5 Best Grinders On Market [ 2021 Edition ]

When executing DIY or other tasks, going to the grinder is always necessary; hence you have to choose a model that you can turn on quickly, that is to say, that it has a simple operation. On the other hand, it should be light so that you can easily manipulate it manually and, of course, have an adequate power level for the tasks in which you use it. In the same way, you can do the change of pieces in a simple form with the best grinders on Amazon.

Thus, after reviewing many models, opinions, and following advice from those who know these devices, we have the Bosch GWS 22-230 JH model. It is indicated in these cases, with its power of 2200 W, the level of ergonomics that allows comfortable handling, the ability to change parts quickly, and its high range of adaptation to spaces and surfaces. As an alternative, we find another model, which also has outstanding features, called Makita GA5030,  with a speed of 11000 rpm and a weight of 1.8 kg, which allows more comfortable handling.

Our Editor Choice's



Key Features


Toolman Variable Speed Angle
  • Grinding speed: 11500 RPM

  • 5/8"-11 spindle thread

  • Grinding speed: 11500 RPM

Toolman 4.5'' 5.6A 11500BPM
  • High performance motor

  • 6 variable speed

  • 5.6A Angle Grinder

MANUSAGE 7-Amp Angle
  • POWERFUL - 7Amp motor

  • POWERFUL - 7Amp motor


DEWALT Angle Grinder Tool

  • 8,000 rpm motor

  • Rear handle design

 Bosch GWS13-50VSP 5 In
  • Paddle switch 

  • CUSHIONED interior

  • Variable-speed setting - 2,800 rpm to 11,500 rpm 

What are the best grinders on Market of 2020?

DIY lovers and professionals from different areas know that grinder is a fundamental tool in our workshops and homes. They are very versatile tools thanks to the variety of discs and accessories available that extend their functions and allow them to perform tasks as diverse as cutting materials, sharpening tools, and sanding or stripping surfaces.

But there are so many brands and models that it seems impossible to decide which one is the most appropriate for us. That is why we have prepared this guide to buy the best grinders on Amazon in the current market. The idea is that you can make an excellent comparison of grinders and finally choose a good and economical one.

The first thing is to think about our own needs. It is not necessary to make an excessive expense if we need a small and straightforward grinder, but if we have a professional workshop, we cannot settle for a grinder that does not meet the demands of the job. Even if you need a very professional grinder, you will find different prices, so we recommend that before asking how much the grinder costs, be clear about all the functions you need the device to do.

For people who are fond of DIY, a grinder is a handy power tool when performing the vast majority of household repairs because it allows you to precisely cut, sand, and polish all types of materials. If you are looking to purchase one, check out these practical and recommended models.

Rank #1: Bosch GWS 22-230 JH

It is an angle grinder that has high power, while a soft start. In addition, it is able to achieve rapid performance and can even be used in long working hours, this without forcing the engine to work, reasons that attract buyers for its acquisition.

Main Features Explained


An opposing team is one capable of adapting to any workspace or situation, without causing any complications for both the person who is using it and its expected excellent performance. In the case of Bosch grinders, they first provide a level of resistance focused on their external structure, due to their robustness and alloy of materials, such as high-density plastic and aluminum both in the handle and in the main gear respectively.

Now, referring to the internal part of the equipment, it has a protection system, in which the coals are self-disconnected. In addition, it has vents, thus avoiding overheating, all with the purpose of protecting the well-being and useful life of the heart of the grinder, the engine.


The issue of safety is vital and more so if it is a device that exerts high precision cuts, taking into account that when handling it we are exposed to some type of accident, either by not knowing how to handle the instrument well or only by not using the safety accessories that, although for some users are usually a bit tedious to use, in the long run, they are imperative for the purpose of guaranteeing safety.

As for this equipment incorporated in the range of grinders, it has an easy control switch for switching on and off, so even if it is connected to the power source, there is nothing to worry about since the starter can be manipulated your convenience It also incorporates a protective helmet made of aluminum, the same in case of some torsion. The recommendation will always be to check the instruction manual in order to know the whole operation of the grinder, thus avoiding any unexpected event.


