Makita 4 in. 6-Amp Angle Grinder-GA4030 - The Home Depot


Model # GA4030

Internet # 203231751

4 in. 6-Amp Angle Grinder

Makita 4 in. 6-Amp Angle Grinder

This item has been discontinued.
The Home Depot no longer carries this specific product.

$52.00 / each


Model # GA4030

Internet # 203231751

Store SO SKU # 1000388849

Makita new GA4030 has the smallest barrel grip and are the most lightweight angle grinders in their class on the market. Makita has shown once again how to take an industry leading tool and refine it to make it better. This grinder incorporate labyrinth construction and zigzag varnish to seal and protect the motor and bearings from dust and debris, which Makita has established as an industry standard for Best-in-class angle grinders. Equipped with a barrel grip of only 2-1/4 in., a side handle positioned at an increased 20 angle, and weighing 3.1 lbs. these angle grinders improve not only comfort but control for the user. These new 4 inch angle grinder is ideal for many trades and applications including but not limited to weld smoothing, surface preparation, and cutting material.

California residents: seeProposition 65 information

  • Powerful 6.0 amp motor delivers 11,000 RPM for the most demanding applications
  • Small diameter barrel grip (only 2-1/4 in.) for added comfort
  • Labyrinth construction seals and protects the motor and bearings from dust and debris for longer tool life
  • Refined design at only 3.7 lbs. for reduced operator fatigue
  • All-ball bearing design and metal gear housing for added durability
  • Externally accessible brushes for greater serviceability
  • Protective zigzag varnish seals the armature from dust and debris for longer tool life
  • Machined bevel gears provide up to 2X longer service life than previous models
  • Side handle is positioned at an increased 20-degree angle for added comfort and control
  • Ideal for welders, fabricators, masons, maintenance/repair and more
  • Home Depot Protection Plan:

    Home Depot Protection Plan

Info & Guides

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Assembled Depth (in.)  5.6 in  Assembled Height (in.)  4.7 in 
Assembled Width (in.)  13.66 in  Product Depth (in.)  10.75 
Product Height (in.)  4.7  Product Width (in.)  5.6 
Wheel Diameter (in.)  4 in 
Amperage (amps)  Arbor Size  M10 X 1.25 
Color Family  Blue  Cord Length (ft.)  8.2 
Corded Tool Type  Angle Grinder  Cordless/Corded  Corded 
Grinding Wheel Included  Yes  Maximum Speed (rpm)  11000 
Power Tool Product Type  Corded  Product Weight (lb.)  3.7 lb 
Reconditioned  No  Returnable  90-Day 
Side Handle  Yes  Spindle Lock  Yes 
Tools Product Type  Power Tool  Variable Speed  No 
Warranty / Certifications
Certifications and Listings  1-UL Listed  Manufacturer Warranty  1 Year Warranty 


Rated 4.9 out of 5 by 10 reviewers.
Rated 5.0 out of 5.0 by Fantastic, cuts through anything Years ago I worked at a 4wd shop, so I all my friends started bringing me their rigs. I quickly realized how much I needed some quality metal working supplies. This grinder will cut through anything. In the last month, I've cut 4 separate chrome bumpers, into high clearance bumpers. 3/8 steel for winch mounting plates. Taken rusty bolts off doors to pull them off for the summer. The grinder handled everything perfectly, and with ease. Now when my friends ask for a custom fabrication, I know it will be easily completed. I cannot recommend this product enough. It makes metal working fun. April 8, 2014
Rated 5.0 out of 5.0 by the little grinder that CAN! Makita, okay, but made in china... I hesitantly pluncked down my $40 froggys, but i must say this little grinder surprised me! It has an adapter to allow use of 4" or 4 1/2" cut-off and grinding wheels. I just used it for demolition of a relatively small bathroom tile floor using a 4 1/2" diamond cut-off wheel, & it never stuttered! I ran it hard all day, half expecting it to give out, but no matter what i threw at it, it kept going. This was the first time i had to really rely on it, & it came through like a champ! It even fit in a few places that a 4 1/2" grinder wouldn't have made it. I've owned this tool for a little over six months, but before now have used it fairly lightly, cutting bolts, rebar, etc. as well as light metal grinding. This grinder has an M10x1.25 arbor, so you'll need to pick up an M10x1.25 to 5/8"-11 adapter if you want to use it with most cup wheels. I definitely consider this tool to be an excellent buy, & would recommend it to a friend. December 14, 2014
Rated 4.0 out of 5.0 by First Angle Grinder I have purchased Used this tool just once so far, but it worked like a charm out of the box. I am a DIYer, and its ergonomic design makes it easy to to hold and cut with. I intend to use it far more over the holidays for maintenenace and repair tasks. So far, so good. December 10, 2014
Rated 5.0 out of 5.0 by It's a fine smooth running tool. I own and use grinders. I do stone work with diamond blades. Cutting stone with a turbo wheel requires a tool that is well balanced and smooth running. This is my favorite grinder, I own Hitachi, Bosch, Milwaukee, Rigid, Flex, and just bought two DeWalt's. They will be going on trial within the next few weeks so I'll let you know how they turn out. I've been in the construction field over 40 years and using grinders heavily for the past twenty. A grinder that is not balanced will wear you out long before the job is done. When i pick up one of these tools i will work nonstop for 2 hrs, take a break and then go on to put in an 8 to 10 hour day. The tool doesn't get much of a break and shouldn't break. June 26, 2014
Rated 5.0 out of 5.0 by Fantastic work tool This tool has to be the best one I have purchased in a long, long time. It has saved me more time than I can count and it works better than I ever expected. August 29, 2014
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