Angle grinders are some of the most versatile tools you’ll find around you. From cutting metals like a saw or saw blade, to stone polisher and removing car paint – the uses for grinders are pretty much endless.
Since there are numerous varieties of this powerful tool on the market, choosing the best angle grinder can pose quite a challenge. Let us guide you through the do’s and don’ts of buying in a couple of minutes so that you can pick the right one for you.
Different Types of Electric Angle Grinders
Angle grinders can be divided into four major types. These are:
Most angle grinders in the market are electric angle grinders. They are powered by a motor housed in the casing the tool, with a power cord connecting it to the mains power.
Because of this cord, the range of the grinder also becomes somewhat limited. It comes with great power though, such as the best angle grinder for concrete that can work on masonry.
These angle grinders work on the same basis as electric ones, except for the fact that they don’t need the mains power, and get their juice from a battery, usually, lithium-ion-powered, housed within the casing of the tool. As a result, these are very portable, and best suited for outdoor works.
However, the best cordless angle grinder can also be a little low on the power compared to their electric counterparts.
These angle grinders are powered by compressed air. These grinding saws are more suited to factories as well as for commercial use.
Another type of angle grinders that is mostly used for industrial and commercial purposes, petrol powered grinders are usually large in size, but also portable as they get their power by burning through petrol.
Such an impact driver usually uses a higher volt and can cover tasks ranging from the screwdriver to a circular or rotary saw and drilling.
Our Two Favorites best hand-held angle grinder
DeWalt DW840 7-Inch Medium Angle Grinder
The DW840 7-Inch Medium Angle Grinder from DeWalt is perhaps the best 7-inch angle grinder in the market. This multi-tool has a no-tool guard adjustment procedure to go with a huge 13 Amp, 8,000 RPM motor.
With its great power comes great durability as well, supported by roller bearings. Compatible with both AC and DC sources, you cannot go wrong with this angle grinder. It is by far one of the high-quality angle grinders for welding, as well grinding and other functions on the market now.
Makita 9557PBX1 4-1/2-Inch Angle Grinder with Aluminum Case
The 9557PBX1 4-1/2-Inch Angle Grinder with Aluminum Case from Makita is our best pick for 4.5-inch grinders in the marker. It is powered by a 7.5 Amp motor, but still lightweight enough at only 4.5 pounds.
Its labyrinth design also deters debris and dust from its circular saw and gives your tool a longer life to make it one of the best hand-held angle grinders for concrete or metalwork.
Angle Grinder Buying Guide
The Right Sized Discs
Angle grinders come in all sizes and shapes as far as discs, wheel, or heads are concerned. The most common sizes are the 4.5-inch grinders, the 7-inch angle grinder, and the 9-inch ones. Make sure you are buying the right sized ones for you by figuring out beforehand the tasks you will be performing with the grinder.
The higher the wattage, the more powerful is your grinder. Also, bigger grinders like 7-inch or 9-inch ones require more power, while even the cordless angle grinder comes with lesser power.
This refers to the speed your angle grinder will be made before it actually starts cutting or grinding. The higher the no-load RPM, the finer your grinding or cutting would be.
Spindle locks make it easier to remove discs without using any tool. This is particularly helpful is do a number of different tasks with your tool, like grinding, sharpening, sanding, cutting, etc.
A very useful feature for any angle grinder, side handles are auxiliary handles that can be attached to the sides of a grinder. This comes in handy when you’re grinding in steep corners or hard to access surfaces.
Single or Variable Speed
Single speed angle grinders are better when you usually do the same sort of tasks, like grinding on metal surfaces, sanding steel sheets, etc. Variable speed, on the other hand, is useful when you work on various surfaces as well as perform drastically different tasks.
A major concern of many tradesmen is the weight of the angle grinder. Since it is a tool that you will likely be holding in your hands all through the task, it makes sense that the lighter the tool, the better, right?
Since electrical angle grinders come with cords, their length is a major buying factor. Either the cord should be quite long, or there should be adequate provisions for applying for cord extensions.
Going Without The Wire
Should you buy a cordless angle grinder or a corded one? If much of your work is done outdoors, then a cordless grinder may be your best friend. Though they may lack somewhat in power, they more than make it up with their portability and ease of use.
Benefits of Using a Corded Angle Grinder
Using the top angle grinder can be immensely helpful because of their multidimensional use. These include:
Angle grinders can cut through metal sheets, bars, or rods with ease. All you need is the right cutting head and you are good to go.