As everyone should know, energy is a weight indicator to evaluate the performance of any type of equipment. Therefore, it will always be recommended to take into account the use that will be granted to the device prior to your choice, since this will depend on what amount of watts is required for the best performance of the job.

For its part, this model belonging to the high range of grinders has an electrical power of 2200 watts that is combined with 240 volts to give rise to an ideal force volume to fulfill a wide range of tasks, thus offering excellent performance. Results expected by any user that has among its primary purchase references, the Bosch GWS 22-230 JH.



  • This design offers great versatility in terms of adaptation to any environment, thanks to its excellent level of resistance.


  • In the opinion of some of the buyers, the dimensions destined for the cable are insufficient for the mobilization of the equipment at the time of performing some work.

Rank #2: Makita GA5030

Grinders are versatile tools, which can be used both for polishing and roughing materials and for cleaning them.

Although for this, it is necessary to have great products, with excellent performance and that accept different types of parts, being easy to change.

As a sample of the market, we find the Makita GA5030 model, which offers a high-tech motor with a power of 720 watts, capable of rotating the disk up to 11,000 revolutions per minute, so that you can have enough capacity for all types of work.

The double handle system allows you to be able to take maximum control over the disc, while the spindle and the adjustment system will enable you to change the disc and keep it fixed properly and with little effort so that you are more effective in everything you do



The 720 watts of this product generates a free spin level of up to 11,000 revolutions, being effective in all types of work.

Motor technology:

The double bearing technology located in the head area, together with its rubber protector, improves the life of the engine and generates a more stable movement.

Double handle:

The double hand, with one of them foldable to the desired angle, allows you to work more comfortably and safely.

Disk Size:

The disc offers a base measurement of 125 millimeters, so you can perform large-scale work with less effort.

Spindle system:

The spindle system, for which the corresponding key is incorporated, allows making disc changes quickly while keeping the fixed discs in position.



as some users mention, it is necessary to give some rest to prolonged periods of use to avoid excessive heat in the machine mechanism.

Rank #3: Black & Decker CD115QS

 Another brand that, of course, also arises when you are looking for the best grinders on amazon is Black & Decker. The CD115QS model has 710 W of power with an unloaded speed of 10,000 rpm, a 115 mm diameter disc for working in small spaces and an open two-position handle for better grip and control.

Although it is somewhat cumbersome and limited with its 2.4 kg of weight and 2 m of cable, it is ideal for simple DIY work or for use by beginners.

With the Black & Decker CD115QS grinder, you can work safely and comfortably thanks to the central locking and unlocking switch on its 14 mm shaft, which is easily accessible so you can change the accessory quickly. It also has a disc safety cover, which is easily adjustable, without tools, to the position you need.

Among the best brand of grinders, there is also the Black & Decker CD115QS, according to the recommendations of the users, so we will also show you its pros and cons.



It has 710 W of power so that its performance is adequate to work in a reasonable period of time and with various materials.


In addition to the main handle, it has an auxiliary handle for better control and balance when handling the machine.


The disc is 115 mm, so it is ideal for use in spaces of various sizes, regardless of whether it is narrow areas.


It can work comfortably at a considerable distance since the power cable is two meters long.


It incorporates its respective lock button that allows you to change the accessory faster and more efficiently.


Rank #4: Bosch GWS 7-125 Professional

 Among the best grinders on Amazon of 2020,  we can always count on a Bosch model. The GWS 7-125 is an angle grinder that stands out for: 720 W of power, 125 mm diameter disc with flat gear head to efficiently work narrow areas, ergonomic grip with easy-grip (176 mm) and just 1.9 Kg weight, characteristics that award it as the best quality grinder market price, apart from making it exceptionally comfortable to work, even for prolonged periods.

To ensure the protection of your robust motor, and consequently, a longer service life, the GWS 7-125 grinder from Bosch has ventilation spaces for optimum cooling, stator with extra protection and coals with auto disconnection.

In terms of safety, it has a controlled ignition switch and a protective cover with torsion insurance, made of resistant aluminum for the proper protection of the user, even when the disc is broken.

