The 10 Best Angle Grinders

Updated May 27, 2018 by Christopher Thomas

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We spent 44 hours on research, videography, and editing, to review the top choices for this wiki. If you work with metal in any capacity, a high-quality angle grinder will make your life a lot easier. These cut-off tools use an abrasive wheel to shear through solid material, perfect for cutting, brushing, or de-burring. The options on this list will make quick work of any task, while also being comfortable and durable enough to last you all day on even the most demanding job sites. When users buy our independently chosen editorial picks, we may earn commissions to support our work. Skip to the best angle grinder on Amazon.

10. DeWalt DW840

The DeWalt DW840 is a heavy-duty tool that is nonetheless ideal for tight spaces. It has a rear-handle design that makes one-handed operation easy and efficient, and its sealed ball-and-roller bearings keep dust and metal shavings from wreaking havoc on the internals.
  • external brush doors for easy access
  • high power-to-weight ratio
  • tends to overheat easily
Model DW840
Weight 12 pounds
Rating 4.0 / 5.0

9. Hitachi G12SR4

The professional-grade Hitachi G12SR4 boasts a powerful 6.4-amp drive with high overload durability. It's useful for a variety of applications, and comes with 5 grinding wheels, so you'll always have the right tool for whatever material you're working on.
  • smooth-operating slide switch
  • ergonomically angled side handle
  • speed control can be glitchy
Brand Hitachi
Model G12SR4
Weight 9.1 pounds
Rating 3.8 / 5.0

8. Bosch 1375A

The Bosch 1375A sports a two-position handle as well as a locking side switch that enables continuous operation, ideal for long days on the job. The guard is awkward and difficult to use, though, as it compromises your range of motion while working.
  • requires very little maintenance
  • includes one flange kit
  • lock nuts are bulky and not flush
Brand Bosch
Model 1375A
Weight 6 pounds
Rating 3.5 / 5.0

7. Metabo Lock-On

The Metabo Lock-On was designed with professionals in mind, with a variable-speed output for matching the RPM to the job. It has a re-engineered, mechanical disc brake system that safely stops rotation within seconds of switching off the machine.
  • tool-free guard and disc removal
  • highly precise cutting performance
  • priced on the expensive side
Brand Metabo
Model WEV15-125
Weight 6.3 pounds
Rating 4.8 / 5.0

6. Black & Decker 7750

Geared toward DIY and home improvement enthusiasts, the Black & Decker 7750 is great for around-the-house work. It will give you 10,000 RPM, which is more than enough for most jobs, and when combined with its low price point, it makes for a handy little tool indeed.
  • metal gearshift for added durability
  • 3-position handle for max comfort
  • power switch is rather fragile
Model 7750
Weight 4.8 pounds
Rating 4.0 / 5.0

5. Makita 4.5-Inch

If you want a tool that will last for years to come, the Makita 4.5-Inch has an exclusive labyrinth construction that seals the motor and bearing from dust and debris for a longer tool life. Plus, it comes with a hard case that keeps it safe and secure when not in use.
  • small barrel grip for easy operation
  • handle screws into either side
  • gear housing rotates 90 degrees
Brand Makita
Model 9557PBX1
Weight 12.2 pounds
Rating 4.8 / 5.0

4. Skil 9296

Designed with user safety in mind, the Skil 9296 features a non-locking paddle switch that's conveniently located on the bottom to keep your hands clear while you hold on to it, and it automatically turns off when released or dropped.
  • long power cord for easy movement
  • built-in wrench storage in handle
  • high quality at an affordable price
Brand Skil
Model 9296-01
Weight 6.1 pounds
Rating 4.7 / 5.0

3. Metabo W9-115

The Metabo W9-115 can be locked in 7 different positions, so you'll be in great shape no matter the angle you're working at. The gear housing can be rotated in increments of 90 degrees, making it versatile enough to be used by left- or right-handed operators.
  • safety slip clutch reduces kickback
  • high torque enables quick grinding
  • produces minimal vibrations
Brand Metabo
Model W9115
Weight 5.7 pounds
Rating 4.6 / 5.0

2. DeWalt 60V Max

The most important metric for a cordless grinder is its power, and the DeWalt 60V Max is one of the few battery-powered options that qualifies. It tops out at 9,000 RPM and accommodates up to 6-inch wheels, with enough torque that you won't miss your 120V model.
  • part of a quality li-ion tool family
  • a kickback-preventing auto-clutch
  • equivalent to a 13-amp corded unit
Model DCG414B
Weight 7.7 pounds
Rating 4.8 / 5.0

