Astro 222 Grinder
- Grinder
- Pneumatic
- 1.87 pounds
Shops already running air tools get a light pneumatic grinder here, though it is not a standalone tool for anyone without a compressor.
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How it ranks among the 150 grinders we track
4.4★ across 129 Amazon ratings, Bayesian-smoothed toward the category average.
129 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
Running on shop air rather than a battery, Astro's model 222 grinder weighs 1.87 pounds. Pneumatic power puts it in garage and hobby shop territory rather than cordless convenience.
Pneumatic tools like this trade battery weight and charge time for a dependence on a shop compressor, worth noting if the buyer does not already have air line set up. At under 2 pounds it reads as a small die grinder rather than a heavy angle grinder.
- Model 222
- Pneumatic power source
- Weighs 1.87 pounds
- Astro brand
Who it's for
A garage or shop already running air tools is the natural home for this grinder, useful for detail work, deburring or small material removal. Without a compressor already in place, it is not a workable choice.
Strengths and trade-offs
Drawn from this product's published specifications.
- Light at 1.87 pounds for one hand control
- Pneumatic power avoids battery charging
- Astro is an established air tool brand
- Requires a shop compressor, not standalone
- No stated RPM or free speed
- No accessory or collet size listed
Performance notes
Pneumatic power delivers grinding speed as long as the compressor keeps pace with air demand, and the light 1.87 pound body favors control in tight spots over sustained heavy grinding. No stated RPM or free speed limits how precisely its output can be judged from the listing alone.
Specifications
| Brand | Astro |
|---|---|
| Model | 222 |
| Power Source | Pneumatic |
| Item Weight | 1.87 pounds |
Other Astro grinders
How it compares
This product against the closest alternatives we track in grinders.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Astro 222 GrinderThis product | 4.4 / 5 | 129 | 3.5 / 5 |
| DEWALT DCG413B GrinderDeWalt | 4.8 / 5 | 9,600 | 4.6 / 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 |
Similar grinders from other brands
Questions about the Astro 222
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Does the Astro 222 grinder need a compressor?
Yes, it is pneumatic and runs on shop air rather than a battery or cord.
How much does the Astro 222 weigh?
It weighs 1.87 pounds.
What is the Astro 222 grinder best suited for?
Its light weight and air power point to detail grinding and deburring rather than heavy material removal.