When looking for the best grinders on Amazon of the moment, you should look at the Bosch GWS 7-125 Professional model, which has a high reputation among user preferences. Here are its characteristics.



It offers the right level of strength and robustness since the gear head is made of aluminum, so you can work with this machine in any environment.

Useful life:

It has a long, estimated, helpful experience since the stator has an additional protection mechanism, and the coals have the function of self-disconnection for more excellent protection and duration of the engine.

Easy change:

So that you can work quickly and without complications, a button that locks the shaft is included, in order to make the change of accessories without problems.


It is a grinder with a high level of flexibility to different spaces and surfaces, thanks to the gear head are flat.


Its motor has a power of 720 W, an adequate quantity to offer excellent performance with the expected results.


Rank #5: Hitachi G13SR3

Another example of the best grinders on Amazon is the G13SR3 model of the Hitachi brand. This angle grinder works with 730 W of power and speed of 10,000 rpm and has a 12.5 cm diameter disc, retaining spindle with M14 thread and flat headgear so you can comfortably work the corners and narrow spaces of those DIY jobs that you like so much. It also has a sliding and lockable switch on one side of the tool.

It weighs 1.4 Kg and has a total length of 25.4 cm that makes it compact and lightweight with a modern design. Its high-performance motor has carbon brushes to prolong its life. Among the supplied accessories includes a side auxiliary handle, which is interchangeable in two positions with 15 degrees of inclination, and a tool to change the disc.

For those who wish to make a purchase according to a budget, we show you the pros and cons of the Hitachi G13SR3, which according to the opinion of the users, is the best grinders on amazon for 50 euros.



It has a 730 W power motor that offers a quality finish according to user expectations.


It can be used without difficulty in corners and narrow areas since its disc has a diameter of 12.5 centimeters.


The machine only weighs 1.4 kg, so it is quite light when using it, or if we need to take it from one place to another.


It has the right level of control and grip since, in addition to the main grip, it has a secondary for better user experience.



For some users, the fact that it does not incorporate a briefcase for proper storage is a negative aspect.

Rank #6: Skil 9005 AA

Another model of the Bosch Group that is presented as a good option for a better grinder is Skil 9005 AA. This is a compact mini grinder that is ideal for simple cutting and grinding applications. To do this, Skil 9005 AA has a power of 550 W and an empty speed of 11,000 rpm. It also has a 115 mm diameter disc with a maximum diameter of 22 mm shaft and a metal gearbox that provides easy access, even in tight spaces.

In terms of secure handling and safety for the user, the Skil 9005 AA mini grinder includes a lockable sliding switch and soft non-slip handle. It also allows shaft locking for changing accessories and includes an adjustable safety guard to block sparks that occur in this type of work.

In case you still don’t know which grinder to buy, then you should read the pros and cons of this model, which we will show you below.



It has the basic handle plus an additional one, which allows better handling of the device, in terms of balance and control.


It has its respective axis locking function to make accessory changes accurately and quickly.


It includes a non-slip switch to control the machine properly, even when wearing gloves.


It has a weight of 1.6 kg, so it is quite light, and there will be no problems when moving it or holding it for a long time.


The disc has a diameter of 115 mm, so it is possible to use the grinder in corners and narrow spaces.



Some users think that the equipment may not be very resistant to shocks or falls, but this will depend on the degree of care you have when using the machine.

Rank #7: Brüder Mannesmann M 1216-EWS

Among the best cheap grinders, we can find the M 1216-EWS model of the German brand Brüder Mannesmann. This mini angle grinder has a motor that works with 500 W of power and a 115 mm diameter disc that is suitable for polishing and polishing metals, sharpening cutting tools or cutting ceramics or other materials of low hardness and up to 11, 5 mm thick

Being a little power motor, it overheats quickly, so it is advisable to use it intermittently in short periods of time.

It has an additional handle that for convenience can be screwed to the right or left of the tool and an adjustable protector on the disc to prevent the user from being struck by sparks. It also has a safety slide switch and adequate shaft lock for accessory changes.

