoothed toward the category average.
182 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
100+ 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: 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 2984-20 is Milwaukee's 18 volt cordless angle grinder, spinning up to 20,000 RPM with a 671 watt motor. It targets tradespeople who want cutting and grinding power without a cord or a separate compressor.
A 671 watt motor output at 20,000 RPM puts this toward the higher end of cordless angle grinders, closer to what corded grinders deliver, which matters most for cutting metal or grinding welds rather than light deburring. Running on Milwaukee's 18 volt battery platform means it shares batteries with the rest of a Milwaukee cordless lineup, cutting down on the number of chargers a tradesperson needs to carry.
- 18 volt Milwaukee battery platform
- 20,000 RPM speed
- 671 watt motor
Who it's for
Fits tradespeople already invested in Milwaukee's 18 volt battery platform who need grinding or cutting power on job sites without a power outlet nearby. Less suited to occasional home users who do not already own Milwaukee batteries, since the tool ships bare in this configuration.
Strengths and trade-offs
Drawn from this product's published specifications.
- 671 watt motor output
- 20,000 RPM no-load speed
- Cordless on the Milwaukee 18 volt platform
- Ships as a bare tool, the 20 suffix typically means no battery or charger included
- Runtime depends on battery pack, which is not specified here
Performance notes
Motor output of 671 watts driving a 20,000 RPM no-load speed gives this grinder enough headroom for cutting metal and grinding welds, not just light surface work. Being battery powered removes the cord but ties runtime to whatever battery pack is paired with it, which this listing does not specify.
Specifications
| Brand | MILWAUKEE |
|---|---|
| Model | 2984-20 |
| Motor Power | 671 watts |
| Power Source | Corded electric, Gas, Battery |
| Voltage | 18 volts |
| Speed | 20000 rpm |
Other MILWAUKEE grinders
How it compares
This product against the closest alternatives we track in grinders.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Milwaukee 2984-20 GrinderThis product | 4.6 / 5 | 182 | 4.0 / 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 2984-20
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Does the Milwaukee 2984-20 include a battery?
Milwaukee's 20 suffix typically denotes a bare tool sold without battery or charger, though buyers should confirm on the current listing.
How fast does the 2984-20 spin?
Up to 20,000 RPM.
What battery platform does the 2984-20 use?
Milwaukee's 18 volt (M18) platform.