Makita GA7021 Grinder
- Grinder
- 1800 watts
- Corded electric
- 15.4 pounds
- Better rated than 85%
- More reviewed than 75%
The GA7021 delivers what a 7 inch corded grinder is meant for: continuous power on heavy grinding and cutting work.
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How it ranks among the 150 grinders we track
4.8★ across 656 Amazon ratings, Bayesian-smoothed toward the category average.
656 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: 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
Makita's GA7021 pairs a 7 inch wheel with an 1800 watt corded motor and a 6000 RPM no-load speed, weighing 15.4 pounds. It is built for continuous grinding, cutting, and surface work rather than light occasional use.
7 inch grinders sit at the larger end of the angle grinder range, used for cutting rebar, grinding welds, and surface prep on masonry or metal where a smaller 4.5 inch grinder would be underpowered. The 1800 watt motor and 6000 RPM speed are matched to that size wheel, and the corded design trades battery limits for continuous run time on longer jobs.
- 7 inch wheel capacity
- 1800 watt corded motor
- 6000 RPM no-load speed
- 15.4 pound weight
Who it's for
Tradespeople and serious DIY users doing heavy metal or masonry work such as cutting rebar, grinding welds, or surface prep, where a 7 inch wheel and sustained corded power are needed.
Strengths and trade-offs
Drawn from this product's published specifications.
- 1800 watt motor for sustained heavy-duty grinding
- 7 inch wheel capacity for larger jobs
- Corded power avoids battery runtime limits
- 15.4 pounds is heavy for overhead or one-handed use
- Corded design limits mobility compared to battery grinders
- No stated dust or kickback protection features
Performance notes
The 1800 watt motor pairs with a 6000 RPM no-load speed to keep torque up under load on a 7 inch wheel, which is the size point where corded power matters most since battery tools struggle to sustain that combination. At 15.4 pounds it is heavier than compact grinders, so extended overhead use will tire the arms faster.
Specifications
| Brand | MAKITA |
|---|---|
| Model | GA7021 |
| Dimensions & fit | |
| Item Weight | 15.4 pounds |
| Dimensions | 21.2 × 9.2 × 7 inches |
| Capacity & performance | |
| Speed | 6000 rpm |
| Power & efficiency | |
| Motor Power | 1800 watts |
| Power Source | Corded electric |
| Voltage | 120 volts |
Other MAKITA grinders
How it compares
This product against the closest alternatives we track in grinders.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Makita GA7021 GrinderThis product | 4.8 / 5 | 656 | 4.2 / 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 |
| CRAFTSMAN CMCG400B GrinderCraftsman | 4.7 / 5 | 2,900 | 4.4 / 5 |
Similar grinders from other brands
Questions about the MAKITA GA7021
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What size wheel does the Makita GA7021 use?
7 inches.
Is the Makita GA7021 corded or cordless?
Corded electric, running on 120 volts.
How much does the Makita GA7021 weigh?
15.4 pounds.