If you need to save at the time of making this purchase and you are looking for the cheapest grinders, the Brüder Mannesmann M 1216-EWS is a good option, that’s why we review its pros and cons.



It offers the right level of stability because it has the main handle and an auxiliary handle that helps to have better control to manipulate the device.


It incorporates a 500 W motor, which allows it to have acceptable performance when doing different jobs at home.


It can be used in narrow spaces without problems since the disc has a diameter of 115 mm, ideal to adapt to different areas.


It incorporates its respective activation button, which makes the use of this machine simple.



Users explain that after using this machine for a while, it starts to heat up, although this may vary from case to case.

Rank #8:


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How to use a grinder

First of all, we must say that it is a powerful tool for industrial and DIY use that allows polishing, cutting, and even devastating different materials. It has an integrated motor and a mechanism that will enable the integration of different disks, which will allow you to carry out various tasks, depending, of course, on the type of accessory you install.


There are currently several models of grinders in the market; however, within the options can be segmented into two broad groups: grinders and mini grinders. Basically, they differ from each other by the size they can have, by their power, the functions they bring, and by the diameter of the disks that can be incorporated.


The discs made of softer materials are used to polish and polish metals, while those of wires remove surpluses or reliefs of specific pieces. The rougher discs made up of grains of different sizes are often used to improve finials in metal parts or also to sharpen cutting tools such as knives and knives.


It is recommended to have comfortable and resistant safety gloves on hand to minimize the risk of deep cuts in fingers, hands, and arms. Also, transparent lenses and masks should be used, to avoid compromising the safety of your eyes and your face in general, since splashes, sparks or fragments of hazardous metals that jump everywhere are usually seen.


The guard should be placed verifying that it is well set and adjust its lever, depending on how you prefer; For safety, the grinder should not be used without its guard. Subsequently, the side handle should be fixed to the left or right, depending on whether the user is right or left-handed. Finally, the disc is placed centrally, and you secure it with the locknut. It is advisable to change frequently worn discs for new ones.

Precautions before use

The metal or object you wish to cut must be well fixed to the work surface or table; it is recommended to have an inclination of 30 degrees on the surface to wear or cut. You should never wear plastic clothing, or have nearby flammable material, to prevent combustion or fire when working. Make sure before starting the installation that the grinder is not connected to the power.

Precautions during use

You should not work the piece abruptly, always do it carefully, but without losing firmness, you must work continuously, generating adequate pressure on the machine, as well as, you must try to maintain a speed that matches the material you are using. When finished, wait for the disc to stop spinning to support it in a place with adequate leveling.

Maintenance and cleaning

You have to be very attentive so that no foreign body or material enters by mistake into the grinder; That is why you can clean your grinder with a small brush to remove excess dust or residue that is left after use. In the event of any failure or malfunction, we suggest contacting specialized personnel before disassembling it yourself to avoid further damage.

The most popular brands

Choosing a grinder is not an easy thing; there are too many options: some of the bank that is used more in workshops and others more practical for DIY. That is why we have compared the characteristics of some models with the comments of many users on the Internet, but as we know that the brand is an issue that we are all concerned about, this time we will briefly analyze the most important ones on the market, among which are Bosch, Makita, and Dewalt.

This limited liability company (GmbH) was born in Germany in 1886, and its name from 1937 until now has been Robert Bosch GmbH, in honor of its founder. Although it is a well-known brand internationally, it is worth remembering some data.

It is a multinational company with a presence mainly in three categories: appliances, tools, and spare parts for cars. In the automotive industry, Bosch produces spark plugs, lamps, filters, windshield wipers, brakes, batteries, among other elements.

As for tools for professional and home use, it manufactures drills, saws, sanders, electric hammers, screwdrivers, vacuum cleaners, grinders, and many other products. It is not difficult to find in any house a tool of this brand, well known to DIY lovers, who claim that it is durable and very functional devices.

From the Bosch brand, we can find very diverse models of grinders, from a compact wireless battery operated, to a professional pneumatic compressed air. As for appliances, Bosch offers many tools, including vacuum cleaners, washing machines, dryers, hoods, refrigerators, coffee makers, plates, ovens, and microwaves.