Polishing, or sanding, planer, by whatever name you call it, another wonderful application of angle grinders is polishing metals to make it smoother. Many people will be amazed to learn that their car was polished using a tool as simple as an angle grinder.
As the name itself suggests, grinding is perhaps the most common use of these grinders. The angle grinder for concrete can be used on stones, brick, concrete, metal, or pretty much any abrasive surface.
Removing rust, paint, or even hard-to-remove dirt is also another pretty useful function of an angle grinder.
Frequently Asked Question
What size grinder should I buy?
While there are numerous sizes of grinders available, you should buy the one that serves your purpose the best. While bigger size usually means precision and faster task rate, smaller ones are perfectly suitable for household work and DIY projects.
What kind of discs should I buy?
There are hundreds of different sized discs available in the market, such as the angle grinder for welding, cutting, sanding, and so on. You should decide what you are going to do with your grinder first, and buy the discs accordingly.
Do I need a cordless grinder or one with a cord?
Cordless grinders are most suitable for outdoor projects and come with relatively low power. Corded ones are usually more powerful, and used for indoor tasks.
Does brand name matter for grinders?
Definitely. Branded grinders are usually more trustworthy, and the suitable discs and heads are widely available in the market. It is not to say that relatively lesser known brands are bad, but brands deliver on their brand value more often than not.
Can I use my grinder for multiple tasks like cutting, grinding, polishing, and so on?
Yes, of course. But make sure your corded angle grinder comes with removable and adjustable head system to fit different discs for different jobs.
Best Angle Grinder Reviews in 2018
1. DEWALT DWE402K 4-1/2-Inch 11-Amp Angle Grinder Kit
Our first pick for the angle grinder is the versatile DWE402K 4-1/2″ 11amp Angle Grinder Paddle Kit from DeWalt. It is powered by an 1100 RPM AC/DC motor (11 Amp) that is equipped with a dust rejection and swifter material removal systems. Its convenient gear case will give you access to the tightest of spaces.
The wheel comes with a quick-release mechanism to help you remove it without wrenches. As far as angle grinder for welding is concerned, this is an all-around choice for you.
- 4.5” grinder
- The guard can be rotated 360 degrees from a one-touch system
- Safety lock-off feature of the paddle switch secures you from accidentally starting it up
- Dust ejection system helps to get rid of debris and dust particles
- Can be used in tight spaces
- Higher overload protection
- Does not come with a three-prong plug
- A bit heavy for its size
2. Makita 9565CV 5-Inch Variable Speed Angle Grinder
If you want a long-lasting grinder for polishing and grinding, particularly for stone and similar surfaces, then the 9565CV 5-Inch Variable Speed Angle Grinder from Makita is the one for you.
The best thing about it is the variable speeds as well as the speed control feature for maintaining speed under quite the load.
- 5-inch grinder
- Wheel binding protection provided by Makita’s patented Super Joint System
- 12 AMP powerful motor
- Soft start feature
- Prevents debris and dust using labyrinth seals
- Carbon brushed materials ensure longer life
- Noise can be an issue
- A bit heavy to hold and operate
3. PORTER-CABLE PC60TAG 6.0-Amp 4-1/2-Inch Angle Grinder
The 4.5” PORTER-CABLE PC60TAG 6.0-Amp 4-1/2-Inch Angle Grinder is a great angle grinder for everyday use. With a 6 Amp motor, it operates at 11,000 RPM to get yours through your tasks with ease.
There’s also a side handle compatible with 3 different positions for better control while operating in different positions.
- 4.5-inch angle grinder
- Lock-on slide switch
- Side handles for better grip
- Wheel and wrench included
- Durable 6-Amp motor
- Cannot utilize cut-off discs
- Thick grinding discs are difficult to use
4. Makita 9557PBX1 4-1/2-Inch Angle Grinder
The 9557PBX1 4-1/2-Inch Angle Grinder with Aluminum Case from Makita is a 4.5-inch tool that packs a strong 7.5 Amp motor is a pretty lightweight machine. It weighs only 4.5 pounds and comes with a comfortable grip design.
As with other Makita grinders, its labyrinth construction architecture helps you to avoid dust and debris and ensures longer product life.
