10 Best Grinder for Welding [2022 Updated]

The truth is that the grinder is a very versatile tool when it comes to cutting, sanding, grinding and polishing all kinds of materials and surfaces, even though it is nothing more than a rotating disk driven by a motor.

A task that requires the assistance of a professional machine, such as the Bosch Professional GWS 7-125 model, is of great help. This product has a compact design, which makes it easier to work with.

The Einhell TH-MG 135E product is smaller than the other ones. There is a mini grinder with 135 watt of power that is accompanied by a wide range of accessories.

10 Best Grinder for Welding [2022]

If you want to sand, grind or even cut materials with a single tool, then you will be interested in finding the best grinder at the moment. It is a versatile tool that can do these and many other tasks effectively.

It’s not easy to know which is the best grinder as there is so much to choose from. Whether you are looking for a cheap grinder or a higher level one, you just have to see what we have chosen for you.

1. Makita 9557PBX1 4-1/2″ Paddle Switch Cut

The Bosch Professional GWS 7-125 grinder is designed for intensive use and can be used on all types of materials. A model that is capable of reaching 11,000 free-spinning revolutions thanks to a 720 watt motor, which also includes two positions of use.

Makita 9557PBX1 4-1/2" Paddle Switch Cut-Off/Angle Grinder
  • Powerful 7.5 AMP motor for high output power in a more compact tool (only 4.5 pounds)
  • Small diameter barrel grip (only 2 to 1/2 inches) for added comfort

The motor has been improved with a more extensive cooling, which prevents the grinder from overheating during work, just as we could expect from what for many users is the best current grinder.

Since it has an additional handle that we can place in the position that suits us best, we are better able to fix the orientation of the machine with respect to the material.

It is accompanied by everything you need to start working right away. Let’s know more about this model and its functions, as it’s the best brand of grinder for a lot of the market.


Power : It has a 720 watt motor and improved performance.

Ventilation : The body includes larger ventilation windows, which better cool the engine.

Spin : The disc reaches 11,000 revolutions per minute, in free spin mode.

Double grip: Includes an additional handle, which gives more comfort to your work.

Compact : Despite its characteristics, it is a compact model, making it easy to work in small spaces.


Origin: Some users comment having received a product made in China, although this does not imply a change in its durability or power.

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2. Hammerhead 6-Amp 4-1/2 Inch Angle Grinder

The Einhell TH-MG 135E mini grinder is an ideal product for those who want to do all kinds of small-scale work, and have a wide range of accessories for it. This model has a manual and easy-to-use design, which makes it easier to achieve the expected precision for this type of product.

Hammerhead 6-Amp 4-1/2 Inch Angle Grinder with 3 pcs Grinding Wheel – HAAG060
  • Tool-free Guard Adjustment - No tools are needed to adjust the safety guard position
  • Onboard Wrench Storage - Wrench Storage is conveniently located in the side handle. Never search for the...

700 grams is also something that helps its weight. The Einhell grinder’s motor has a power of 135 watt and can reach a speed of up to 10,000 revolutions per minute.

It’s ideal for all of your functions, including polishing, sanding, and even cutting. There are tasks in which you can lean on its wide range of accessories, which are organized within the product’s own carrying case, so that you always have everything at hand.

Let’s know more about this model, because it’s also comfortable for your small jobs.


Power : It has a power of 135 watts, enough for the work you will do with the product.

Comfort : The handle is comfortable to use and the machine has a light weight, about 700 grams.

Accessories : The kit includes a wide range of accessories to carry out all kinds of jobs.

Briefcase : A practical briefcase is included to store both the machine and its accessories.


Wear: The durability of wear accessories, such as files or discs, can be improved.

DEWALT Angle Grinder Tool

The Hitachi G18DSLWJ is one of the best corded grinders of the year. The product has a small body, but it is capable of turning at speeds up to 9,100rpm without any problems.

DEWALT Angle Grinder Tool, 4-1/2-Inch, Paddle Switch, 7-Amp (DWE4012)
  • 7.5 amp AC/DC, 12,000 rpm motor of the angle grinder is designed for faster material removal and higher...
  • One-Touch Guard of the metal grinder allows for a single action to adjust the guard. No buttons or...

A working Torque of 1.25 Nm can be generated by something. It’s something significant considering that we are talking about a battery-powered model.

This battery has a capacity of 5 Ah and a voltage delivery of 18 volts, which gives an adequate autonomy and performance to the product, when working. If you want to work with one of them while charging the other, this grinder has the usual operation, including the double handle, the storage case, as well as the charger and two batteries. 

