Top-5 best angle grinders 2020

What is the best angle grinder?

A state-of-the-art angle grinder should become the number one tool among others in a tool set of a skillful craftsman or a contractor. It is proved by a high versatility as it can be used for numerous tasks. They include cutting at any angle, grinding, sanding and polishing of various materials.

The advanced options can be fitted with multiple common accessories, which together with a powerful motor can deliver speed up to 11000 RPM, making this tool suitable for a vast variety of applications.

Besides, the good angle grinder ensures total safety of an operator which uses it with no fatigue at all. Thus, the MAKITA XAG16Z is in the forefront of my considerations when looking for the best angle grinder.

Why have I chosen this model? Firstly, I love the opportunity of its mobility and freedom from any cords that can be really annoying during operation. It comes with 18V lithium-ion batteries that proved their reliability even for the continuous operations. This model features a brushless motor which enhances the efficiency and stability of operation as well as contributes to longer service life of the tool, in general.

One of the most distinguished features of the MAKITA XAG16Z is its variable speed control function which is an outstanding one among other cordless counterparts. Due to this feature it can be adjusted from 3000 up to 85000 RPM, depending on the application, enhancing the accuracy and the overall quality of you works.

I like its safety features which consist of anti-feedback technology, soft start function and electronic protection system designed for control of the correct motor functioning and optimization of battery energy use.

Types of the angle grinders

Corded

Corded models are run by the standard residential 120 V power outlet. Typically they are more powerful, but also bigger and heavier in comparison with the cordless models. The main advantage of the corded angle grinders is in their power capacity. That is they deliver enough power for any project, including the heavy-duty applications. Besides they are offered at comparatively affordable prices with a wide power range options. The DEWALT DWE402 features enough power and reliability to be considered first among other corded options.

The downside of application of the corded angle grinders is that your mobility during operation will be restricted by necessity to connect them to the power outlet. Surely, you can use an extension cord, but still it is not endless. It will constantly get in the way during operation thus endangering safety of an operator. Besides, there is a risk of its damage by the accessories used during the process.

Cordless

Cordless angle grinders are free from any cords, but still their runtime is restricted by the life of the battery which should be recharged periodically. The MAKITA XAG16Z is a bright example of the most advanced and high-performance cordless options available on the market.

Find the in-depth review of the best cordless angle grinders, and the features to be considered when looking for a battery-powered model here.

Pneumatic

The pneumatic angle grinders are lightweight options which run by an air compressor. Pneumatic models are commonly used in the metal-working industry. Also they will be indispensable at the job sites with a high humidity and for the most heavy-duty applications.

As the compressed air is the power source here, such angle grinders shall be connected to a pneumatic pipeline or a compressor of an appropriate capacity, depending on a type of your application.

The main advantage of the pneumatic models is that they are capable to operate under the conditions of an increased humidity with no risk to safety. Besides, the risk of their overheating is reduced to the minimum, even in case of an intensive or a heavy-duty operation. This is the best type for contractors who already operate various pneumatic tools, as it will help them to provide a sufficient workload for the compressor they use.

Features to be considered when looking for an angle grinder | Buyer's Guide

Motor power

The input power of a standard angle grinder is between 110 and 230 volts. The rated output power of these tools varies from 650 up to 2700 W and depends on a disk diameter to be used. Accordingly, the angle grinders with bigger diameter disks are equipped with more powerful motors. The latter provide enough force at the cutting edge to process effectively a workpiece.

Hence, the power ratings of your angle grinder should be selected considering the jobs you are going to fulfill mostly. If, let’s say, you are going to deal with heavy-duty tasks like metal cutting, you need to pick up a tool which delivers plenty of power. However, you should be ready to pay extra for this.

Rotation speed

The rotation speed of the angle grinder depends on the diameter of a disk; the bigger the attached disk, the slower the tool. The speed of the angle grinders is measured in RPM, or rotations per minute. It can be in the range from 5,000 to 13,000 RPM.

However, faster speeds can be effective and destructive at the same time. You should always set the right speed for the materials to be processed, by consulting the manuals and recommendations of the manufacturers. Besides, skills and expertise of an operator would be no less crucial in obtaining the desired results.

Safety features

Most advanced angle grinders are offered with the features like soft start, restart protection and speed setting systems which contribute to convenience and safety of an operator.