In Spain, the Bosch group also markets the brands Balay, Ufesa, Neff, Gaggenau, and of course, Siemens, who has been present since 1967 as a fundamental part of the company. BSH is a subsidiary of the BSH Group and is responsible for manufacturing and selling Bosch products with production sites in places such as Zaragoza and Navarra.

The Japanese company Makita was founded in 1915 in the city of Nagoya, operating in its beginnings as a simple repair shop and sale of electric motors and transformers. But thanks to the excellent performance, this brand has been transforming into a multinational company that reaches many countries around the world.

This is one of the leading manufacturers of electro-portable tools. It produces more than 500 different products in more than 11 factories distributed in parts of the world as diverse as Thailand or Canada.

Among its best-selling tools, we can find drills, hammers, screwdrivers, impact wrenches, strippers, rodents, shears, sanders, brushes, saws, cutters, cutters, grinders, and many more products for all needs. Among the grinders, we can find mini-grinders, straight grinders, and other models that vary in power depending on the user’s need. These grinders have good comments on the Internet for being very efficient.

One of the principles of this company is to actively participate in the development of society through the production of high-quality tools that facilitate people’s lives while being aware of the conservation of the environment.

This American company was created in 1924; that is, it has almost 100 years in the market of motorized tools for carpentry and construction. The founder of this company was Raymond E. DeWalt, the inventor of the radial arm saw, the stationary machine for cutting materials that has an arm capable of moving horizontally.

DeWalt grew very fast, thanks to the design and manufacture of quality industrial appliances. Internet users catalog their products as robust, powerful, and reliable. At present, the brand has around 200 electrical appliances and more than 800 accessories that complement these tools.

Among the products, we can find hammers, wreckers, drills, nailers, sanders, brushes, saws, garden equipment, grinders, among others. If you are looking for a bench grinder, this brand can offer you a good model, but straight, high-end, or high-power grinders are also available so that any user can find a model according to their needs.

It is one of the best-selling brands of power tools in North America and has been growing in recent years, reaching more and more countries in the world. This is one of the companies that are most concerned with adapting their production processes in order to avoid excessive damage to the environment. As a manufacturer, it has an ecological waste reduction policy, as well as material recycling.

 Shopping guide

Grinder type

There are at least three main types of grinders in the current market, and each one is designed for different cases. The portable grinder is the most common, recommended for both professionals and experienced amateurs since it uses large disks, more significant than 20 centimeters in diameter. It is mainly used for polishing or stripping large surfaces, as well as for cutting large pieces.

If this model is too large, then the mini grinder is an alternative. Their discs have a diameter of 12 or 13 centimeters. They are designed to cut or remove burrs in small pieces, so they are ideal for people with little experience in performing tasks or small jobs at home.

Finally, we have a desktop grinder. They are the largest, so they are mostly used in professional workshops. They are fixed to the table or workbench, and it is the piece that needs to be worked that is held with the hands and approaches the disk. They are usually quite heavy and not very portable, but also mighty machines.

Power and control

As we have different products, we also have different power that fit the way the grind yields. Therefore, it is necessary that the power is adjusted both to the characteristics of the grinder and the activity that we are going to perform, requiring more power, the more intense the work.

This power should also be controlled so that the product has greater versatility. Not all materials are equally demanding or complicated, so having an adjustable product always makes the job much more comfortable. In any case, if it doesn’t include it and you don’t need it, it’s not problematic either.

Safety and comfort

Finally, it is necessary to bet on comfortable and safe models when working. The support is obtained mainly from the size of the handles, which allow the piece to be adjusted where necessary. Something that is also practical to achieve better results when doing any task.

This comfort also influences safety, so you don’t have to worry about possible risks during use. Something to which other elements such as protection against short circuits are added, in case of an accidental cut of the cable or the covers that protect you against the projection of objects and splinters during the use process—the higher the security, the better.

Frequently asked questions

Q1: When and how to change the disc of a grinder

The CD of a grinder must be replaced if it shows wear and tear, so as to prevent its functionality; It must also be changed when it has accidentally suffered a fracture or breakage. Changing it is not as difficult as you might think. To start, unplug the tool from the power outlet, and if it is a wireless machine, proceed to remove its battery.