1. DeWalt E402

The DeWalt E402 gives you 1.8 horsepower in a 6-pound tool, so you'll enjoy a ton of brawn in a small, easy-to-handle package. It also comes with a one-touch guard that rotates 360 degrees with a single action, so you can finish jobs quickly and easily.
  • no tools required to change wheels
  • side handle for increased comfort
  • long-lasting brushless motor
Model DWE402
Weight 6.2 pounds
Rating 4.7 / 5.0

All About Angle Grinders

Angle grinders are a relatively new power tool with a somewhat murky past. There are conflicting reports about who actually invented them, with some giving credit to the German company Ackerman and Schmitt in 1954, while others give credit to Thomas Joseph and claim it was invented in 1973. Either way, they are a newer invention than many of the other commonly used power tools. Angle grinders also go a by a couple of different names. They may be referred to as disc grinders or side grinders.

Depending on the model, an angle grinder may be powered by compressed air, gasoline, or an electric motor. They are a versatile tool that can be used to cut, grind, sand, or polish materials. For each of these different applications, a specific type of disc will be used. These discs include polishing pads, sanding discs, cut off discs, grinding stones, abrasive discs, wire brush wheels and more.

The disc will be mounted on a geared head that spins at speeds ranging from 4,000 RPM to 12,000 RPM. Most will have an adjustable guard to keep the user safe, and allow for two handed operation. Angle grinders make use of large bearings to counter the side forces generated during cutting.

Angle grinders are commonly found in a range of settings from workshops and construction sites to auto garages and emergency rescue situations. Some common uses include grinding rust off of a metal object, cutting through metal or concrete, removing paint, and polishing a range of metal objects. They can also be used for cutting through bricks, tile, and removing excess mortar.

Choosing An Angle Grinder

People new to using angle grinders are often lost when it comes time to purchase one because of the range of sizes available. A general rule of thumb is that the bigger the grinding disc, the better it will be for larger jobs. The smaller the disc, the easier it will be to control. When you see a grinder labeled as a 4.5-inch grinder, the manufacturer is referring to the disc size it accepts and not the length of the machine. If you are a homeowner that uses an angle grinder for periodic work around the house, then a 4.5-inch grinder should suffice. On the other hand, if you are a contractor who often needs to cut through large beams for deck work, a larger grinder would be a better choice.

The thickness of the material being cut should also come into consideration when picking an angle grinder. The measurement the manufacturer quotes is the diameter of the disc. This means and 4.5-inch angle grinder can only cut through materials that are 2 inches thick or less.

More often than not, smaller grinders will spin at higher speeds than larger grinders, but this is not a hard and fast rule so it always pays to check and understand the amp rating of the motor too. The more amps the motor has, the faster it will be. One must also take into account that a machine with a larger disc needs more amps to spin the disc at the same speed as a machine with a smaller disc.

This means that a 7-inch grinder with a 13 amp motor is going to spin at roughly the same speed as a 4.5-inch grinder with a 7 amp motor. The faster a grinder spins, the more susceptible it is to overheating, so it is a good idea to choose a model that has adjustable speed settings. This way you can set the motor to spin at the exact speed needed, with less worry about it overheating.

How To Use An Angle Grinder Safely

Angle grinders are an extremely useful tool, but they can also be very dangerous if used incorrectly. For this reason, it is important to follow a few safety tips. The three most common causes of injury when using an angle grinder are metal particles getting lodged in the operator's eye, kickback from the spinning force of the disc, and the disc shattering or exploding.

To reduce the chance of experiencing any of these injuries one must take the necessary precautions. First and foremost, operators should always wear safety goggles when using an angle grinder. Since angle grinders create a lot of dust when grinding, it is also a good idea to wear a dust mask, and work in a well ventilated area if possible. Wearing work gloves is also a smart idea as this offers your hands one more layer of protection against abrasion or cuts.

If you are unfamiliar with using an angle grinder, start your grinder on the lowest speed setting and do a few practice cuts or small grinding on an excess piece of material before working on your project. This will allow you to get a feel for the machine. As you get comfortable with the amount of kickback, you can increase the speed. Not only will working in this manner make it safer, it will also reduce the chance of making a mistake on the final project.

To reduce the possibility of the grinding wheel exploding, make sure the disc speed limit is higher than the angle grinder speed. If one uses a disc rated for 6,000 RPM on a grinder set to rotate at 10,000 RPM, there is a high possibility of the disc shattering as it overheats.

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Last updated on May 27, 2018 by Christopher Thomas

A traveling chef, musician, and student of the English language, Chris can be found promoting facts and perfect copy around the globe, from dense urban centers to remote mountaintops. In his free time he revels in dispelling pseudoscience, while at night he dreams of modern technology, world peace, and the Oxford comma.

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