Best 9 Inch Angle Grinder in 2021 (Reviews and Comparison)

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Angle grinders rule the construction world whether for DIY or for business. The 9 inch angle grinder is a very powerful tool that can help you do a lot of work at home. You can grind and cut different materials like pipe, wood, rebar, concrete, etc. 

This machine is made with a powerful motor and a decent sized cutting disk for long lasting performance. Its control system allows you to adjust the speed and the depth of cut, turning this task into an easy and enjoyable experience.

If you are looking for the best 9 inch angle grinder then keep reading. We’ll show you the best contenders for our top spot and crown the champion we know to be the best. Why trust our review? We test all sorts of different products so you don’t have to. Our loyal readers know that we tell it like it is and only give out the best reviews and buying advice. Let’s get started. 

COMPARISON CHART

IMAGE PRODUCT

9"" Angle Grinder

Makita GA9040S
  • 15 AMP motor
  • Rotating rear handle
  • 6000 RPM
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HiKOKI G12STX/G23ST twin pack grinders Angle, 230 Volt Version, 230mm 9

HiKOKI G12STX/G23ST
  • 15 AMP motor
  • Available in 100V and 220V models
  • 6600 RPM
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DEWALT Angle Grinder, 9-Inch, 6,500 RPM, 4.7-HP (DWE4559N)

Dewalt DWE4559N
  • 120V motor
  • Anti vibration trigger handle
  • Dust ejection system
  • 6500 RPM
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Metabo - 9" Angle Grinder - 6, 600 Rpm - 15.0 Amp W/Non-Lock Trigger (US606467760 24-230 MVT DM), Professional Angle Grinders

Metabo US606467760
  • 15 AMP motor
  • Anti vibration technology
  • Dust guard
  • 6600 RPM
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Toolman Single Speed Angle Grinder 9" 15A For Heavy Duty DB5018

Toolman DB5018
  • 15 AMP motor
  • ETL protective system
  • 11,500 RPM max
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1. Makita GA9040S

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9"" Angle Grinder

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9"" Angle Grinder

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9"" Angle Grinder

Features

  • 15 AMP motor
  • Rotating rear handle
  • Labyrinth construction (seals the motor and internals from dust)
  • 6000 RPM

Makita GA9040S is the latest version of the company’s popular line of 9-inch angle grinders, which was first introduced in 1996. It has proven to be a highly effective and versatile tool. 

But despite its qualities, it wasn’t until the GA9040S that the brand could market a 9-inch angle grinder as the best. Makita’s entry to the 9 Inch Angle Grinder market is a powerful tool for power contractors and DIY enthusiasts. 

WHAT WE LIKE

The 9040S is well made, comes with a good variety of options and power levels, and is backed up by a good warranty.

Makita’s GA9040S is a powerful yet compact 15 amp brushless motorized angle grinder that offers an assortment of powerful features, making it the ideal tool for both commercial and DIY uses. 

Its ultra-compact design allows it to be stored in tight spaces, while its 15 AMP brushless motor provides a significant amount of power and durability. It’s also one of the few grinder models in this class that comes with a removable dust bag, which can be emptied and washed to keep your machine clean for extended periods.

PROS

  • Plenty of power with 15 AMPs
  • Lots of position adjustments
  • The motor is protected from dust by a strong set of seals

CONS

  • It would be nice if the “optional” flanges for the diamond cutting attachments came with the unit

2. HiKOKI G12STX/G23ST

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HiKOKI G12STX/G23ST twin pack grinders Angle, 230 Volt Version, 230mm 9

Features

  • 15 AMP motor
  • Available in 100V and 220V models
  • Labyrinth construction (seals the motor and internals from dust)
  • 6600 RPM

Hikoki has been in the grinding business for a long time and has always been popular, especially among hobbyists. And the company has always been known for their superb quality products. 

WHAT WE LIKE

We asked ourselves why they don’t have a more prominent spot on the market. The answer is quite simple: This is all about the price. 

You can find cheaper alternatives, but you won’t find a more robust product. The Hikoki G23ST is one of the better products in the market, and it is also one of the most reliable.

The Hikoki G23ST is a well-performing 9 Inch Angle Grinder that is able to complete most DIY projects. For a budget-friendly angle grinder with professional quality, this is the right tool for you.

PROS

  • Nice three year warranty
  • Heavy-duty design
  • Versatile and easy to use

CONS

  • The “Hikoki” branding is confusing even though it’s called a “Hitachi” product

3. Dewalt DWE4559N

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DEWALT Angle Grinder, 9-Inch, 6,500 RPM, 4.7-HP (DWE4559N)

Features

  • 120V motor
  • Anti vibration trigger handle
  • Dust ejection system
  • 6500 RPM

Most folks are aware of the work that Dewalt does in the power tool industry. But many are unaware that they do a lot more than just manufacture saws, drills, and impact wrenches. 