If you know which grinder you want to buy, you need to know all the available information, such as the one we expand on below.


Rotational speed: The 18-volt motor generates an idle rotation of up to 9,100 rpm.

Compact Design: The compact design makes it easy to work in hard-to-reach areas.

Accessories : The grinder is accompanied by two batteries and a charger, so you can work longer.

Comfort: This model includes the additional handle and has an efficient design, so you can work more comfortably.


Performance : You may notice a slight loss of performance when the battery is near depletion.

Price : This model is not among the cheapest grinders in our collection.

Angle Grinder, 5-Inch Air Angle Grinder 

This kit does not include one, but two machines that you can use to make a quality angle grinder. For the largest jobs, we have a DeWalt grinder with 2200 watt of power and a 23 cm disc size, along with another grinder from the same brand with 900 watt of power and a 12.5 cm disc.

Angle Grinder, 5-Inch Air Angle Grinder by Autolock, Pneumatic Angle Grinder
  • ⛳ 【Ergonomic Design】 With a lightweight composite housing and ergonomic design, the Autolock Angle...
  • ⛳ 【Powerful Angle Grinder】5 inch angle sander has a standard 1/4" NPT air outlet this portable...

Regardless of its scope, both elements form an interesting combination that can carry out all kinds of work. There are some models that have the same quality andDurability as the brand’s products.

The carrying case is included with the grinder, along with the additional handles, adjustment keys, and other accessories.

For greater peace of mind, the brand will give you a 3-year warranty, as proof of the good resistance offered by this model. The two grinder offered by the complete DeWalt kit will allow you to expand your range of work.


Two in one: With this kit you have two machines, with which to carry out all kinds of jobs.

Comfort : The grinders have a good grip and reduced vibration, for greater comfort.

Durability : Coming from a first-rate brand, the machines will be with you for a long time.


Weight: The weight of the machines is somewhat higher than other similar ones, although this does not penalize the comfort of use.

Protector: The protector of the larger machine is not metallic, but plastic.

Worx WX812L.9 20V Power Share 4.5″ Cordless Angle Grinder 

We have been talking about the product, but the MakitaGD0600 grinder is somewhat different. This product is a straight grinder that has a different approach when carrying out different jobs and is just as practical.

Worx WX812L.9 20V Power Share 4.5" Cordless Angle Grinder with Brushless Motor (Tool Only)
  • [THE POWER TO OUTPERFORM] Worx Nitro tools are engineered to provide greater power, performance, and run...
  • [BRUSHLESS MOTOR] Brushless motors are more efficient, run 50% longer, are 25% more powerful, and have...

The model has a power of 400 watt and is suitable for carrying out small and medium draft jobs, with greater flexibility than the larger models.

It is a very manageable product due to its characteristics, which include a tight weight and a good grip area. There is something that allows for more efficient finishes.

It has a good size cable, which gives you the mobility you need when moving and working on materials. If you prefer to work with a straight grinder, then this product is for you.


Straight Design: The straight design is an advantage for cutting or finishing and roughing work.

Power : Its 400 watts of power make it easy to work on all types of hard materials.

Comfort : It has a comfortable grip and a light weight, to work more comfortably.


Reach: It may fall short for deeper work, although it has a wide range of applications.

Expertise : By its system, it is a grinder that requires a bit more expertise to use.

BOSCH 4-1/2 Inch Angle Grinder

The Compa Tech CTAD3215F-W model is among the cheapest grinders on the market. In this case, we are talking about a bench grinder with two rotating discs, which are ideal for roughing, polishing, and finishing work on parts made of different materials.

BOSCH 4-1/2 Inch Angle Grinder GWS8-45
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BOSCH 4-1/2 Inch Angle Grinder GWS8-45
  • COMPACT: Weighing only 4.2 lbs., the Bosch GWS8-45 Angle Grinder is lightweight and compact. Its slender...
  • POWER: The angle grinder features a powerful 7.5-amp motor to produce 11,000 no-load rpm for professional...

You have everything you need for these finishing tasks with the product, which includes a metal grinding disc and a final finishing stone.

A job in which it also helps to have an operating power of 250 watt helps to move the discs with the speed and power necessary to carry out the proposed tasks effectively.

It is possible to operate the model without holding the machine and with adequate safety because the model is finished with the design of a tabletop product. The most notable functions of this table grinder will be highlighted below.