• Slow Start. Even if you are going to work at high speed rates, it would be more preferable and safe to ramping it up slowly. A smooth start will enhance the durability of the tool in general, as it serves as a motor protection and anti-vibration feature, which is especially useful during long-run operations.
• Restart protection. During extended construction work there is a risk of a sudden power shutdown which can occur for various reasons. The restart protection feature eliminates the risk of an unintended start when the power supply is back. As usually an operator would leave the tool aside, without checking the position of the switch. Such protection will also prevent the grinder from restarting if it gets overheated. The angle grinders with such function can be restarted only after trigger switching-off with further intended restart.
• Speed ​​setting. The speed can be varied with the help of the wheel located on the tool body. Cheap angle grinders are commonly offered without this feature. But as practice shows, this feature is very useful when tackling particular jobs which require higher accuracy in cutting or grinding. For instance, if you need to grind off any paintwork, an intensive rotation may lead to surface scorching.

Battery capacity (cordless models)

The battery is the most essential part of any cordless angle grinder. It can ensure a long runtime of your tool. For this reason, you should select those models with lithium-ion batteries. The tools with such batteries weigh less and can be operated longer than their counterparts. Besides, recharging time of the lithium-ion batteries is the shortest in comparison with other current options.

And pay attention that nowadays the majority of brands use the same batteries as the rest of other cordless tools from their range. So, if you have any tool of a particular manufacturer, you may exchange the same batteries from one tool to another.

Pressure and air flow (pneumatic models)

As the pneumatic angle grinders are powered by the compressed air, the question about its amount and pressure arises. In order to ensure a reliable operation of the pneumatic model during extended periods, the compressor which is capable to produce from 5 to 8 CFM at 90 PSI would be a right choice.

Best Angle Grinders

1. MAKITA XAG16Z

The Makita XAG16Z is 18V LXT® Lithium-Ion cordless angle grinder which is equipped with a brushless motor enhancing its efficiency and durability. It features a variable speed control making the tool highly versatile for multiple applications. This model will be successfully used for grinding and cutting of a wide range of the materials. The XAG16Z comes with an electric brake which stops rotation of the wheel in 2 seconds or less.

Makita 18V Lithium-Ion batteries boast the fastest recharging time in comparison with their counterparts on the market. This model features a protection system against overloading, over-discharging and overheating. For better versatility, the XAG16Z can be powered by Makita 18V LXT® and compact Lithium-Ion batteries with the Star symbol.

Makita Corporation was founded back in 1915 in Japan. It has been known as one of the leaders in the power tool industry and as one of the most innovative brand for many years. The company manufactures top-class tools, at competitive prices. Currently Makita manufactures more than 350 types of tools and more than 4500 accessories to them. The company has 8 production facilities, 3 of them are located in Europe.

Features

• Power source: Battery
• Wheel diameter (in): 5
• Blade speed max (RPM): 8500
• Weight (lbs): 5.7
• Dimensions (L x W x H) (in): 7.9 x 13.9 x 5.4

Pros: Reliable motor Variable speed Versatile Lightweight Integrated protection system Electronic brake system

Cons: Battery life is not enough for an extended runtime Battery and charger are sold separately Quite expensive

This battery-powered angle grinder can be really distinguished from other cordless models in its class by its variable speed control. This portable but still powerful tool is a must for outside grinding and cutting jobs or at the locations with no power source.

2. DEWALT D28499X

The history of the Dewalt brand started back in 1923. Nowadays the company is considered to be one of the best in manufacturing power tools on the international market. The latter are highly demanded on the market due to their durability, performance and user-friendliness.

The DeWalt D28499X is a large and heavy-duty angle grinder which suit any professional-grade grinding or cutting jobs. Its 5.3 HP, motor delivers 6,000 RPM with an overload protection, thus ensuring a smooth operation and a high accuracy during its use. The 7- and 9-inch guards of this model can be easily and quickly adjusted without use of additional tools.

The tool is comparably lightweight, featuring a rotating rear handle, and five-position side handle for improved ergonomics and better control and convenience.

Besides this angle grinder comes with an epoxy-coated field and armature to exclude the risk of the tool damaging during the extended heavy-duty jobs. It also features an automatic turn-off function and a two-wire insulated "S" jacket rubber cord for longer service life under any weather conditions.

Features

• Power source: Electric
• Wheel diameter (in): 9
• Blade speed max (RPM): 6000
• Weight (lbs): 16.4
• Dimensions (L x W x H) (in): 10.13 x 24.25 x 5.06

Pros: Powerful Large Ergonomic Durable Tool-free wheel guard adjustment

Cons: Dual voltage system is required Lack of speed rate control

I recommend this high-performance and advanced model for heavy-duty applications rather than simple and occasional DIY projects.

3. DEWALT DWE402

Next Dewalt model, which is, to my mind, worth looking at, comes with a 11 Amp AC / DC motor which is capable to deliver 11,000 RPM. Its oversized brushes provide 2X brush life in comparison with its predecessor, the D28402 model. This angle grinder is also features an auto-off brush function which shuts the tool down when the brushes are getting worn out to avoid tool damage. Its large spiral bevel gear contributes to longer transmission service.

