Makita Die Grinder GD0800C 1/4 Inch SJS Variable Speed Tool (6.6 AMP 28000 RPM Electronic Regulation Metal Porting Weld Deburring Fabrication)

Makita GD0800C 6.6-Amp 1/4" SJS™ Variable Speed Professional Die Grinder The Makita GD0800C 6.6-amp SJS™ variable speed die grinder grinds, deburrs, ports, and finishes structural metal castings and weld seams across a speed range from 7,000 to 28,000 RPM. Engineered with Makita’s proprietary Super Joint System (SJS™)—a mechanical slip-clutch mechanism protecting gears and armature shafts if the grinding point binds—this high-performance corded tool incorporates electronic speed control to maintain constant RPM under load and soft start technology for smooth start-ups. Outfitted with an electronic current limiter for overload protection, slim double-neck design, included side handle, labyrinth dust channels, protective zig-zag armature varnish, and a lock-on slide switch, it equips metal fabricators, automotive technicians, and industrial welders with high-torque grinding endurance and precision speed regulation. Best Used For: Heavy Weld Seam Blending and Porting: Smoothing internal fillet welds, removing casting flash, and shaping custom intake manifolds or metal ports at high RPM. Industrial Metal Fabrication Deburring: Reaming out cut pipe interiors, cleaning up structural steel edges, and removing burrs from heavy plate steel assemblies. Precision Contoured Surface Finishing: Matching rotational speeds to specific abrasive mounted points and carbide burrs when working on stainless steel, aluminum, and cast iron. Key Performance & Safety Features Super Joint System (SJS™) Clutch: Mechanical slip-clutch mechanism protects internal gears and motor components by allowing the drive shaft to slip during sudden wheel binding. High-Speed 6.6-Amp Motor: Industrial motor delivers adjustable speeds from 7,000 to 28,000 RPM for rapid material removal across diverse applications. Constant Speed Electronic Control: Automatically applies additional power to the motor under load to maintain consistent operating RPM and cut quality. Soft Start Technology: Suppresses initial start-up reaction torque for smooth acceleration and extended gear lifespan. Electronic Overload Protection: Built-in current limiter prevents motor burnout under extreme sustained operating pressure. Labyrinth Dust & Debris Sealing: Internal labyrinth channels prohibit abrasive metal filings from penetrating motor bearings and armature windings. What's Included (1) 1/4" Collet Cone (192986-3) (1) Spanner Wrench (781203-2) (1) Wrench #19 (781206-6) (1) Side Handle Assembly (192985-5) Technical Specifications Manufacturer Brand Makita (Makita U.S.A., Inc.) Model Part Number GD0800C Collet Chuck Capacity 0.250 Inches (1/4 in. Precision Collet) Motor Electrical Rating 6.60 Amps (120V AC) Variable Speed Range 7,000 to 28,000 RPM (No-Load Variable Speed) Maximum Wheel Diameter 1.00 Inch (25.40 mm) Grinding Point Clutch & Bind-Up Protection SJS™ Mechanical Slip-Clutch System Electronic Performance Systems Constant Speed Control, Soft Start & Current Limiter Switch Configuration Slide Switch with Lock-On Functionality Motor Protection Architecture Labyrinth Dust Construction & Zig-Zag Varnish Overall Tool Length 14.625 Inches (371.48 mm) Net Tool Body Weight 3.70 lbs (59.20 oz / 1.68 kg) Power Source Type Corded Electric (Double-Insulated) Universal Product Code (UPC) 088381034579 Suitable for material type Structural Steel, Cast Iron, Aluminum, & Stainless Steel Pro-Tip: Adjust the variable speed dial down to lower RPM settings when working with larger carbide burrs or polishing stones to prevent excessive heat buildup and preserve abrasive cutting edges.