Complete set: The table has a polishing and finishing disc, for a quality result.

Power : Its 250 watts of power are enough to move the discs efficiently.

Safety : Both discs include the necessary protectors to avoid the projection of particles.


Screwed: It does not include holes for fixing to the table, although its weight is enough to work comfortably.

Support : The roughing wheel does not include support to place the work object.

BLACK+DECKER Angle Grinder Tool

Although it is not one of the best known brands, a Parkside grinder could not be overlooked among our chosen ones. A new wireless operating system is offered by the Parkside PWSA 20 model, which comes with a rechargeable battery.

BLACK+DECKER Angle Grinder Tool, 4-1/2-Inch, 6 Amp (BDEG400)
  • Metal gear case for durability and longer life
  • 3 Position side handle provides added comfort and control

The space that the grinder has for discs is in line with most of the models that are on the market. It also incorporates the already classic improvements, such as the mobile additional handle system, which we can place in the position that suits us the best.

Something that adds an extra comfort to a product that also stands out for it’s light weight and compact size, accompanied by a pleasant ergonomics grip throughout the traditional holding area.

It has a quick disc change system that will make the process even simpler. It is easier to work comfortably if you have models like this grinder.


Without cable: This model does not need a cable, but works directly with battery.

Grip : It has an additional handle and a very comfortable design in the grip area of ​​the machine.

Quick change: The quick disc change system does not require tools and is very comfortable to use.


Battery and charger: Both battery and charger for the grinder are sold separately.

Ignition : The ignition location is at a point where it could be accidentally actuated while holding the grinder.

Dewalt DCG412B 20V MAX* Lithium Ion 4-1/2” grinder

Some jobs don’t require a deep draft machine, but they do require a small grinder, such as the Bosch Professional GWS 7-125 12V-76 model.

Dewalt DCG412B 20V MAX* Lithium Ion 4-1/2” grinder (Tool Only)
  • 8,000 rpm motor provides high power for cutting and grinding applications for the angle grinder
  • DEWALT grinder comes with Quick-Change Wheel Release allowing tool free wheel removal without need for a...

The Bosch mini grinder works with 76-millimeter diameter discs, but still maintains high performance in the face of any challenge.

The grinder has a speed of 19,500 revolutions per minute and it is powered by a 12-volt motor. When making cuts and working in all kinds of places without having to have plugs nearby, something that adds even more flexibility to the model.

The comfort of the product is not affected by this aspect since it has a light weight of 900 grams as well as a good size handle to achieve adequate precision during work. We will leave you with the result of our analysis if you are clear about what this model can do for you.


Wireless: This model works without cables, to give you greater comfort during use.

Power : Despite its approach, the disc rotates at speeds of up to 19,500 rpm.

Grip: The model provides a proper grip when working with the product.


Noise: The product generates a noise of 86 decibels, which is quite high for this model.

Charger and battery: As usual, the charger and battery must be purchased separately.

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The Korman 215206 pneumatic grinder is a product designed to work with air, using conventional 14-inch inlets. It is possible to achieve adequate performance when working with this model if it has an air inlet pressure of at least 6.3 bar. You can work directly with one hand with the help of the activationtrigger located in the area of the handle.

DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder, Paddle Switch, 4-1/2-Inch to 5-Inch, Tool Only (DCG416B)
  • Angle grinder gets up to 54% more power when paired with FLEXVOLT batteries
  • Kickback Brake of DEWALT angle grinder engages with maximum force to quickly stop the wheel and shut off...

Something that facilitates having a high-quality metal construction, which not only gives resistance to the product, but also simplifies that grip, and something that also facilitates having a high-quality metal construction, which not only gives resistance to the product,

The grinder is accompanied by 10 different heads, as well as a briefcase in which it is easier to store everything when you aren’t using it.

It’s something that makes it the best quality-price ratio grinder of our chosen ones. We talk about how to change the way you work with this efficient pneumatic grinder.


Pressure: 6.3 bar air pressure is enough to start working with the device.

Finish : The metallic finish gives the device greater resistance during use.

Accessories : It is accompanied by 10 molas and a briefcase to store everything when you do not use it.


Trigger: You must be careful not to get your hand caught during the activation of the grinder.

Size : The size of the molas is suitable for small jobs, but perhaps not for others of greater depth.

Guide to buying grinders

The grinder is one of the most versatile power tools we have at our disposal. This can be used to cut, polish, sand, and grind materials.

