Before we get into the nitty-gritty of the best 7 inch angle grinder currently in the market, we should first understand what an angle grinder is. To put it quite simply, an angle grinder is a handheld machine that serves the purpose of grinding, polishing, sharpening and cutting surfaces.
When we say “7-inch angle grinder”, we are referring to the grinder size. This is the size of the grinding disk itself. Most home projects require 4.5-inch or 5-inch sizes. On the other hand, 7 inch angle grinders are mostly used by professionals. There are tons of 7-inch angle grinder in the market and deciding on which one to purchase can be both overwhelming and frustrating.
However, that is the main purpose of this article. Before you make a purchase, it is vital to understand what to look for when purchasing one. In this article, we will seek to review the best 7-inch angle grinders and their features and conclude on the best one in the market.
Comparison of Best 7 Inch Angle Grinder
OUR TOP 5 PRODUCTS REVIEW
1. Makita GA7031Y 7-Inch Angle Grinder
This is a 7-inch angle grinder that has been manufactured by Makita that guarantees you of ease-of-use and great motor protection features. This is ideal as it ensures the machine is able to last longer and gives great performance for all your commercial and industrial tasks. This is important for every professional. Without further ado, let us look at the features.
Makita GA7031Y comes with a powerful motor of 15 AMP coupled with speeds that goes up to 8,500 revolutions per minute. (RPM). This means that you are sure to have a great finish and faster stock removal when grinding, sharpening or polishing up surfaces.
Construction and Design
It has been made with a labyrinth construction which reduces dust and other debris from getting into the motor and bearings. This enhances the durability of the machine.
Also, it has an armature that is secured by a protective zig-zag varnish. This wades off contamination by making a barrier with wire mesh intake covers that are made to prevent small metal pieces from entering the motor.
The angle grinder has been designed with an ergonomic rubberized handle that is meant for less vibration. It has been in such a way that it allows you to install it on whichever side of the tool you would prefer. This is flexibility at its best.
2. Makita 195386-6 Dust Extracting 7-Inch
A model that has been designed for Makita 7 inch grinders, this is a model that is great for finishing concrete surfaces, removing concrete and paint material and for surface coating removal. It has features such as a spring-loaded suspension system, soft brushes, and an extraction port.
Let us delve further into the details of these features.
Design and Construction
This machine has been constructed with a 4-spring-loaded suspension system. What this does is that it ensures the shroud flush is kept to the surface during operation and recoups for blade wear. Also, the grinding shroud comes with a detachable edge piece to work on surfaces or edges.
The model has also been made with soft brushes that guarantees you of containing the dust during operation and allows for smooth movement when working on any surface.
If you are worried about using it with other vacuum hose systems, then we are here to put your worries to rest. The extraction’s port outer diameter has been designed in such a way that it gives you the freedom to use it alongside other standard vacuum hose systems. This further reiterates the convenience it allows you to have.
3. Makita GA7021 7-Inch Angle Grinder
When you see Makita, think of high performance and a powerful motor. The reputable brand has been in the industry for long to ensure they give you the best quality at a reasonable price.
This model is a sure indication of this because of the features that guarantee comfortability, easy to control and increasing the life span of the tool. The detailed features are explained below.
With a weight of 12 pounds, this angle grinder has a 15 amps motor with 6,600 rpm for quick material removal. This shows that it is full of power and can be used for the most demanding applications and heavy-duty tasks that the operator is involved in with ease.
Design and Construction
To increase the durability of the tool, it has a labyrinthine construction that aids to protect the internal parts from dust and debris that may contaminate the components. Also, it has a wheel guard that is tool-less to promote fast and easy adjustments during operation.
What is appreciated most about this model is the large trigger switch that is simple to use and locks on for an extended period of time. Not to mention the large shaft lock which allows for simplified wheel changes.
Lastly, the switch handle can move at an angle of 90◦ left and right. As if that is not enough, the side handle has been designed to switch to any of the 3 positions for control and comfortability.
4. Bosch 1974-8 7-Inch Large Angle Grinder
Bosch power angle grinders are known for delivering great performance and reliability that lasts. They are definitely changing what it means to be innovative. This is no different from this model.
It is ultra-efficient and has a vibration control system that is standing out in the market. Also, it is a large and light tool that is able to accommodate such a strong and powerful motor. This is definitely a plus for most operators.
The angle grinder boasts of having 15 amp AC/DC with speeds of up to 8,500 rpm for the motor coupled with a weight of 11.4 pounds. This shows that it as a great balance of power to weight and size available and you are sure to get the highest amount of power at the lowest amount of weight. How cool is that?
Design and Construction
The Bosch power tool has been designed with quick adjust guard system that quickly adjusts and locks in place to ensure the maximum protection of the components.