This model is equipped with a guard allowing its 360 degree rotation with ease. Besides, due to the special tool free system, the wheel may be removed or installed without any additional wrench.

The DWE402 comes with a dust ejection system which enhances durability of the tool by blowing out dust and debris that come inside. This model is designed for safety as it features also a paddle switch with a lock-off to prevent any risk of an unintended start-up.

In general, the design of this angle grinder allows the best convenience of use due to its small gripping surface and handle.

Features

• Power source: Electric
• Wheel diameter (in): 4-½
• Blade speed max (RPM): 11000
• Weight (lbs): 6
• Dimensions (L x W x H) (in): 15.6 x 5.9 x 4.8

Pros: Powerful Ergonomic Dust ejection system Auto-off function Lock-off switch to prevent a sudden start-up

Cons: No variable speed control Could be hard to handle in protective gloves due to its compact size

The DeWalt DWE402 is an impressively powerful and durable angle grinder which will handle any challenging task with a high precision. However, I would recommend it to skilled operators only, as it lacks the torque and variable speed control function which are indispensable features, especially for beginners not to experience any over-grinding.

4. PORTER-CABLE PCC761B

The Porter-Cable company was established back in 1906 in the US as a manufacturer of power tools. Nowadays, the company is a part of Stanley Black and Decker. The Porter Cable tools are considered as intermediate and affordable options between residential and professional-grade.

The PORTER CABLE PCC761B is a cordless angle grinder, powered by 20v Lithium-Ion battery. Its powerful motor delivers 8500 RPM which is suitable for grinding, cleaning and cutting. Its solid metal gear housing prevents overheating during extended operation.

This model comes with a spindle lock allowing wheel changes with ease. The adjustments of the guard will not evoke any problems as it can be done without any additional tool. It, also, features 3-position side handle designed for better control of the tool.

Features

• Power source: Battery
• Wheel diameter (in): 4-½
• Blade speed max (RPM): 8500
• Weight (lbs): 6.2
• Dimensions (L x W x H) (in): 15.3 x 6 x 6

Pros: Solid design Tool-free adjustments Ergonomic handle So simple guard adjustment. Affordable price

Cons: Batteries and charger have to be purchased separately Batteries run out quickly

The Porter Cable PCC761B is an awesome cordless angle grinder at an affordable price. It comes with the majority of the advanced useful features to obtain the desired result at most job sites wheresoever, as there is no restrictions related to power source availability.

5. BOSCH 1375A

The Bosch Group is one of the leading suppliers of technology and services worldwide. Currently the company runs more than 350 subsidiaries and affiliates in more than 60 countries. The Bosch products are successfully distributed in more than 150 countries.

The corded Bosch 1375A is lightweight and user-friendly angle grinder which will be handy for multiple applications including grinding and cutting on a daily basis.

The angle grinder features a 6.0 amp motor which produces 11000 RPM under no load conditions. This model also features a variable spindle works which can be adjusted from 5/8 to 11 inches for most common accessories to be installed.

Its 2-position side handle is designed to enhance the comfort of operation of a user.; The top handle of the tool is also small and ergonomic.

Besides, the 1375A features an epoxy coated body which protects the tool from damaging dust and debris.

Features

• Power source: Electric corded
• Wheel diameter (in): 4-½ "
• Blade speed max (RPM): 11000
• Weight (lbs): 3.8
• Dimensions (L x W x H) (in): 14.4 x 5.2 x 5.2

Pros: Lightweight Ergonomic Durable Lock-on switch Affordable price

Cons: Lack of variable speed control Less powerful than the counterparts in its class

The Bosch 1375A is an ergonomic and lightweight model designed for convenience of an operator. Although it features less powerful motor, the Bosch 1375A delivers enough cutting power to meet your DIY needs at a very affordable price.

Trusted Brands

DeWalt is the US highly recognizable brand of power tools. The company has deserved its reputation as a reliable manufacturer of tools and accessories which are preferred by many professionals even for the toughest jobsite conditions. In particular, the company manufactures professional-grade grinders designed for creation of smoothest surfaces of multiple materials like wood, metal and plastics.

Makita is a Japanese brand of tools which are popular for professional and residential applications. They offer a wide range of high quality grinding tools for any budget. Besides, the company is well-known as a manufacturer of grinding accessories like disks, belts, brushes, abrasive paper and various tips for finishing polishing.

Ryobi is another Japanese manufacturer of a wide range of comparatively affordable corded and battery-powered tools for indoor and outdoor applications. Their products are highly demanded worldwide due to the quality and performance. The company produces several types of grinding tools with the innovative solutions in each of them.

