Makita GA5020 5-Inch Angle Grinder with Super Joint System

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Manufacturer Description

458-GA5020 This item features: -Powerful motor yet light weight for high production work with less fatigue. -Ball bearing construction for long tool life. -Removable side handle can be installed on either side of tool for operator comfort. -Spindle lock for easy accessory changes. -AC/DC for use with alternative power sources. -Lock-on button for continuous use operation. -Double insulated. -Electric brake for fast stopping of the grinding wheel. -Grinder head rotates 90 left or right for operator convenience. -Labyrinth construction seals motor and bearings from contamination. -Protective zig zag varnish seals armature for long tool life. -Extra large paddle switch. -Small circumference barrel grip. -Labyrinth construction seals motor and bearings. -Spiral gears for efficient power transmission. -All metal gear houseing for added protection. -Protective zig-zag varnish for advance motor protection. -Side mounted lock-on switch. -Super joint system helps prevent gear damage. -Gear housing can be rotated 90 . -Powerful motor with protective zig-zag varnish to keep dust and debris out. -SJS Technology prevents tool kickback caused by accidental wheel binding. -Gear housing rotates 90 . -Labyrinth construction seals the motor from dust and debris. -Powerful motor delivers more output for increased performance. -Soft Grip for more comfort and control. -Electric Brake provides higher work efficiency for the operator. -JS Technology prevents tool kickback caused by accidental wheel binding. -Wheel Diam: 5 in. -Voltage: 115.00 V. Model Code  Model Description AAVoltage Type:AC/DC, Amps:10.50 A, Speed:11000 rpm [Max], Spindle Thread:5/8 in - 11 UNC, Length:14 in, Control Type:Trigger, Applications:Cutting, Grinding, Stock Removal, Handle Type:Back Grip, Side Rod, Includes:Grinding Wheel (741407-8), Inner Flange (224399-1), Lock Nut (193465-4), Lock Nut Wrench (782424-9), Side Handle (153504-2), Tool-Less Guard (163474-7), Wt.:4.80 lb ABVoltage Type:AC/DC, Amps:

Makita's 5-Inch SJS Angle Grinder (model GA5020) combines 10.5 amp power with comfort and motor-protection features for longer-lasting industrial performance. The GA5020 is engineered with Makita's innovative Super Joint System (SJS) to protect the gears for longer tool life.

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GA5020 Features
POWER - 10.5 amp motor delivers 11,000 rpm

PERFORMANCE - Super Joint System (SJS) helps prevent gear damage

DURABILITY - Labyrinth construction, zig-zag varnish, and thicker coil wires for longer tool life

DESIGN - Electric brake; AC/DC switch

INCLUDES - Grinding wheel, wheel guard, side handle, inner flange, lock-nut, and wrench

Tool Specifications
Tool Spec
Grinding Wheel5"
Wire Cup Brush3-1/2"
Sanding Disc5"
No Load Speed11,000 rpm
Spindle Thread5/8"-11 UNC
Overall Length14"
Net Weight5.9 lbs.
10.5 AMP Motor Delivers 11,000 RPM
The GA5020 is powered by a 10.5 amp motor that delivers 11,000 rpm, with electric brake for maximum productivity. The labyrinth construction seals and protects the motor and bearings from dust and debris for longer tool life. In addition, the armature is sealed by a protective zig-zag varnish which prevents contamination by creating a barrier under rotation.

Super Joint System (SJS) Protects the Gears
The GA5020 is engineered with SJS, an innovation from Makita that protects the gears by automatically disengaging the gears from the motor should the grinding wheel accidentally catch or bind.

Comfort and Ergonomics
The GA5020 weighs just 5.9 pounds and is built with comfort and ergonomic features for extended use. The ergonomic rubberized handle with trigger switch provides easy operation, and the gear housing can be positioned every 90 degrees for operator convenience. In addition, the side handle can be easily installed on either side of the tool.

Versatile Design for a Range of Applications
The GA5020 is a versatile and powerful grinder engineered for demanding applications including cutting, ferrous metal, paint and rust removal, shipyard maintenance, heavy machinery, metal polishing, general steel grinding, auto repair work, cutting brick and masonry, and restoration work. The grinder is built for welders, fabricators, plumbers, masons, electricians, automotive technicians, stone and tile workers, HVAC, and general contractors seeking a best-in-class industrial quality angle grinder. The GA5020 is just another example of Makita's commitment to innovative technology and best-in-class engineering.

Makita SJS LogoAbout Makita's Super Joint System (SJS)
Super Joint System (SJS) is an innovation from Makita engineering where the motor armature and spiral bevel gear are linked by a coil spring. If the grinding wheel catches or binds, the coil spring relaxes and disengages the gears from the motor. As the grinding wheel stops, the gears and motor are protected. Makita's growing line of SJS-equipped grinders includes models ranging from a 1/4-inch die grinder to a 7-inch angle grinder.

Makita LogoAbout Makita
Makita is a worldwide manufacturer of industrial quality power tools and offers a wide range of industrial accessories. Makita applies leading-edge innovation to engineer power tools that are more compact and energy efficient, yet deliver industrial strength power and results. Makita U.S.A., Inc. is located in La Mirada, California, and operates an extensive distribution network located throughout the U.S. For more information, please call 800/4-MAKITA (800/462-5482) or visit Makita is Best in Class Engineering.

Every Makita tool is thoroughly inspected and tested before leaving the factory. If you are not satisfied with any Makita tool within 30 days of purchase, return it and Makita will provide a replacement or refund. Each Makita tool is warranted to be free of defects from workmanship and materials for the period of ONE YEAR from the date of original purchase. Should any trouble develop during this one-year period, return the COMPLETE tool, freight prepaid, to one of Makita's Factory or Authorized Service Centers. Please see for complete details.

What's in the Box
Makita GA5020 5-Inch SJS Angle Grinder, 10.5 AMP includes: 5-inch grinding wheel, side handle, tool-less wheel guard, inner flange, lock nut, and lock nut wrench.

Product Features

Super Joint System (SJS) technology helps prevent gear damage caused by accidental wheel binding Powerful 10.5 AMP motor delivers more output for increased performance Electric brake for maximum productivity Rotatable gear housing can be positioned every 90° Refined design at only 5.9 lbs. for reduced operator fatigue AC/DC switch for use with alternative power source Labyrinth construction seals and protects the motor and bearings from dust and debris for longer tool life Externally accessible brushes for greater serviceability Ergonomic soft grip provides increased comfort on the job Ideal for welders, fabricators, masons, maintenance/repair and more 5"" Grinding Wheel (741407-8-1) Side Handle (153504-2) Wheel Guard (135108-2) Inner Flange (224399-1) Lock Nut (193465-4) Lock Nut Wrench (782424-9) GS5000 9557PBX1 9564P GA7031Y GA9031Y GA6020 GA5020Y GA4534 GA4530 GA4030K GD0601 9565PC 9564PC 9566PC GA6010Z GA5010Z GD0600 GA9040S GA9020 GA7040S GA7020 GA7021 GA7011C 9558PB 9557PB 9557NB 9566CV 9015A GD0800C GA7001L 9005B 9565CV 9564CV Refined Design at only 4.8 lbs. AC/DC switch for use with alternative power source Labyrinth construction seals the motor from dust and debris by creating a complex set of channels prohibiting contamination Externally accessible brushes for greater serviceability Soft Grip for more comfort and control

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