|120||6.1||13.1 x 5.5 x 5.5|
|Makita GA4030K 4||120||9||17 x 6 x 13|
|DEWALT DWE402 4-1/2||120||6.2||15.6 x 5.9 x 4.8|
|Makita 9557PBX1 4-1/2||120||11.9||5.8 x 15 x 10|
|DEWALT DWE4120 4 1/2||120||5||15.8 x 5.6 x 4.7|
|WEN 944 7-Amp Angle Grinder||-||4.6||14.5 x 8.5 x 3.8|
|Bosch GWS8-45 Angle Grinder||120||4.2||11 x 3 x 3.7|
|Makita GA7021 7-Inch||120||16||18 x 7.9 x 5.5|
|Black & Decker BDEG400||120||4.8||12.5 x 5.2 x 4.6|
SKIL 9296-01 7.5-Amp 4-1/2-Inch Paddle Switch Angle Grinder — Best Consumer Grade Angle Grinder 2017
Makita GA4030K 4-Inch Angle Grinder — Most Portable Angle Grinder
This Makita is our only 4” disc diameter angle grinder. While the slightly smaller disc may limit some of its versatility, this grinder provides a wealth of power for its size and is well suited for a wide variety of tasks.
However, the motor itself is a bit underpowered at on 6 amps. Moreover, the 4” disc will not be large enough for all of the cutting tasks you might have.
DEWALT DWE402 4-1/2-Inch 11-Amp Paddle Switch Angle Grinder — Most Powerful 4 ½” Angle Grinder
DeWalt is somewhat in the same boat as SKIL. Once known as one of the top power tool brands for professional grade quality, their reputation has soured a bit after being bought out by Black & Decker which led to a decline in their tolls’ quality. However, DeWalt is still recognized as a professional grade brand
The first of our two DeWalts is the most powerful 4 ½” angle grinder on our list. With an 11 amp motor, this angle grinder is as powerful as many grinders which feature a disc much larger in size.
Moreover, 11000 rpms is plenty for almost any job, and this is one of the few grinders on our list to provide a horsepower rating. At 1.8 hp, you can be sure this motor is more powerful than any except the 7”.
Makita 9557PBX1 4-1/2-Inch Angle Grinder with Aluminum Case — Best Complete Kit Angle Grinder
Unfortunately, those unscrupulous distributors are more than willing to sell a refurbished of malfunctioning product as new and provide no customer service thereafter. As such, it will be incumbent on you to figure out which distributor you should trust—and Amazon is not a sure fire bet in this regard.
Still, this angle grinder does come with some nice features and extras that can make it a good deal, assuming you purchase it from the right distributor. The included case is one of the best on our list. Its housing is made from aluminum with a zinc finish. This will keep your grinder safe from damage and prevent rusting.
Moreover, the inside features an injected molded interior to keep your grinder secure in transit.
DEWALT DWE4120 4 1/2-Inch Paddle Switch Angle Grinder, Small — Best Angle Grinde rfor Cutting
Our second DeWalt is nearly as good as the first, and may even be considered better depending on what you are looking for. First, while this DeWalt’s motor is not quite as powerful as the previous model’s, it still features a robust 7 amps.
Moreover, this DeWalt actually features the highest rpms out of any product on our list at 12000. This makes the DeWalt exceptionally effective at cutting metals and other hard materials.
Unfortunately, this DeWalt also suffers from some of the flaws as its predecessor. First, while not quite as heavy, this DeWalt is still pretty hefty at 5 pounds. Moreover, this DeWalt also has the same large profile which makes using it for extended periods of time more liable to cause hand fatigue.
WEN 944 7-Amp Angle Grinder, 4-1/2″ — Best Budget Angle Grinder
However, WEN excels at making consumer grade products that can compete with any other in its class, and this angle grinder is a prime example of that.
At the lowest price out of any product on our list, the WEN still provides a surprising amount of power.
While just a hair underpowered, the 7 amp motor is still nearly on par with professional grade quality, while the 11000 rpms is exactly what you would expect from a professional grade angle grinder.
Bosch GWS8-45 Angle Grinder — Best All-Around-Value for an Angle Grinder
However, Bosch and Makita often trade positions based on what tool is reviewed and what the user needs.
Generally, the Makita will provide more raw power, but the Bosch will provide a better value with more durability. In the 4 ½” angle grinder category, the Bosch ultimately provides the most value, and is superior to pretty much every angle grinder in its class that we reviewed.
While it is not the cheapest product on our list, it is incredibly reasonably priced for a truly professional grade power tool. The 7.5 amps and 11000 rpms are about what you expect in this class.
Makita GA7021 7-Inch Angle Grinder — Best Angle Grinder Over 4 ½”
Instead, the large disc diameter puts this tool in a different category altogether, and it will be better suited for some jobs and not other.
To point, this Makita is probably the best angle grinder on our list if you want to cut metal or other hard materials.
That is in a large part due to its power, which is produced by a beastly 15 amp motor. That being said, this angle grinder does run a touch slow at only 10000 rpms, but it more than makes up that speed with an increased torque.
However, with the powerful motor and increased torque, this angle grinder is not at all suited for softer materials.
