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Makita GA5020 5-Inch Angle Grinder with Super Joint System

by Makita

List Price: $250.00
Price: $130.61 & FREE Shipping. Details
You Save: $119.39 (48%)
Only 7 left in stock (more on the way).
Ships from and sold by Amazon.com. Gift-wrap available.
  • 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
  • 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
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8 new from $130.61

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$130.61 & FREE Shipping. Details Only 7 left in stock (more on the way). Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

Makita GA5020 5-Inch Angle Grinder with Super Joint System + Makita BL1830-2 18-Volt 3.0 AH Battery, 2-Pack
Price for both: $299.61

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Special Offers and Product Promotions

  • Warranty Offer: Select Makita power tools shipped from and sold by Amazon.com are covered by a one-year manufacturer's limited warranty. Please see the full Makita warranty for more details.

Technical Details

  • compact

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This item: Makita GA5020 5-Inch Angle Grinder with Super Joint System
Customer Rating (2) (1) (2) (3)
Price $ 130.61 $ 82.60 $ 133.42 $ 151.75
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Included Components bare-tool stand Information not Provided bare-tool
Dimensions x 6 inches x 14 inches 4.75 inches x 14 inches 5.51 inches x 18.62 inches
Power Source electric-powered electric-powered electric-powered electric-powered
Special Features compact compact variable-speed compact
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Product Description

Product Description

Includes 5-in Angle Grinder w/ SJS - GA5020-R, 5-in Grinding Wheel - 741407-8, Side Handle - 153504-2, Tool-Less Guard - 163474-7, Inner Flange - 224399-1, Lock Nut - 193465-4, Lock Nut Wrench - 782424-9


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 makitatools.com. 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 makitatools.com 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 Information

Technical Details
Part Number GA5020
Item Weight4.8 pounds
Product Dimensions15.5 x 6.8 x 5.7 inches
Item model numberGA5020
Power Sourceelectric-powered
Voltage120 volts
Item Package Quantity1
Special Featurescompact
Included Componentsbare-tool
Warranty Description1-year warranty
Additional Information
Best Sellers Rank #41,361 in Home Improvement (See top 100)
Shipping Weight7.8 pounds (View shipping rates and policies)
ShippingThis item is also available for shipping to select countries outside the U.S.
Date First AvailableNovember 9, 2005
Warranty & Support

Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.
Warranty, Parts: Parts

Important Information

Bulb Voltage
120.00 Volts

Customer Questions & Answers

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Most Helpful Customer Reviews

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This unit is like the first Makita (they made in Japan at that time) not as heavy as those old models but work as well, hope it will last as those old one.
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We received this item in and at the cost we paid was the best deal we could find / even going through a distrubutor we found this the best cost for the same item?
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Makita GA5020 5-Inch Angle Grinder with Super Joint System
This item: Makita GA5020 5-Inch Angle Grinder with Super Joint System
Price: $250.00 $130.61
Ships from and sold by Amazon.com