Makita Compact Angle Grinder GA4030K 4 Inch 6 Amp Portable (11000 RPM Tool Case Lightweight Steel Shaping Fabrication Metal Cutting Disc Unit)
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Makita GA4030K 4" 6-Amp Compact Angle Grinder Kit with Tool Case
The Makita GA4030K 4-inch 6-amp compact angle grinder kit cuts steel stock, grinds masonry, removes rust, and shapes metal welds across professional construction and automotive repair jobsites. Powered by a Makita-built 6.0-amp motor delivering 11,000 no-load RPM, this lightweight 3.7-pound grinder integrates labyrinth construction seals and a protective zig-zag varnish armature coating to block abrasive dust and debris from internal bearings. Outfitted with a slim 2-1/4 inch barrel grip for all-day operator comfort, machined bevel gears, and a protective storage tool case, it equips professional metalworkers and contractors with durable, high-speed cutting and grinding performance.
Best Used For:
- Ferrous Metal Cutting and Fabrication: Slicing through rebar, steel pipe, and sheet metal stock cleanly with the included 24-grit grinding wheel.
- Weld Slag Removal and Surface Prep: Stripping rust, old paint, and rough weld beads from steel assemblies prior to painting or finishing.
- Masonry and Stone Surface Trimming: Cutting concrete blocks, brick pavers, and limestone accurately in tight workspace environments.
Key Performance & Safety Features
- Powerful 6.0-Amp Motor: Delivers 11,000 RPM high-speed rotational output to handle rigorous grinding, cutting, and stock removal tasks.
- Slim 2-1/4 Inch Barrel Grip: Ergonomically optimized small-diameter barrel handle provides maximum hand control and reduces operator fatigue during extended shifts.
- Labyrinth Dust Construction: Advanced labyrinth sealing channels protect motor windings and ball bearings from destructive abrasive debris.
- Zig-Zag Armature Varnish: Protective varnish barrier seals the rotating armature coils against dust contamination to maximize motor service life.
- Machined Spiral Bevel Gears: Precision gear engineering delivers smoother power rotation and up to 2X longer service durability than previous generations.
What's Included
- (1) Makita GA4030K 4" Angle Grinder Body
- (1) 4" x 3/16" x 5/8" Grinding Wheel (24 Grit)
- (1) 4" Protective Wheel Guard
- (1) Inner Flange
- (1) Lock Nut
- (1) Lock Nut Spanner Wrench
- (1) Side Handle
- (1) Heavy-Duty Storage Tool Case
Technical Specifications
| Manufacturer | Makita U.S.A. Inc. |
| Model Number | GA4030K |
| Product Classification | 4" Compact Angle Grinder Kit with Case |
| Grinding Wheel Diameter Size | 4.00 inches (101.6 mm Wheel Capacity) |
| Motor Amperage Rating | 6.0 Amps High-Performance Motor |
| Electrical Input Voltage | 120V AC Standard Household Power |
| No-Load Rotational Speed | 11,000 RPM Maximum Velocity |
| Spindle Thread Size Type | M10 x 1.25 Standard Spindle Thread |
| Switch Control Mechanism | Body Grip Slide Switch with Lock-On |
| Overall Tool Length | 10.50 inches (10-1/2 in / 26.67 cm) |
| Net Grinder Body Weight | 3.70 lbs (1.68 kg Lightweight Frame) |
| Total Packaged Weight | 9.55 lbs (4.33 kg Kit with Case) |
| Target Substrates | Ferrous Metal, Steel Welds, Rebar, Brick, & Masonry |
Pro-Tip: When grinding steel welds or cutting rebar with a 4-inch grinder, maintain a 15-to-30-degree angle between the wheel face and the workpiece; this allows the 24-grit abrasive to shed material efficiently without overloading the 6-amp motor.