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Model #9557NB

Store SKU #452070

7.5 Amp Corded 4-1/2 in. Easy Wheel Change Compact Angle Grinder with Grinding Wheel, Wheel Guard and Side Handle

$7400
  • Powerful 7.5 Amp motor delivers 11,000 RPM for high output power
  • Labyrinth Construction protects the motor from dust and debris
  • Rotatable gear housing can be positioned every 90 Degree
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Product Overview

The Makita 4-1/2 in. Angle Grinder has a labyrinth construction that seals and protects the motor and bearings from dust and debris for a long-life, with an additional, protective zigzag varnish that seals the motor from contaminants by forming a barrier under rotation. This UL-listed grinder provides high-output power with its 7.5 Amp motor that maintains a 11,000 RPM speed to produce excellent grinding with a 2-1/2 in. small-circumference, barrel-grip handle for added comfort. All ball-bearing design and metal gear housing provide durability.
  • 7.5 Amp motor delivers 11,000 RPM for high output power in a more compact tool (only 4.5 lbs.)
  • Labyrinth construction seals and protects the motor and bearings from dust and debris for longer tool life
  • Spindle lock for easy wheel changes
  • Switch is located on side of the motor housing for operator convenience
  • AC/DC switch for use with alternative power source
  • Small diameter barrel grip (only 2-1/2 in.) for added comfort
  • Protective zig-zig varnish seals the armature from dust and debris for longer tool life
  • Rotatable gear housing can be positioned every 90 degree
  • Thicker coil wires are wound more closely to reduce heat and energy loss
  • All-ball bearing design and metal gear housing for durability
  • 1-year warranty
  • Includes: 4-1/2 in. grinding wheel (741424-8-1), wheel guard (125273-5), lock nut (193465-4), lock nut wrench (782422-3), inner flange (224399-1), side handle (153489-2)
  • Shop all Makita products
  • Click here for more information on Electronic Recycling Programs
  • California residents

Additional Resources

From the Manufacturer

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Price
$4497
$7900
$8900
$14900
Ratings
(2662)
(315)
(17)
(3494)
Cordless/CordedCordlessCordedCordedCordless
Wheel Diameter (in.)4.5 in4.5 in4.55
Power Tool FeaturesAdjustable Handle Position,No Additional Features,No Tool Wheel Change,Spindle LockSpindle LockAdjustable Handle Position,Lock On SwitchLock On Switch,Spindle Lock
Amperage (amps)07.57.5 A0.0
Voltage (volts)18 18
Battery Amp HoursNo Battery No Battery
Battery/ChargerTool Only Tool Only
View ProductView ProductView ProductView Product

Specifications

Dimensions

Product Depth (in.)
10.625 in
Product Height (in.)
4.187 in
Product Width (in.)
5.125 in
Wheel Diameter (in.)
4.5 in

Details

Amperage (amps)
7.5
Arbor Size
5/8" - 11 UNC
Color Family
Teal
Condition
New
Cord Length (ft.)
8.2
Corded Tool Type
Angle Grinder
Cordless/Corded
Corded
Electronic Speed Control
No
Maximum Speed (rpm)
11000
Power Tool Features
Spindle Lock
Product Weight (lb.)
4.5
Returnable
90-Day
Tools Product Type
Power Tool
Variable Speed
No

Warranty / Certifications

Certifications and Listings
UL Listed
Manufacturer Warranty
1 Year Warranty

Questions & Answers

Typical questions asked about products:

  • Is the product durable?
  • Is the product easy to use?
  • What are the dimensions of the product?

Customer Reviews

  • 4.3
    out of 315 reviews
  • 85%recommend this product
Filter by:
Showing 1-10 of 315 reviews
they burn up to easy
i purchased the first on 3-18-2018 never used it much it lasted a short time for it burned up it looked like new but of course it was out of warranty so i got the next one 7-18-2019 i lasted about the same amount of time to motors burn up you can smell them i have used many grinders over the years i have a 25 year old 4 inch mikita its been beat to death it looks bad and its still working great i always liked mikita it was a good brand i have many of there power tools but don't buy this grinder i wont get another one
by
    5 found this review helpful
    I picked up this grinder to cut some flagstone I had purchased through a third party. I had to pu...
    I picked up this grinder to cut some flagstone I had purchased through a third party. I had to purchase an additional wheel (Ridgid Diamond) because obviously the wheel it came with wasn’t for cutting stone. It works really well. The only issue I have with the grinder is the switch. It’s a little tough switching it on but I believe that’s due to safety concerns. Other than that, it works great. I’ve used it now for about 2 weeks off and on. Great tool to have around for many projects.
    by
    • Verified Purchase
    • Recommended
    1 found this review helpful
    The only THing wrong I see is the switch, is...
    The only THing wrong I see is the switch, is kind of hard to turn on, need to really use both hands to turn it on, eventually the switch will brake, I had another one before with the same issue. Other than that, very reliable tool.
    by
    • Verified Purchase
    3 found this review helpful
    This is an awesome grinder! I had used a porter cable angle grinder for a few years around the ho...
    This is an awesome grinder! I had used a porter cable angle grinder for a few years around the house and the brushes needed replaced. I ordered another Porter cable grinder (online) took it out of the box and it literally went up in smoke in less than 10 minutes in the middle of my project. I needed to finish so I walked into home depot and picked this up. I am so happy I did So very very smooth with no vibration compared to the Porter Cable units. I am using to grind floors with a 4 1/2" Dewalt diamond grinding cup and a dust collector attachment. The only thing is when grinding floors I wish the body was a little longer and thicker. I have big hands and this kinda feels like a kids toy. But it works great. The slide switch is really easy to use. I am not sure why people have mentioned having trouble getting it to lock on. I had a pc unit that had a paddle switch,,, Ughh - never again . I hate the paddle switch.
    by
    • DIY
    • Recommended
    1 found this review helpful
    Excellent product
    Excellent product
    by
    • Verified Purchase
    • Recommended
    love doos Tooth for tale worck
    love doos Tooth for tale worck
    by
    • Verified Purchase
    • Recommended
    3 found this review helpful
    Extremely easy to handle and cuts very well. Difficult to make precision cut though, so if it nee...
    Extremely easy to handle and cuts very well. Difficult to make precision cut though, so if it needs to be perfect - don't recommend it. Great for grinding down wood or composite wood (composite fence pieces).
    by
    • Verified Purchase
    • Recommended
    1 found this review helpful
    A++ Best Grinder Ever ! !
    6 years of personal hard use and abuse. Tortured and used just about every weekend. Built two ground up hotrods and many household projects. I was ridiculed for not buying a Dewalt but that same person needed it for a week in the oilfield when his Dewalt died. This grinder has been dropped a few times but always worked. Ground down and cut miles of steel and all metals. The cord never cracked or failed. The grip handle cracked on 6th year but never changed the performance. I disassembled the grinder thinking the bearing failed but it was the ring gear. Sold forever on the grinder. No complaints except it quit working at 10:00 pm on a Saturday night and Home Depot was closed. I'm going to get one after I complete this review.
    by
    • DIY
    • Recommended
    7 found this review helpful
    by
    • Verified Purchase
    Very happy with this purchase
    We bought this grinder for a large project at work. I've used it off and on for several days (sometimes 3-4 hours straight). I'm very happy with it. The price was great. It is lightweight, ergonomic and easy to handle. Grinding disks are simple to change. I specifically sought a corded grinder knowing how much continuous grinding I would need to do. I haven't experienced any overheating or duty cycle issues. Overall a great grinder for the money!
    by
    • Verified Purchase
    • Recommended
    Showing 1-10 of 315 reviews