For protection against dust and metal debris that can be abrasive, it has epoxy-coated field windings for this. It has a tri-control switch design that keeps all accidental startups at bay and detachable brush covers that guarantees you an easy brush replacement.
5. Hitachi G18ST 7-Inch 15-Amp Angle Grinder
This 7-inch Hitachi model is an improvement of the previous models because it guarantees you of higher output power, higher performance, more durability, lighter weight, and a better compact size.
It is best for deburring and finishing aluminum, bronze and iron surfaces. In addition, it can also be used for cutting soft materials made of steel while also cutting and grooving concrete and other materials made of stone.
High Performance and Powerful Motor
This angle grinder boasts of a powerful motor that runs on 15 amps with speeds of 8,500 rpm for all your tough grinding applications. This ensures you get the job done in the fastest and most efficient way.
Design and Construction
It credits itself of a labyrinth construction which protects the inner components such as the motor bearings from dust and debris thus promoting longer tool life.
Also, the armored coils that are protected by varnish, long wedges and protection tape aid in extending the service life by preventing fine grinding particles from going in.
The side handle can be detached and placed to the left or right of the tool, thus making it easy for both the right-handed and left-handed to operate the tool. Also, the carbon brushes are externally accessible, thus promoting quick and simple maintenance. Lastly, the tool comes with a spindle lock that makes wheel changing super easy.
Things to Consider When Buying the Best 7-Inch Angle Grinder
When it comes to current, craftsmen and tool numbers can make a decision between 110 and 230 volts alternating current (AC) while on the other hand, most wattage ranges from 500 to 1500 watts.
From these ratings, you can notice that they highly vary, although the lower the rating in an angle grinder, the insufficient it is for household tasks. An angle grinder with more amperes would be best for heavy-duty professional projects.
The two aspects that go hand in hand with angle grinders, and affect the comfort of using the tool are the discs weight and size. It is good to note that it is more comfortable to use a smaller unit than it is to use a larger unit.
This is unless you would want to use the power tool for huge construction on industrial jobs. The more compact units are easier to hold for a longer time, but grinders with handles that vibrate take operational comfort further.
Sharpening tools and other projects that require angle grinders can involve a lot of moving parts and dangerous situations. Safety should be an essential priority for anyone looking to buy one of these tools.
Consider the type of safety features your angle grinder provides. Things like spark guards and eye shields are safety features that can protect you from bodily harm while using your angle grinder. While some angle grinders offer safety in the form of additional attachments, it’s much safer to buy an angle grinder with built-in safety features.
The speed measures how fast your angle grinder rotates. However, too much speed isn't always a good thing. For larger wheels, too much speed can result in the wheel falling off, overheating, or destroying the whole grinder completely because of the disk shattering.
Because of this, we suggest that you respect the maximum speed of your angle grinder relative to your projects. Staying at that speed keeps it from destroying your machine. When shopping for an angle grinder, find its top speed and stay within that range for your device to operate correctly.
Can a 9-Inch Grinding Wheel be used in this Tool?
Before answering this question, the first thing to understand is that operating a grinding wheel in an over-speed state is a potential source of a serious accident or injury.
This is because the over-speed state from the grinder can put stress on the grinding wheel with a lower rated maximum speed and thus cause shattering within the first few minutes of operation.
So to answer the question, yes a 9-inch grinding wheel can be used on a 7-inch grinder as long as the maximum speeds of both are the same and you would have to use a guard.
If you use a 9-inch grinding wheel with a maximum speed of 6,000 rpm on a 7-inch angle grinder with a maximum speed of 7,000 rpm, it can lead to wheel cracking and eventually, breakage.
Nonetheless, it is important to read the manual before using a different grinding wheel. To be on the safe side though, it is advisable to use the grinding wheel that matches your angle grinder.
As you have clearly seen, the best 7-inch angle grinder is one that serves the purpose for which it is made for, is versatile and gets the job done efficiently. After inspecting and introspecting, the 7-inch angle grinder that gives the highest performance is durable and reliable, the Bosch 1974-8 7-Inch Large Angle Grinder is my winner.
This is because as compared to the other four, and on top of its great features, it has additional features of having a vibration control system and a great balance of power to weight and size. These features are essential as they ensure the professional is able to get a balance of both quality and ultra-efficiency.
Frequently Asked Questions (FAQs)
Q: What are the safety measures to adhere to when using an angle grinder?
A: You should always clamp and secure the work in place and make sure that the blades are durable and the machine has a low noise level.
Protective clothing is a must as well as a full face shield, especially if you are going to grind hard materials. The blades may also break if you are not careful so it is important that you have your eyes and face covered well.
Q: What are the tips on how to properly use an angle grinder?
A: Make sure the clamps secure the material you will work on and always keep the grinder spinning away from the edge and not into it to prevent the grinder from kicking back. You should apply a steady but light pressure when using it to sharpen knives and tools.