Makita GA4530 (6 Amp 4-1/2 in. Slim Corded Angle Grinder)
By Makita · Angle Grinders · Power Tools
- Wheel 4-1/2 in
- Motor 6 A, 720 W, 120 V
- Speed 11,000 RPM
Lowest price seen
~$89.00 (approx.)
from $89.00 at Amazon
- Amazon ~$89.00 (approx.)View at Amazon
- MakitaView at Makita
- eBay (used) eBay: used, open-box, refurbishedView at eBay (used)
- eBayView at eBay
- Tool NutView at Tool Nut
Prices are snapshots. Check the current price with the store.
Summary
A compact 4-1/2-inch corded angle grinder for fabrication, welding, masonry and light cutting, with a 6 A / 720 W motor at 11,000 RPM. Check the model suffix: the GA4530R is a 240 V successor, not the same tool.
Strengths
- At 3.1 lb with a 2-1/4 in. barrel grip, it stays manageable in overhead and extended use.
- Externally accessible brushes make the most common wear item an easy swap.
- Labyrinth dust sealing and machined bevel gears aim the tool at dusty shops.
- It runs on standard US 120 V, so it plugs into any site outlet.
- A proven design that has been on the market for many years.
- The lock-on slide switch helps with long, continuous passes.
Weaknesses
- No overload protection, so excessive pressure can damage the motor.
- No soft start, anti-restart or electronic speed control; the successor GA4530R has all three.
- The lock-on switch can catch out anyone new to grinders; accidental activation is possible.
- The 1-year warranty is standard for the class, not exceptional.
- Nobody has published measured vibration, noise or thermal data for this model.
- Owner feedback is thin, so long-term reliability rests on its track record rather than test data.
Verified specifications
| Wheel size | 4-1/2 in. (115 mm). |
|---|---|
| Motor | 6 A, 720 W input. |
| No-load speed | 11,000 RPM. |
| Spindle thread | 5/8"-11 UNC, the US standard for 4-1/2 in. grinders. |
| Overall length | 10-1/2 in. (266 mm). |
| Net weight | 3.1 lb (1.4 kg). |
| Barrel grip diameter | 2-1/4 in. |
| Bore diameter | 22.23 mm. |
| Switch | lock-on slide switch. |
| Brush access | externally accessible. |
| Dust protection | labyrinth construction with zig-zag varnish on the motor. |
| Gears | machined bevel gears. |
| Gear housing | metal, rotatable in 90° increments. |
| Bearings | all ball bearing design. |
| Electrical | US 120 V. |
| Dimensions | 266 mm L × 128 mm W × 103 mm H. |
| In the box | 4-1/2 in. grinding wheel, wheel guard, lock nut, lock nut wrench, side handle, inner flange. |
| Warranty | 1 year from original purchase. |
Full research notes and sources
Which model this is
This page covers the GA4530, the long-running US 120 V model. It is not the GA4530R, the 240 V successor sold mainly in 240 V markets, which adds soft-start and anti-restart. Some listings blur the two.
The Amazon listing for this tool is ASIN B001TWVESA.
Service and upkeep
The externally accessible brushes are the practical highlight: the one wear item you can expect to replace is reachable without stripping the tool down. Makita seals the motor and bearings with labyrinth construction and coats the windings with a zig-zag varnish pattern. The machined bevel gears are claimed to last up to 2x longer than competing models, a manufacturer figure rather than a measured one. The metal gear housing rotates in 90° increments to suit different working positions. Warranty cover is 1 year from original purchase, standard for this class.
What the data does not tell you
No established tool outlet has published an instrumented test of the exact GA4530, so there are no measured vibration, noise or thermal numbers to quote. Owner discussion was sparse during research, so there is no population failure rate or common-failure list to lean on. Treat the durability claims as the maker’s own. What the record does support is that this is a long-established design that has spent years in fabrication shops, welding bays and maintenance crews.
Is it worth it?
At roughly $90-100 it is fair value: a proven, lightweight grinder from a major manufacturer. Above $100, compare it against newer models with soft-start, anti-restart and electronic speed control. StoneTooling listed the GA4530 at $93.75 for the GA4530X kit. ACME Tools listed the GA4530 with a 1-year warranty and a 30-day satisfaction guarantee; a specific price was not captured.
If you grind overhead or all day, the slim grip and low weight earn their keep. If you want electronic safety and comfort features, look at the GA4530R or competing grinders that carry them. Check the suffix on the box before you buy.
Sources
Manufacturer:
- Makita USA product page
- Makita spec sheet for 4 in. and 4-1/2 in. angle grinders (PDF)
- Makita GA4530 instruction manual (en-manuals)
- Makita GA4030/GA4530/GA5030 instruction manual (CARiD PDF)
Independent reviews:
Parts and stores: