10 Best Angle Grinders (Review) In 2021
Ever since he was a child, Jason has loved repairing, building and creating things. Growing up, he spent all his free time carving intricate woodcraft pieces that soon caught the eye of neighbours and friends. Before he knew it, Jason turned his hobby into a job, earning an income from being his hometowns handyman. Many years have passed since then but Jason’s enthusiasm for woodwork remains the same. He can usually be found in his workshop, crafting furniture or restoring old treasures.
1. BLACK+DECKER
Key Features
6 amp motor, 10k rpm
3 position side handle
Metal gear case
Spindle size range: 5/8 – 11 inches
Includes grinding wheel and spanner wrench
Perfect for a range of jobs such as sharpening, cutting, grinding, and more, the BLACK+DECKER Angle Grinder Tool is a corded version that gets the job done! This 4-1/2 inch grinder includes a 3 position side handle that gives you a great range of control and variation of angles; the spindle lock also allows you to swap accessories easily. The metal gear case helps prolong the life of this power tool, also protecting the motor. A built-in safety feature includes a one-touch release switch, which quickly cuts power to prevent injury. This tool measures 12.5 x 5.19 x 4.63 inches and weighs 4.49 pounds. A two-year limited manufacturer’s warranty is included.
Pros
One-touch shut off
Powerful motor
Durable and long-lasting
Great for use on rock, metal, and concrete
User-friendly
2-year limited manufacturer’s warranty included
Cons
Cutting wheel needs to be purchased separately
On/off switch sometimes sticks slightly
2. Bosch 4-1/2-Inch Option
Key Features
6 amp motor, 11,000 rpm (no load)
2 position handle for ergonomic use
8 ft power cord
Lock-on switch
5/8 – 11-inch spindle works with a range of sizes
Includes spanner wrench and abrasive grinding wheel
Ideal for those who work in metal or vehicle fabrication, plumbers and many other professions that require the use of one, the Bosch 4-1/2-Inch Angle Grinder is compact and easy to use, but sure packs a punch of power. With a 6 amp motor and functioning speeds of 11,000 rpm (no load), this corded version gets the hard work done. There is a 2 position handle ergonomically designed so that you can use this tool comfortably while getting the angle required for a clean cut. Safety features include a sealed switch to prevent any dust and debris from clogging the switch, as well as the Bosch Service Minder Brush System that will warn you when maintenance is required. This compact grinder measures 14.4 x 5.2 x 5.2 inches and weighs just 3.08 pounds, making it perfect to move between job sites.
Pros
Sealed switch
Alerts you when maintenance is required
High quality, durable construction
Easy to set up and use
Compact and lightweight
Cons
Motor can get quite warm when used continuously
Cord could be more durable, take care while using
3. DEWALT
Key Features
Best power output to weight/size ratio
1.8 horsepower motor
11 amp, 11,000 rpm
2 position side handle
72-inch power cord
Dust ejection system built-in
For exceptional power levels, the DEWALT features a brushless motor which increased its durability and allows you to increase run time. Delivering 2.1 joules of impact energy and 11,000 rpm, enabling you maximum performance this paddle switch is easy to operate. This electric grinder tool has a two-position side handle for ease of use. A dust ejection system prevents damage by ejecting any dust and debris. The guard is capable of rotating up to 360 degrees and can easily be moved to fit your needs. While this tool only comes as it is (no wheel included), it is equipped with a quick-change wheel release which makes it easy to use your wheels compatible with this grinder. Safety features include a safety lock-off which will stop turning it on accidentally as well as an auto shut-off when the brushes require replacement. The overall product dimensions are 15.63 x 5.94 x 4.81 inches. A 3-year limited warranty is also included.
Pros
360-degree guard rotation
Oversized brushes allow for longer lifespan
Quick change wheel release
Easy setup
Has a paddle switch
Includes a three year limited warranty
Cons
No wheel included
No spanner wrench included
On the louder side
4. Makita Paddle Switch Cut-Off
Key Features
Large paddle switch
7.5 amp power, 11,000 rpm
Lockable on/off switch
Includes 1x 4-1/2 inch Turbo Rim Diamond Blade
Includes 5x 4-1/2 inch grinding wheels
With a durable and powerful motor, this hand grinder tool by Makita is our best value pick. Featuring an easy-to-use paddle switch, with Makita Paddle Switch Cut-Off you can easily toggle your tool on or off, with it also delivering up to 11,000 rpm. The gear housing offers rotation up to 90 degrees, both left and right, so you have more control over the accuracy and precision while grinding or cutting. Ideal for left hand or right-hand users, this product allows you to install the side handle to the side that suits you. The tool-free guard means you can easily clamp your grinder while in use. The labyrinth style of construction paired with the zig-zag varnishing protects the motor from any debris. This compact power tool weighs only 4.5 pounds. A one year warranty is included.