Proceed to place the key that is usually included with your tool, so that the key notches match the holes in the central disk. Then, it is essential that you press the indicated button so that the axle is unlocked so that you can loosen the discs; if you don’t, the key will turn with the shaft without loosening.

Once you have succeeded in loosening the tightening disc and the cutting disc, remove them thoroughly and place the new cutting disc, placing it in such a way that its central hole can coincide with the axis; Remember that there should be no slack. Place the tightening disc again on the cutting disc and proceed to unlock the shaft. Use the indicated key and turn, this time in the opposite direction, to continue with the respective tightening.

Q2: How to use a grinder for sanding

Grinders are versatile devices that support a wide variety of discs, even sanding discs of different materials. In these cases, you must have a rubber accessory that serves as the basis for these special sandpaper, in order to ensure their durability in the face of machine revolutions. The sandpaper is presented with different thicknesses and textures and are very resistant discs.

Before starting to sand, you must fix the workpiece with some press or another type of element, so that you can hold the grinder with both hands. You should not exert pressure, just keep the tool on the piece and move it gently from side to side, letting the disk work.

Remember that it is essential to have the protective equipment that includes gloves, glasses, mask, and hearing protection. In addition, it is advisable to perform this task in an open space.

Q3: Grinder or radial

The angle or radial grinders are essential machines in the toolbox of any professional. Its versatility offers in a single device, cutting, roughing and polishing. If it is a carpenter, you can clean the wood, and if you are a metallurgist, you can work with metal cuts, and for a builder, roughing will be a simple thing.

Therefore, the radial is a handy machine in different areas, as we could say about the grinder. In both cases, they are multifunctional tools that offer power, versatility, efficiency, and work with professional quality.

Q4: Is the grinder equal to the polisher?

The grinder and the polisher may look similar, but the truth is that these products are two machines that differ mainly in their speed of operation.

Depending on the brand, some grinders have an engine that provides a speed of up to 10,000 revolutions per minute, while a polisher can move in a range from 600 to 3,000 revolutions per minute; Faster speed, more power. Also, according to the resistance of the material to be polished, we must choose between one machine or another, and also, you must select the most suitable disc to perform the task.

The polishers are tools that allow you to perform different maintenance work, and they are also suitable for perfecting finishes in a wide variety of metals, fibers, wood, etc. They also work with an elliptical or reciprocating movement that favors dry polishing.

Q5: Is the grinder equal to emery?

A grinder is a tool used in mechanical workshops, carpentry, blacksmithing, and even, it is also used in homes where there are DIY enthusiasts, given its simplicity and usefulness. Depending on the geographical area of the country, this machine receives different names: electric grinder, emery stone and also as a grinder. In any case, it is a machine that uses a grinding wheel for abrasive machining.

Unlike a grinder that makes cuts and better finishes, the grinder does not offer precisely clean finishes or professional finishes. Therefore, its cutting power is more significant, since its functionality is focused on using very hard emery or stone, specially designed to wear and rough some materials.

While the grinder can eliminate roughness, spikes, and depressions, until achieving a smooth and polished surface, in addition, the grinder supports different discs for different tasks.

Q6: Grinder or jigsaw

Depending on the work you want to do, you can choose between a grinder or a jigsaw (also called jigsaws), since these are two totally different tools with different functions. The jig is distinguished by offering a movement of the blade that goes up and down; To do this you must put the foot of the machine in a perpendicular position with respect to the surface you are working and move the jigsaw according to the cutting line. You can also make other forms of cuts, not only in a straight line.

It is essential to take into account the power of the jig since this will depend on the speed of the tool and depending on the brand and model, and it can offer you precise cutting results. Some models include a mechanism that sucks dust through a nozzle that can be connected to the vacuum cleaner.

The grinder, on the other hand, offers you a large number of functions, which allow you to perform tasks ranging from DIY to large projects. This is possible thanks to its versatility and the power that these tools provide.

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