Ingersoll 3101G Grinder
- Grinder
- Pneumatic
- 1.3 pounds
- 9.5 × 6 × 2 inches
- More reviewed than 91%
For shop setups with compressed air already running, the 3101G offers a light, fast-spinning grinder suited to deburring and detail work.
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How it ranks among the 150 grinders we track
4.6★ across 2,583 Amazon ratings, Bayesian-smoothed toward the category average.
2,583 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
600+ 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
Compressed air, not a battery or cord, drives the Ingersoll 3101G to a 20,000 RPM free speed. It weighs roughly 590 grams and spans about 9.5 x 6 x 2 inches, backed by a 4.6 rating across 2,583 reviews.
Running on shop air rather than a battery, this grinder needs a compressor to operate, which suits garage and shop setups more than cordless portability. At about 1.3 pounds it's light enough for one-handed work on deburring or light grinding tasks.
- 20,000 RPM free speed
- Pneumatic, air powered
- About 1.3 pound weight
- 4.6 rating, 2,583+ reviews
Who it's for
Shop and garage users who already run a compressed air line will get the most from this grinder's light, fast-spinning design. Without a compressor on hand, it isn't really an option, since there's no cord or battery version.
Strengths and trade-offs
Drawn from this product's published specifications.
- Spins to 20,000 RPM
- Weighs about 1.3 pounds
- Compact footprint for tight spaces
- Requires a compressed air supply, not cordless
- No collet or accessory size listed
Performance notes
The pneumatic motor free-spins to 20,000 RPM, fast enough for removing burrs and light material shaping, though it needs steady air pressure to sustain that speed. Its roughly 1.3 pound weight and compact 9.5 x 6 x 2 inch footprint make it easier to control in tight spaces than a heavier corded grinder.
Specifications
| Brand | Ingersoll |
|---|---|
| Model | 3101G |
| Power Source | Pneumatic |
| Item Weight | 1.3 pounds |
| Dimensions | 9.5 × 6 × 2 inches |
| Speed | 20000 rpm |
Other Ingersoll grinders
How it compares
This product against the closest alternatives we track in grinders.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Ingersoll 3101G GrinderThis product | 4.6 / 5 | 2,583 | 4.4 / 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 Ingersoll 3101G
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Does the Ingersoll 3101G need a compressor?
Yes, it's pneumatic and runs on compressed air rather than a battery or cord.
How fast does the Ingersoll 3101G spin?
Up to 20,000 RPM, per the listing.
How much does the Ingersoll 3101G weigh?
About 590 grams, or roughly 1.3 pounds.