Milwaukee is the US based brand which belongs to Techtronic Industries, along with AEG, Ryobi, Hoover, Dirt Devil, and Vax. The company manufactures corded and cordless power tools and accessories which can be found worldwide. Thus, they offer the advanced angle grinders with the specific solutions which allow using the tools in multiple spheres of application, successfully tackling any even the most heavy-duty tasks.

Porter-Cable was originated in the US in the early 1900's. They were the pioneers in manufacturing of tools like the portable electric power sander and later they introduced the compact circular saw on the market. Nowadays the company is owned by Stanley Black and Decker, Inc. as the division offering budget but reliable options for household and DIY purposes.

Bosch Power Tools is a German brand and one of the world's leading suppliers of cordless and corded power and measuring tools and accessories. With over 125 years of experience they are still one of the most trusted manufacturers of tools which are capable to outperform any competitive tools. Their products are proved to be highly reliable, safe and convenient in use.

Metabo GmbH is another German brand of the world trusted power tools and accessories. They are highly demanded due to their robustness and safety. Thus, the company’s tools are designed mainly for professional and industrial-grade use. Metabo power tools include grinders, polishers, saws, drills and woodworking tools which ensure high quality solutions for every application.

FAQ

What can I do with an angle grinder?
With the use of different wheels attached to the angle grinder, you can grind, cut, sand and polish various materials. It is capable to tackle even the most challenging tasks like processing ferrous and non-ferrous metals and their alloys, natural and artificial stone, concrete and bricks, etc.

What is the best angle grinder wheel for cutting metal & for concrete?
Grit discs are the commonly used options for metal cutting. They are thinner in comparison with other grinding discs. But the thinnest disks are designed to cut the soft metal only; otherwise a high risk of injury appears. There are grit disks suitable for cutting ferrous metals, stainless steel and non-ferrous metals. However, it is better to use a grit disk designed for a specific material.

Diamond discs are versatile and more advance options in comparison with the above mentioned. This type of accessory is suitable for cutting concrete, tile, and marble, including ferrous and non-ferrous metals. Such cutting blades are quite expensive but demonstrate high-performance at the same time. It is recommended to use such disks when cutting reinforced concrete, as they can handle the rebar and nails. Besides, as the practice shows, they are safer to use.

How to remove an angle grinder disk?
Typically the angle grinders come with the manuals with the specification of the disk removal procedure.
The following steps should be followed to remove a disk safely:

1. Disconnect the power. If you deal with a cordless model, remove the battery pack from the tool.
2. Press a side lock-on button to hold the disk in place.
3. With the help of a spanner wrench (which is typically in the scope of supply) unscrew a nut and loosen the disk. You should spin the spanner in the direction of disk rotation.
4. Remove the disk to be replaced.
5. Install a new disk manually or with the help of the same spanner.

How to use an angle grinder safely?

You should not forget about safety precautions while working with an angle grinder. That is why I’ve prepared a list of the safety rules to be followed during operation of your angle grinder.

1. Always wear safety goggles and ear plugs or use a protective shield.
2. Use the wheels of the suitable size and type when processing a particular material.
3. Use the tool only for the purposes according to its specifications specified in the manual.
4. Light and small workpieces should be clamped or secured.
5. It's better to hold the angle grinder from the side, thus preventing any injury due to a possible kickback of the tool during operation.
6. It is forbidden to be in the close proximity to a disk blade as it is the most dangerous and not covered area.

The tool will serve you long with no risks to personal safety, if you follow the above mentioned recommendations.

What is an angle grinder?

Grinding and polishing are highly applicable during processing of internal and external surfaces of various workpieces of different shapes and materials. Such operations usually result in obtaining the smooth surfaces with a low roughness. An angle grinder with the suitable disc can replace multiple tools and tackle the most fatiguing, labor intensive jobs in a quicker and easier manner. That is why, such grinders are the main tools obligatory used to succeed in those projects. Besides, it can be used for cutting and other applications about which you will learn a bit later in this article.

The main accessory of this tool is a wheel attached to the tool body at a right angle and rotating on a spindle shaft at high rates of speed. Primarily this tool is designed for grinding and cleaning of surfaces, rather than smoothing. However if, for instance, the angle grinder is equipped with a cutting disk, it will be capable to cut such hard materials like rebar, angles, pipes and hollow sections.

Thus, the angle grinder is a convenient and versatile tool which is widely used both at the large production facilities and at the home workshops for smaller DIY jobs.

If you continue to read this guide, you will learn about main features, principles of operation and specifications of the angle grinders. In this regard you will be able to select the right option, among the widest range offered on the market, satisfying your needs to the utmost.