Power tools have been around for centuries, but one of the most versatile of these tools is the power grinder. It comes either as a handheld or benchtop tool, depending on the intended use. The versatility of a power grinder is due to the fact that the grinder’s wheel can be changed to perform many different functions. A power grinder is a lovely tool to have for DIY enthusiasts, carpenters, contractors, people in the construction industry, blacksmiths, forge masters, and people in so many other professions.
A Metal grinder can be used for sanding, grinding, sharpening tools, polishing, cutting, removing excess mortar and buffing up surfaces. The best power grinders on the market are those that offer power and safety features all in one and we want to mention here the fabulous Bosch 1375A 4-1/2-Inch Angle Grinder
, the Hitachi G12SR4 4-1/2-Inch Angle Grinder
, and the JET 577102 JBG-8A 8-Inch Bench Grinder
. These tools are currently very versatile and popular, not to mention that they come at reasonable prices. Power grinders such as angle grinders can be fueled in three different ways. The first is electricity, which means that the grinder is corded and should be connected to a power source all the time for it to work.
Another type is battery operated. They come with batteries you have to charge in order to operate your power grinder. These grinders allow you to work on projects in a place where electricity is not available. The last kind is those that are pneumatic, meaning they’re powered by compressed air. To ensure you enjoy the versatility that comes with owning a power grinder, you should ensure that you have the required grinding wheel for the job that you want to perform.
Whether you’re looking for a bench grinder or a handheld variation, we hope this guide will help you make an informed buying decision for the best power grinder for you.
Power grinders can cost less than $50 for a budget model, between $50 and $100 for a mid-range product and more than $100 (up to $180) for a high-end power grinder which comes with accessories, cases, and other bells and whistles. Cheap power grinders on the market can be tempting due to their low costs. However, they’re unreliable and made of poor-quality materials. This means your power grinder can fail to work when you need it the most. Despite your application area, you need a tool you can use when you need to get your work done.
When you invest in a good power grinder, you can be assured that you’ll have the convenience you require for any sort of project. Generally, a good power grinder will cost anything from $25 to $40. Expect to pay more for a top brand or a high-end model.
When looking for a power grinder, the most important feature to consider is its size and power rating. If you’re involved in large projects that require a powerful grinder with big discs, then you should opt for a bigger size than if you intend to work on smaller projects. You want a reliable tool that has been proven to pass the test of time, especially if you need to use it often. Also ensure that it has readily available parts for easy replacement if need be.
Here are some features to look out for in a power grinder:
- Anti-vibration handle for ease of use
- The voltage of the grinder
- The wattage or power the grinder requires
- Supported revolutions per minute
- Adjustable disc guard and side handle
- Brakes to stop wheel from running
- Soft start to keep the power grinder steady
- Safety clutch to prevent the grinder from jerking backward
- Disc size compatible with the grinder
- Weight of the grinder and ability to connect a vacuum
With the right power grinder, you’ll be able to finish your projects smoothly and rely on your tool each time you need it to deliver.
Construction and Design
Shopping for a power grinder? The following factors will help you in the selection process so you find one suitable for your projects:
Type – Power grinders are available in three types. The most commonly used is the angle grinder. This type has the rotating wheel at a right angle to the shaft of the tool. It is a handheld grinder and can fit many different wheels for versatility. The second type of power grinder is the straight grinder. In this grinder, the shaft and the wheel are aligned in a straight line. This kind of grinder is used as a rotary tool and is also handheld.
The last kind of power grinder you can get is the bench grinder. This one, as the name suggests, is not portable and is secured to the bench. Usually, this kind of grinder has two rotating wheels on either side. The choice here really depends on the kind of projects you have, but the angle grinder is more popular.
Power – Power consumption and power output are important considerations when buying a power grinder. Power determines how well the power grinder performs in the project you have. If you want a grinder that’ll help you cut through thick concrete or metals, you need one with better power output. You can check the power output of your grinder through its RPM and wattage.
RPM stands for revolutions per minute, which indicates how many times the wheel revolves every minute. A high RPM indicates a powerful motor. Power consumption is another important factor to consider. For this, you should check the wattage and voltage intake of your grinder. The voltage indicated should match the voltage output for your country, since not all countries have the same power rating. Some grinders require 240V, while others need as low as 110V.
Size – Size is also important because it determines how well suited your grinder is for the projects you have. If you want your tool to perform normal functions at home or in a workshop, opt for a handheld power grinder. If you need the grinder for more demanding and big projects, consider a bigger grinder that accommodates bigger discs and has more power output. Usually, handheld power grinders hold discs sized from 4 to 9 inches, while bigger variations take in wheels larger than 9 inches.