Pros
Supplied with a metal tool case
Constructed to prevent debris entering the motor
Multi-functional use
Ideal for left/right-hand users as handle can be installed on either side
Metal gear housing for added durability
Includes a warranty
Cons
Can overheat if used for too long
May need to purchase additional tools to swap the blade guards
5/8 inch accessories and wheels only
5. PORTER-CABLE 20V MAX
Key Features
20v max system producing 8,500 rpm
Cordless angle grinder
Wheel diameter of 4-1/2 inches
3 position side handle
Cast metal gear housing
Includes a spindle lock and tool-free guard
For high-performance power on the go, this offering by PORTER-CABLE is an excellent choice as it is a offering up to 8,500 rpm. The PORTER-CABLE 20V MAX Tool has 3 positions contoured side handle that allows you to set its position for comfort and ease of use. Many angle grinders can overheat while in use, but the thoughtful design put forward by PORTER-CABLE includes a cast metal gear housing that helps evenly distribute heat, keeping it cool even for longer durations. The spindle lock allows you to quickly and easily swap out wheels while the tool-free guard also allows for easy adjustment. It measures 15.31 x 6 x 6 inches and weighs 6.69 pounds. A three-year limited warranty is also included.
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Pros
Ergonomically designed handle for comfort while using
Can run for longer periods of time without overheating
Allows for greater versatility as it is cordless
Compatible with a range of battery models
Durable build
Includes warranty
Cons
Brushes cannot be replaced
Batteries not included
No lock on/off switch
6. Metabo HPT
Key Features
6.2 amp motor, maximum power output of 980 watts
Left or right mounted side handle
Includes a spindle lock
Quick shut off safety feature
Includes 5 wheels (4-1/2 inch disc size)
Includes carry case
With a low and compact profile, the Metabo HPT is the best choice for those who need to complete work in tight spaces. The 6.2 amp motor provides high performing power with a maximum output of 980 watts. The side handle is removable so it can be positioned on the left or right side, depending on the preference of the user. The spindle lock allows for quick and easy changes between discs. The power button is located on the left-hand side of the grinder, sliding on and off, although there is also a quick-off safety feature built-in. Five wheels (4-1/2 inch disc size) are included as well as a carry case, keeping all of your tools neat and tidy and easy to transport between sites. It measures in at 10.15 x 4.5 x 2 inches and weighs just 4 pounds, also making it light and compact for travel. An impressive five-year warranty is included.
Pros
Compact yet durable
Low profile for tight spaces
Can be used for extended use and doesn’t overheat
Impressive 5 year warranty
Cons
Guard cannot rotate up to 360 degrees
Vibrates more than other models
7. Milwaukee M18
Key Features
Cordless angle grinder
4-1/2 – 5 inch
High performance
Tool-free adjustments
Metal housing and gear system
Our premium pick is the Milwaukee M18 which uses the power of a corded version without the cord! The red lithium battery doubles the run time, allowing you to work for longer and much more efficiently. The paddle switch also makes using this grinder very simple. The side handle is built onto the right-hand side of the tool and allows you to grip it perfectly for comfort while in use. Many that require the use of tools to adjust the guard and change out accessories, however, this model is completely tool-free! The metal housing and gear system are durable and built to last, so this power tool will become a trustworthy addition to your toolbox. It measures 2.3 x 12.9 x 7.6 inches and weighs 5 pounds. It also includes a five-year warranty.
Pros
Paddle switch
Great portability
Includes overload protection
Ergonomic handle
Warranty included
Cons
No battery included (requires 2 lithium-ion batteries)
No grinding wheel included
8. CRAFTSMAN Small
Key Features
4-1/2 inch
6 amp, 12,000 rpm
3 position handle
Tool-free guard
Spindle lock
This budget pick from our list, the CRAFTSMAN Small offers a 6 amp motor with a power output of 12,000 rpm, ideal for light-duty applications. The contoured side handle can be positioned in three different ways, making it ideal for a range of applications. The spindle lock helps you quickly and easily switch out wheels and with it being tool-free, you need not worry about having a wrench handy. This compact measures in at 12.27 x 3.45 x 4.43 inches and weighs 4.56 pounds.
Pros
Inexpensive
Contoured, ergonomic side handle
Great for light-duty work
Good quality
Cons
Can get hot while using
No place to store the key
Power lock button is a bit confusing
9. KIMO 20V Brushless
Key Features
4.0Ah lithium-ion battery-powered angle grinder
Metric arbor M14x2mm
9,000 rpm power
Brushless motor
2 position side handle
Includes sandpaper, 5x each cutting & grinding wheels
For a complete kit, this offering by KIMO is a great option! The KIMO 20V Brushless Cordless includes the lithium-ion battery as well as five each cutting and grinding wheels. Despite this grinder being cordless, it does not lack in power and is still capable of achieving just as much as a corded one. Many products overheat when used for heavy-duty usage, however, this grinder includes an optimized cooling system that maintains a temperature of 47 degrees Celsius, which is the optimal temperature for high performance. The wheel guard is constructed from cast metal which pairs safety with durability. The side handle can be a position to the left or right-hand side, giving you more control in a variety of applications. It measures 13 x 3.8 x 5 inches and weighs 5.3 pounds.
