Milwaukee 2984-20 Grinder Review
Our verdict
The Milwaukee 2984-20 is a premium 18-volt cordless die grinder with a 671-watt motor and 20,000 RPM free speed at $247.50. A 4.6-star average from 182 verified owners confirms it delivers professional-grade cordless performance for tradespeople who demand reliability over budget savings.
Check price on AmazonBest for
Professional mechanics, fabricators, and trades workers already on the Milwaukee M18 battery platform who need a high-power cordless die grinder.
Skip if
You are on a tight budget, do not own Milwaukee M18 batteries, or mainly need a die grinder for light occasional use.
- Power Source electric, gas, Battery Powered
- Voltage 18 Volts
- Speed 20000 RPM
- Motor 671 watts
- Priced 190% above the category median ($85.49 across 39 tracked models)
Our scorecard
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Owner rating4.6/5
4.6 average across 182 owner ratings
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Popularity2.2/5
182 owner reviews, fewer than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other power tools and workshop machinery we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
The Milwaukee 2984-20 brings a 671-watt motor to the 18-volt cordless die grinder segment, matching many corded tools on raw power output while eliminating the cord. At 20,000 RPM it handles demanding tasks including porting, weld blending, surface prep, and precision grinding on the job site without needing a compressor or power outlet.
At $247.50, this is the highest-priced tool in this category lineup and is clearly aimed at professionals rather than occasional DIY users. The M18 platform means existing Milwaukee tradespeople can share batteries across their tool fleet, reducing the effective per-tool battery cost. However, new buyers must factor in battery and charger costs on top of the bare-tool price.
With 182 reviews at 4.6 stars and 100 units sold last month, the Milwaukee 2984-20 has a validated owner base. The listing notes electric, gas, and battery power sources which may reflect catalogue metadata rather than actual operation modes. Buyers should confirm it operates on battery only.
Pros
- 671-watt motor delivers corded-level power in a cordless package
- 18V M18 platform integrates with the largest professional cordless tool ecosystem in North America
- 20,000 RPM covers heavy-duty grinding, porting, and weld finishing
- 4.6 stars from 182 verified owners reflects high professional satisfaction
- Cordless freedom removes compressor and cord management from the workflow
Cons
- At $247.50 it is the most expensive option in this category tier
- Battery and charger sold separately, pushing total cost higher for new platform buyers
- Power source listing includes conflicting entries requiring seller confirmation
Specifications
| Power Source | electric, gas, Battery Powered |
|---|---|
| Voltage | 18 Volts |
| Speed | 20000 RPM |
| Motor | 671 watts |
Performance notes
Battery-powered at 18 volts with a 671-watt motor output and 20,000 RPM free speed. Tool weight is not published in the listing. The Milwaukee M18 platform is widely compatible across the brand's professional tool range. Battery runtime will depend on workload and the capacity of the battery used.
What buyers say
Owners rate the Milwaukee 2984-20 at 4.6 stars across 182 reviews. Professional users of Milwaukee tools consistently report high confidence in build quality and battery platform integration. At this price, buyers expect and generally find professional durability and motor consistency that budget alternatives cannot match.
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Frequently asked questions
Does the Milwaukee 2984-20 come with a battery and charger?
The 2984-20 designation indicates a bare tool. You will need a compatible M18 battery and charger sold separately, or purchase a kit version if available.
What collet size does the Milwaukee 2984-20 accept?
The listing does not publish the collet size. Contact Milwaukee or the seller to confirm before purchasing bits or rotary accessories.
Is the premium price over budget options worth it for professional use?
Based on owner feedback at 4.6 stars and the 671-watt motor, the Milwaukee 2984-20 offers professional-level power and M18 platform integration that budget air tools cannot replicate. For daily professional use the investment is well-supported by the data.