- 4.5-inch grinder
- 7.5 Amp motor
- Labyrinth construction design to avoid dust and debris
- Paddle switch is large in size and easy to operate
- Supports both AC and DC power sources
- Paddle switch can take a little time to get used to
- The case is not very sturdy
5. Hitachi G12SR4
Hitachi is reputed for its electronic products, and its G12SR4 grinder is no different. This 4.5-inch grinder is powered by a 6.2 Amp motor that can work through hard grinding jobs with ease.
The best feature of this tool is perhaps it is spindle lock that makes swapping discs and accessories a piece of cake.
- 4.5inch grinder with 6.2 Amp motor
- Spindle lock
- Lock-on trigger for safe, continuous operation
- Weighs only 4 pounds
- Designed for both right and left-handed users
- The handle can be a bit too large for some people
- Since there’s no filter, grinder dust can blow everywhere
6. DEWALT DW840 7-Inch Medium Angle Grinder
The DW840 7-Inch Medium Angle Grinder from DeWalt is a beast of a machine that comes with a 13 Amp motor behind a 7-inch grinder. With a guard adjustment feature that requires no tool, this best 7-inch angle grinder will increase your productivity manifold and save you from fatigue.
The rear handle is designed to give you more comfort, while the bearings will ensure a larger tool life.
- Plastic and metal build
- 7-inch grinding tool
- Supports both AC and DC power sources
- 13 Amp, 8000 RPM motor
- Adjustable guard requires no key
- Roller bearings ensure longer tool life
- The tool can overheat on rare occasions
- No case or bag included
7. Bosch 1375A
With a powerful 6 Amp, 11000 RPM motor, the Bosch 1375A is a class apart from most 4.5-inch angle grinder in its league. It is designed for both grinding and cutting operations, with a slide switch that keeps it on for extended operation.
With all its utilities, the two-position side handle ensures comfort too!
- 6-Amp, 11000 RPM motor
- Field windings coated with epoxy protects from abrasive dust
- Side handle supports two positions
- Patented Service Minder system stops tool in case any maintenance is required
- Can be a bit too heavy to hold and operate
- No variable speed setting
8. Black And Decker 7750
The Black & Decker 7750 is a 4.5-inch grinder that can be used for a number of tasks, including grinding, cutting, sharpening, and whatnot.
With a side handle compatible with 3 positions, a 6 AMP, 10,000 RPM motor, and a metal gear case, you can expect the same long life and durability from Black & Decker that you’ve known to trust.
- 4.5-inch grinder
- 6 Amp, 10,000 RPM motor
- Metal gear case included
- Side handle compatible with 3 positions
- Long, durable life
- Key for tightening blades can bend easily
- The on-off switch can get stuck at times
9. Porter-Cable PC60TAG
Porter is a trusted name when it comes to angle grinders. Its Porter-Cable PC60TAG is a great pick if you’re looking for a 4.5-inch grinder.
It is powered by a 6 Amp, 11,000 RPM motor, along with wide standard market features like lock-on slide switch, side handle with 3-positions, as well as a guard change system that requires no extra tool.
- Powerful, 11,000 RPM motor
- Side handle can support 3 positions
- 6-ft cord included
- Comes with spindle lock
- Fast material removal
- No variable speed feature
- No case included
10. Makita 9557PBX1
If you’re looking for a 4.5-inch grinder that is also a powerhouse, then look no further than the Makita 9557PBX1. Its 7.5 Amp powerful motor weighs only 4.5 pounds but can power through almost any task with ease.
Its labyrinth design also helps detract debris and dust to give your tool a longer operational life.
- Powerful 4.5-inch grinder
- Supports both AC and DC power sources
- Zigzag varnish on armature protects from debris damage
- Supports continuous operation with locked on-off feature
- Paddle switch is pretty big for easy operation
- Case included
- A bit pricey compared to other similar grinders
- The case can rust pretty soon
As for our recommendations, the DW840 7-Inch Medium Angle Grinder from DeWalt is hard to beat when it comes to the best corded 7-inch angle grinder.
It is durable, powered by a huge 13 Amp, 8,000 RPM motor, as well as a no-tool guard adjustment procedure.
The Makita 9557PBX1 4-1/2-Inch Angle Grinder with Aluminum Case is our pick for 4.5-inch grinders with a lightweight design at 4.5 pounds of weight, yet housing a 7.5 Amp motor. Its labyrinth design also deters debris and dust and gives your angle grinder a longer life.
Angle grinders are some of the most useful tools for any handyman, professional, or even DIY enthusiasts.
If you are looking to buy the best angle grinder, choose one from our list, and we assure that you won’t be disappointed.