Black & Decker BDEG400 6-Amp Angle Grinder, 4-1/2-Inch — Most Ergonomic Angle Grinder
Moreover, even within that category, it often struggles to compete against some of the up-and-comers like SKIL. Still, the Black & Decker has a market and appeals to that niche specifically.
First, this angle grinder is almost as cheap as the WEN, which still makes the price point incredibly attractive—especially to the weekend warrior.
However, it is this angle grinder’s dedication to ergonomics that truly dig out its niche. First, the grinder features a 3 position side handle, so you can use it with an over handle if desired.
More than any other factor, this will determine the extreme limits of what you need from an angle grinder. Despite its name, angle grinders are used for a whole host of jobs other than grinding. For example, when cutting metals, it can be incredibly effective and convenient to use an angle grinder with the proper disc.
Conversely, an angle grinder can also me used to sharpen or polish metal. For non-metallic material, the grinder can even be used as a sander or an impromptu lathe for shaping—though, an angle grinder can accomplish both tasks with metallic materials as well.
If you never intend to use the angle grinder to cut through metal pipes, then there is no reason to spend the extra money getting a top of the line angle grinder for which its highest demand features never see use. Of course, angle grinders which are rated to accomplish some of the more punishing tasks are often better at producing the best results for the more routine ones as well, so the quality of the tool—and the job itself—may influence you to purchase an angle grinder with capacities that will rarely, if ever, see use.
A purview across the internet will turn up a couple results here, however there are generally 2 primary indicators of an angle grinder’s power—not 3. The two that matter most are volts and amps. These two qualities apply to cordless and corded angle grinders respectively.
The outlier that many people will bandy about is watts. However, watts is a measurement of amps and volts. Moreover, while corded angle grinders are generally measured in amps, they of course have a voltage—generally 120. The same applies to cordless angle grinders—though the amps may vary a bit more there.
Regardless, the main thing that you are looking for with power is to give you a quick estimate of the product’s grade. A professional grade product will always produce superior power, though there will be the occasional consumer grade product with professional grade power. However, those products will always have some other fatal flaw, or a few, that prevent them from being able to stand up to the rigors of continuous professional jobs.
When it comes to corded models, there is a bit more wiggle room. For this type of angle grinder, you can find an amperage rating of anywhere between 4 to 15 amps. For corded models, the power standards are a bit more regular. Corded power tools—regardless the type—generally come in either 10.8/12 volts or 18/20 volts.
Technically, pneumatic angle grinders also exist. This type of angle grinder uses pressurized air to generate its power and is measured in pounds per square inch, or PSI. However, this angle grinder will either require a portable air compressor or, more commonly, a dedicated air compressor onsite. As such, pneumatic angle grinders are more likely to be found in a dedicated workshop or other professional setting where a large compressor can continuously feed the grinder with compressed air.
The speed of an angle grinder is measured in rotations per minute, rpms, of the disc. However, this is not a situation where more is always better. Unlike with power, the higher the speeds, the more suited the angle grinder is for different jobs. In this regard, there is a handy rule of thumb: higher speeds are better suited for cutting, while lower speeds are better suited for polishing or sharpening.
If you use a grinder with either too high of a speed or with a speed setting that is placed too high for sharpening a blade, you are liable to simply chip and pulverize the blade’s edge into sparks and metal slivers. Conversely, if you try to cut through a metal pipe at too low a speed, it will take forever and you will likely have to go through multiple discs before you get the job done.
Angle grinders will come with rpm rotations between 4000 to 10000. If the grinder does not have a maximum rpm of at least 6000, it will not be suitable for cutting. Similarly, if the grinder does not have a minimum speed below 6000, it will not be appropriate for sharpening most metals and will not really be suited for polishing anything except in the most skilled of hands.
Discs, or wheels, have two size ratings: diameter and thickness. The diameter of the disc is more important if it is to be used for cutting. A disc with a larger diameter can cut through thicker material than a disc with a thinner diameter. However, it is a convenient trick to use a smaller diameter disc when you do not want to cut entirely through the material and simply with to score it. Of course, this requires a far higher degree of skill and should not be tried by amateurs.
The thickness of the disc may play an important factor for cutting purposes, but it is generally more relevant for the other uses of an angle grinder. The thickness of a disc is especially important if you need to polish or sand something down. It can also be relevant to sharpening edges, though not quite as much as with polishing or sanding.
Another important factor to consider with the discs is the material of the disc itself. Different materials will have different purposes with the harder materials generally being better suited for cutting purposes. Keep in mind, each task you ask of your angle grinder will have a corresponding pad that is most suited for the job. For example, a diamond disc is more or less necessary for a quality cutting action. However, aluminum oxide can also serve to cut softer materials while still sanding down wood as well as buffing or polishing harder materials.
If you only buy one angle grinder, your best bet is to go with the Bosch. While some angle grinders might be bigger or more powerful, the Bosch provides professional grade power with the reliability of its brand at a price point which provides the best all-around-value.
However, if you find you need something with a little more oomph, both DeWalts features a more powerful motor, though they both are more difficult to control. If you find you need exceptional power, your best bet it the 7” Makita which offers a 15 amp motor that cannot be topped on our list.
However, if you are not a professional, there are still plenty of solid consumer grade options available. SKIL is the best performing consumer grade angle grinder, though the WEN provides the best cost while producing a solid angle grinder. And if comfort is your primary goal, it is hard to go wrong with the Black & Decker.