Pros
Includes a wood cutting wheel
Includes a carry bag, great portability
1000 hour battery life
Cast metal wheel guard
Ventilation system prevents overheating
Cons
Nonstandard arbor size
Guard cannot rotate the full way around
No safety on/off switch
10. Meterk Electric
Key Features
4-1/2 inch corded angle grinding machine
6A motor with 12,000 rpm
115mm disc size
Spindle lock
One-hand control trigger lock
Includes 3 each cutting and grinding abrasive wheels
The Meterk Electric features a high-quality motor, offering up to 12,000 rpm making it ideal for cutting, grinding, polishing, and removing rust. The handle can be positioned to the left or right increasing its ease of use. With just one hand, you can operate this item and the two-stage safety trigger helps prevent accidents. The spindle lock allows you to quickly and easily swap wheels depending on the required application. A heat dissipation system is built in to help prevent overheating. It measures 12.2 x 5.12 x 4.33 inches and weighs 5.84 pounds. A 24-month warranty is also included.
Pros
Handle can be installed to the left or right
Includes a safety trigger
Compact and durable
Cons
Quite noisy
User manual is poorly translated
Features To Consider With Angle Grinders
Disc Sizes
When it comes to disc size, the larger the disc, the more power the angle grinder will have. You will sometimes also see the disc referred to as a head or wheel. One of the most popular disc sizes is 4-1/2 inch and this disc size is commonly found with most models, so you can easily switch out your disc with another, even if they are not the same brand as your angle grinder.
Power Source
Corded power tools are always much more powerful than cordless and this is also true with angle grinders. The power source of your angle grinder will determine the amount of power it can deliver. Typical power sources for angle grinders include electricity (corded), battery (cordless), petrol, or compressed air (pneumatic). Depending on the purpose of your angle grinder, the power source is a feature you will want to consider; light to medium applications will mean a corded or cordless angle grinder will be fine, but if you are looking at more heavy-duty applications that require a great deal of precision, a pneumatic angle grinder may be best.
Speed
The speed at which the disc rotates, referred to as the rotations per minute (RPM), will help determine the power it holds. While you may think the higher the RPM, the more power it would create, however, it is actually the other way around! Larger, more powerful angle grinders have a lower RPM but offer exceptional power. Depending on the way in which you use your grinder, a high RPM is still capable of working well but is better suited for light to medium applications. Heavy-duty applications will require a larger angle grinder with lower RPM.
Disc Guard
The disc guard is a key consideration when it comes to angle grinders as it is an important safety feature. The disc guard prevents broken pieces from hitting the user as well as prevents the user from being able to accidentally touch the moving blade. The guard also protects the disc itself, so when it is set down, the weight of the tool won't be placed upon the disc entirely. Metal disc guards are the most durable and you will find this on the best angle grinder models, however, the majority of them are plastic.
Loud Noise
Like most power tools, angle grinders are quite loud when running. On average, the noise level of an angle grinder is about 95-100dB; when you compare this to 140dB which is the level of sound created when a jet engine takes off, you can see that they are pretty loud! Smaller angle grinders do tend to be a bit quieter, but you will always need to ensure you wear appropriate gear to prevent any damage to your hearing.
Durability
The majority of angle grinders are made up of a combination of metal and plastic which gives them relatively good durability. While the tool itself is likely to be functional for many years, its the discs that tend to be less durable and require replacement much more often. Diamond cutting discs are much more durable, however, they are more expensive; do bear in mind though, a diamond disc shouldn't be used to cut metal otherwise it will weaken in hardly any time!
Ergonomics
The side handle should be ergonomic for ease of use and comfort! The best angle grinder will allow you to move the handle to a few different positions so that you can use it for a range of functions. Another key consideration is whether you can mount the handle to the left or right.
Safety
Angle grinders can be a very dangerous power tool if not handled correctly. One of the biggest considerations should be the availability of a safety slip clutch or something similar that will automatically shut the tool off should you drop it, for example. Being able to rotate the guard is also a great safety feature. Bench vises might help you keep the object of griding in one place.
Angle Grinder FAQ
Q: What kind of tasks can I use an angle grinder for?
Angle grinders provide such versatility, so they are a great tool to add to your collection! From cutting, grinding, deburring, finishing, and polishing, there are endless options; you can use them on metal, tile, concrete, wood, and much more. The best angle grinders will include a variety of discs you can use for a variety of purposes, but if not, always just double-check what discs they can accommodate and you can purchase your own.
Q: How to change the blade on an angle grinder?
Before changing any blade on your angle grinder, ensure it is powered off. It is a good idea to unplug it (if corded) or remove the battery (if cordless) to ensure you do not accidentally turn it on while changing the blade. Some angle grinders are tool-free and you can replace the blade without tools, although some will require you to use one. Assuming tools are required, you would need to use a screwdriver to remove the disc guard; then, loosen the screw that keeps the disc secure, or release the latch. Hold the blade lock-in and turn the grinder so the wheel is upwards facing. Try to turn the wheel; if it doesn't move it means it's locked, but if it does move, release the blade lock and press it again. Depending on the model of your angle grinder, you may need to use a wrench to turn the arbor nut counterclockwise and remove it. You can then remove the blade with ease; position the new blade and place the arbor nut back in place and tighten it so that the blade is secured.