It is convenient to have a clear idea of what to look for when buying a product. We give you all the clues you need to make buying a good and inexpensive grinder much easier in this guide, where we summarize some aspects of buying the best grinder.

Grinder type

The tasks that we are going to carry out and the type of grinder that we need are the first things that we need to figure out. Something that is easily understood by taking a look at any comparison of grinders, in which we will find different types and models with which to perform different tasks.

It will be necessary to choose their size when starting with a conventional grinder. It is possible to say that there are large grinders for discs of 12.5 cm or larger.  We would have the mini grinders, which ranged from those with 7.5-centimeter discs to the smallest, common in marquetry or handicraft work.

The variety of products on the market is considerable and these distinctions are approximations. Straight grinders are one of the types of grinder that we have, apart from the conventional ones. When making cuts, these are more useful because they allow you to see more clearly.

We also have a table grinder, which we do not have to carry in our hand, but they are placed on any support and have rotating wheels to polish. They are suitable for certain jobs and can be used as alternative models to conventional ones.

Power and power

The power of a grinder is one of the parameters that is marked by how much it costs and what grinder it is for. The power is provided by the motor, but the speed at which it reaches must also be verified. The higher these two parameters, the better the product is at working efficiently.

A conventional grinder can start at 500 watt of power, if it works in plugged mode, and a mini grinder can start at 100 watt of power, if it works in plugged mode.

The turning speeds of the conventional models are around 10,000rpm, while the smaller ones can increase the level to almost 20,000, since they use smaller discs and, therefore, rotate at a higher speed. We have already raised the issue of food and this leaves us with nothing.

Conventional grinders are usually wired and we need a plug nearby to use them. The battery-powered models don’t require a plug, but instead have a battery from which they can get power.

It is true that plugged-in grinders are cheaper than conventional ones, but it is also something that gives more comfort to use. It is all up to you to decide what is best for you.

Ease of use

The most interesting aspect of a manual tool is the comfort of use. It is not pleasant to work with something that is uncomfortable, so we have to take care of it.

The grinder needs a good grip to be comfortable. The grip affects both the body of the machine and the additional handle. We don’t have to load too much during work if we combine a light or tight weight. It’s easier to move and get where it’s needed if the product is a small one. Disc change is affected by comfort.

The system included in the grinder needs to be easy to use. There is nothing wrong with using a wrench if the process is not complex. Don’t forget to check the safety zone, which prevents the projection of particles. It will give you more comfort during work.

Frequently asked questions

Q1: How to use a grinder?

The use of the grinder depends on what we want to accomplish. It will be easier to mount the grinder and hold the piece if we have a suitable support on which to do so.

We will have to pass the grinder through the area to remove burrs and other unwanted elements from the surface of the object to be sanded. If we want to sharpen any cutting element, the process is very similar to sharpening.

Q2: How to sharpen an ax with a grinder?

To sharpen an ax with a grinder, it will be necessary to verify the holding of the cutting head on the handle, as well as cleaning the cutting blade, and sanding it, if necessary to remove rust and dirt.

Next, the ax blade is placed on a support and we apply the grinder disc on the surface of the blade, trying to give it an angle of 5 to 15 degrees.

It’s important to keep the blade cool during the process and to keep the original sharpness. If we consider it necessary, we will apply a protection to the blade after it cools down for about 10 minutes.

Q3: What is an angle grinder?

The angle grinder has its full name but is nothing more than a conventional grinder. Almost all grinders are angle grinders, since they can work at different angles depending on the tasks we have to perform.

The working angle of a straight or edge grinder can be adjusted through the use of the clamping elements.

Q4: How to change the coals to a grinder?

Coals, also called brushes, are essential elements for a grinder to work. Although it is relatively easy to change these, they tend to degrade with use.

The first thing we will do is open the product’s case and make sure the grinder is unplugged. It’s usually sufficient to remove the screw from the bottom cover of the grinder, located in the cable area.

Lifting the tab that holds the carbon holders will allow us to find and remove them once the shell is open.

We place the new coals here to make sure they are well placed and connected. If everything is correct, we can close the housing after testing the grinder.

Q5: How to cut glass with grinder?

This material usually has a diamond edge, so we must use a specific disc to make this type of cuts. We must place the glass on a support mark and proceed to cut with great caution, without exceeding the speed or pressure on the edge of the edge to be cut.

It is important to remember that this cutting process is not suitable for all types of crystals, especially if they are thick, so it needs to be limited to fine crystals and suitable for the size of the disc.

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