Design – Power grinders also come in many designs to enhance their safety and performance. The grinders should have adjustable disc guards so they can be rotated to where they’re required. The handle should be ergonomic and resistant to vibration. Make sure the design can also allow the motor to stay cool for optimal operation. Look out for design features that will enhance your user experience.
Warranty – A warranty is really important for your power grinder. A good brand will always stand behind its products and assure quality with a warranty. Although most companies offer limited service warranties, others give money-back guarantees on their products. You should always buy products that come with a warranty. Check the number of years the warranty lasts and what it covers.
Performance and Ease of Use
Before using a power grinder, ensure you have read all the safety instructions in the manual. If you have never used this kind of tool before, it’s important to ensure you can handle your chosen grinder. Safety is important when dealing with power grinders. Make sure you have the necessary safety clothing such as anti-vibration gloves, aprons and goggles on before you begin using your power tool.
A grinder should also be used at the right orientation to minimize or prevent injuries. Store them properly, away from weather elements to prevent damage and prolong their lifespan. Keep your grinder clean and free of debris or sludge so it keeps working properly. The power cable should not be damaged in any way. It’s also important to ensure that the grinding wheel is in good shape at all times.
The motor carbon brushes need to be replaced when they wear out, usually after 50 hours of use for an angled grinder. This means your chosen power grinder brand should have readily available parts for replacement.
In this review, we aimed to provide power grinders that come at different prices, so regardless of your budget, we've got you covered. Before buying such a device, decide what applications you are going to use it for, and then start shopping. Ultimately, you want a durable, reliable, efficient and powerful power grinder, and our five contenders check all these boxes. Let's start with the first one!
Sunex currently sells more than 10,000 products and most of them can be used in commercial and industrial applications. For example, this brand sells wrench sets, drilling products, toolboxes for repairmen, ratchets, power vacuums, power grinders, and many others. its products are backed by a reassuring warranty period and they come at affordable prices too.
The 1HP Super Die Grinder from Sunex Tools comes with a powerful 1HP motor which can spin up to 20,000 times per minute. It comes with an industrial collet which ensures that the accessories are safe at high speeds and it is made from composite materials to remain lightweight and easy to use. This product is backed up by a warranty period of 2 years and it is ideal for complex jobs and tough applications.
Just as the name implies, Chicago Pneumatic is a company which focuses on creating affordable and reliable power tools. It sells wrenches, sanders, power grinders, orbital sanders, air drills, and multiple other interesting and useful tools required to shape and finish materials. Its products are characterized by a beautiful red color scheme and are very easy to use.
For example, the 1/4-Inch 90 Degree Angled Air Die Grinder from Chicago Pneumatic comes with a lock-off throttle to prevent accidental startups and it features a collet with a diameter of a quarter of an inch. It weighs just 1 pound and it can spin up to 22,500 times per minute which is really impressive. This tool is designed for high speed blending, porting, deburring and many other applications.
When it comes to size, this unit measures 7.5 x 4.2 x 2.6 inches and it is made from lightweight, but durable materials, so it can be used for years to come. The manufacturer offers a warranty period of 1 year for this device as well, so what else can you ask for?
Makita is another prestigious manufacturer of power tools and a direct competitor to Dewalt. This company specializes in power tools such as sanders, air drills, grinders as well as pneumatic tools and cordless equipment designed for commercial use. With a Makita product, you can expect long service life, excellent results and ease of use.
The Makita 9557PBX1 Angle Grinder is designed to offer a unique user experience and can be used for a wide variety of projects and applications. It comes with a 4.5 inch wheel as well as a 7.5amp motor while remaining lightweight and compact, weighing just 4.5 pounds in total. For safety features, this product comes with an on/off switch and a labyrinth construction which increased durability and reliability.
The item can be bought as a standalone power tool or in combination with a dust extraction tool. This power grinder comes with an aluminum protective case, a warranty period of 1 year from the manufacturer and a detailed instructions manual, so you have everything you need to complete your project.
Just like its more popular competitors, Ingersoll Rand specializes in construction tools and power devices such as air wrenches, power grinders, pneumatic tools, pumps, lithium-ion batteries, you name it. This brand currently sells more than 9,000 products worldwide and many of them are bestsellers.
Let's take a look at the 301B Air Angle Die Grinder from Ingersoll Rand to find out what it's capable of. This product comes with precision machined stainless steel gears, it has a mechanism which prevents accidental startups and its motor produces up to 0.25HP of power which is usually sufficient for most light applications and simple jobs. The product comes at an affordable price and can also be used for automotive applications. Its maximum speed is around 21,000 RPM and it has a cleverly built front exhaust system which helps maintaining the surface clean as you work.
There you have it: five different types of some of the best power grinders that can be used for a wide variety of applications. Which one do you need the most? Make sure that you decide quickly, as they sell almost instantly online and you definitely don’t want to be left out!