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Makita 9557NB 4-1/2-Inch Angle Grinder

3.8 out of 5 stars 22 customer reviews
| 10 answered questions

Was: $69.00
Price: $59.00 & FREE Shipping. Details
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  • The product is 4-1/2" Angle Grinder AC/DC, 7.5A Motor, Spindle Lock For Easy Wheel Changes
  • Easy to use
  • The product is manufactured in China
  • High power-to-weight ratio
  • Labyrinth construction seals motor and bearings from contaminates
  • Conveniently located side-mounted switch
  • Small circumference barrel grip for improved handling
  • Spindle lock for easy wheel changes
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Frequently Bought Together

  • Makita 9557NB 4-1/2-Inch Angle Grinder
  • +
  • Makita A-94552 4-1/2-Inch Turbo Rim Diamond Masonry Blade
Total price: $69.89
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Technical Details

  • compact

Compare to Similar Items


This item: Makita 9557NB 4-1/2-Inch Angle Grinder
Customer Rating 4 out of 5 stars (22) 4 out of 5 stars (389) 5 out of 5 stars (158) 4 out of 5 stars (56)
Price $59.00 $75.61 $85.00 $126.59
Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping
Sold By Amazon.com Amazon.com Amazon.com Amazon.com
Dimensions 6 inches x 14 inches x 5 inches 0 inches x 0 inches x 0 inches 4.81 inches x 15.63 inches x 5.94 inches 5.75 inches x 15.25 inches x 5.5 inches
Item Package Weight 6.4 pounds 11.95 pounds 6.15 pounds 7.05 pounds
Power Source electric-powered electric-powered Corded-Electric electric-powered
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Product Description

Product Description

The product is 4-1/2" Angle Grinder AC/DC, 7.5A Motor, Spindle Lock For Easy Wheel Changes, Small Circumference Barrel Grip For Easy Handling, Grinder Includes: 4-1/2" Grinding Wheel, Side Handle & Wheel Guard.. Easy to use. The product is manufactured in China.

From the Manufacturer

This powerful 7.5 AMP 4-1/2" angle grinder has an exclusive labyrinth construction that seals the motor and bearings from contamination. The 9557NB features a switch (AC/DC) that is conveniently located on the top of the motor housing; a small circumference barrel grip for easy handling, a high power-to-weight ratio and a double insulated motor. A spindle lock makes for easy wheel changes and the side handle can be installed on either side of tool. Kit includes grinding wheel, wrench, side handle, flange and wheel guard.

Product Information

Technical Details

Part Number 9557NB
Item Weight 3.1 pounds
Product Dimensions 14 x 5 x 6 inches
Item model number 9557NB
Color Teal
Power Source electric-powered
Voltage 120 volts
Wattage 840 watts
Item Package Quantity 1
Special Features compact
Included Components bare-tool
Batteries Included? No
Batteries Required? No
Warranty Description 1 Year Parts & Labor

Additional Information

ASIN B0009OR8X4
Customer Reviews
3.8 out of 5 stars 22 customer reviews

3.8 out of 5 stars
Best Sellers Rank #122,878 in Home Improvements (See top 100)
#122 in Home Improvement > Power & Hand Tools > Power Tools > Grinders > Angle Grinders
Shipping Weight 6.4 pounds (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First Available July 2, 2004

Warranty & Support

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

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Customer Questions & Answers

Customer Reviews

Top Customer Reviews

By E. Redifer on October 31, 2014
I bought a pair of these Makitas a couple years ago and have used them quite a bit.

They are good workhorse grinders.

The best feature about them is they run nice and smooth - much smoother than my Bosch grinders.

The ergonomics are just OK. The barrel is pretty big for my hands - it's a bit too bulky to use the grinder one handed.

This summer I ran one of them for many hours with a masonry blade in it. I had to rebuild some brick steps on my house and I had to remove the old mortar from quite a few bricks. I probably ran the grinder for 10 hours straight, holding a brick in one hand and holding the grinder in the other with a masonry cutoff wheel in it. - I went through about 10 wheels. The job was really dusty and dirty but the grinder didn't miss a beat, and has nice power.

The blade changes are typical, a pin wrench to loosen the nut. The tool has a nice wheel lock button on it.

What do I not like? The switch. The thumb switch on these is very difficult to use, especially if you are wearing gloves. It just doesn't seem to want to stay switched on, any slight touch of the switch and it turns off. When I had heavy leather gloves on it seemed I couldn't even turn it on and get my thumb off the switch without my gloves switching it back off. This was extremely frustrating. I know they do this so the grinder is safe and to be fair, I've found almost all angle grinders are n this regard wth the exception of Metabo.

So there you have it. It's a good grinder. It runs smooth. It is durable. The barrel is a little thick for my tastes, and I don't really like the locking mechanism on the switch.
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This thing works like a champ. It recommends NOT using it as a cutter, but what the heck, life is too short. I use it as a cutter and it works great. Be sure to wear protective clothing and goggles because when that blade breaks, it flies! As a grinder, it is awesome. I gave it only four stars because it comes without a case. I like my cases, I can keep all my blades, tightening tool, etc. in one spot.
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The switch on this, like noted elsewhere, is very sensitive and only gets worse after wear. At this point, the switch on mine just slips off all by itself. (The brushes are good.) After dissecting the unit, my guess is that the edge of the switch hooks on to some plastic of the blue housing, and once this plastic rounds over the switch will not stay on. The only fix I could think of for this is to drill a screw into the switch while in the ON position (unplugged of course) and install an in-line switch on the power cord. For this reason I would recommend the paddle switch version of this grinder, 9557PB.
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By Damien B on August 12, 2013
Works great, super smooth. Nice thick cord. I tried a Hitahchi and returned it. Get the real deal. I dont know what the guy is complaining about it being made in China, so what. It works great.
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There really isn't much to say about a grinder. One of the oldest power tools and simple in function (which is to say its a brute force tool) therefore it lacks any features besides a spinning blade.
Makita's tool has a nice feel to it with plenty of power. The switch is fine but quite close to the cutting wheel. Don't use it without the guard! Wheel changing isn't bad with the special tool and lock nut.
Again it's almost impossible to mess up the design of a small grinder. They are just too simple a tool and Makita does do that.
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The low price made me sceptical at first. After getting the grinder and trying it out, I was impressed with the quality.
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I am rebuilding my 1930 Model A Ford Tudor, and got tired of changing flap discs, wire brushes and cutting wheels all the time. I already have a Makita 4" I have had for 35 years, still going strong! I have been using the new one for several weeks now and love it! This new one seems every bit the grinder as the old one! I have other Makita products and am very happy with them. I think my next one will be the Metal Chop Saw. HOPE THIS HELPS!
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By jtvt on August 5, 2011
Pretty well balanced, and very slim to grip one-handed. Plenty of power for almost everything I can imagine anyone using a 4.5" grinder for. The switch is also very sensitive, if you need to turn it off in a hurry it's not hard, feels safer than some.

Unfortunately, this is made in China, and given the luck I've been having with their products of late, I probably wouldn't have had the GF pick this up for me had I known. C'mon Japan, you can do better.

If one-handed operation isn't a priority, may I recommend the superbly balanced and even more powerful Metabo which I have also had the pleasure to use? It's made in Germany!
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