WHAT WE LIKE

Dewalt has recently added some new products to their lineup, but the one that caught our eye was the DWE4559N. Since we do a lot of 9 Inch Grinder reviews, we thought it was time to take a look at a Dewalt model that had a lot of potential.

The Dewalt DWE4559N is one of the most capable 9 inch angle grinder being sold today. Why? Let’s start by looking at the features and benefits of this particular model. 

First, let’s look at the tool’s specs. The 9-1/2 inch angle grinder has a maximum capacity of 9,000 rpm, a max output of 2,000 rpm, a 20 amp clutch-brake, a 125-volt motor, a 1/2 inch cutting disc, and a 1/2 inch disc wrench. 

The tool weighs in at 7.1 pounds. It has a rubberized grip which makes it comfortable to use. The unit comes with a 3 year limited warranty.

PROS

  • Compact design allows grinder to be used in difficult areas
  • Very good dust ejection system
  • The anti vibration handle works like a charm

CONS

  • No locking switch 

4. Hitachi G23ST

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Metabo - 9" Angle Grinder - 6, 600 Rpm - 15.0 Amp W/Non-Lock Trigger (US606467760 24-230 MVT DM), Professional Angle Grinders

Features

  • 15 AMP motor
  • Anti vibration technology
  • Dust guard
  • 6600 RPM

The Metabo RBG 9″ Angle Grinder has proven to be one of the best tools of the Metabo grinder line. This is because the machine is extremely powerful, yet still quite compact and lightweight. 

Although it is not as powerful as the Metabo RBG 12V, the Grinder has the same motor, gearing and other components as the 12V model.

WHAT WE LIKE

Makita’s GA9040S is a powerful yet compact 5.7 amp brushless motorized angle grinder that offers an assortment of powerful features, making it the ideal tool for both commercial and DIY uses. 

Its ultra-compact design allows it to be stored in tight spaces, while its 5.7AMP brushless motor provides a significant amount of power and durability. It’s also one of the few grinder models in this class that comes with a removable dust bag. This can be emptied and washed to keep your machine clean for extended periods.

PROS

  • Excellent safety switch prevents accidental starts
  • The built-in anti vibe system dampens quite well

CONS

  • Some “optional” accessories should come as standard

5. Toolman DB5018

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Toolman Single Speed Angle Grinder 9" 15A For Heavy Duty DB5018

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Toolman Single Speed Angle Grinder 9" 15A For Heavy Duty DB5018

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Toolman Single Speed Angle Grinder 9" 15A For Heavy Duty DB5018

Features

  • 15 AMP motor
  • ETL protective system
  • 11,500 RPM max

Being a pro at using a grinder is one thing, but knowing which of the best angle grinders to buy is another. If you are looking for a grinder to use around the home or in light commercial applications, the Toolman DB5018 is an interesting choice, at least on paper. But we advise that the buyer beware. 

WHAT WE LIKE

It is easy to use, well-built, and has a high-quality die set, the product of which is more than capable of grinding a wide range of materials.

The leading edge of the angle grinder market has been the DB series from Toolman. Over the last few years, this series has evolved to become much more than a basic tool for cutting metal. 

The DB5018 should be good, but it really isn’t. Many customers have experienced a wide range of quality issues. Poor build issues and quickly failing parts mean that we cannot in all honesty recommend this angle grinder.

PROS

  • Heavy duty build

CONS

  • Quality issues plague the tool
  • Overheats frequently

Buyer’s Guide – Things To Consider Before Buying a 9-Inch Angle Grinder

Speed

When considering a speed for an angle grinder, it is important to remember what task you want to accomplish with it. Most 4-inch angle grinders normally stay within the 11,000 RPM range, which is more than fast enough to cut through wood, slate and other materials. 

This type of grinder comes in a wide variety of models including pneumatic ones. They are versatile and offer a great range of cutting discs.

Comfort and Control

Proper comfort and control is paramount when operating an angle grinder. You’ll want to look for things such as a soft grip that feels great in the hand when using the grinder. 

Most grinders have an adjustable handle which is used for increased or additional control while operating the tool. Always make sure the handle fits comfortably in the palm of your hand. Also ensure that the handle grips well, especially if you plan on using your grinder for extended  periods of time.

Power-to-Weight Ratio

Your angle grinder must feel balanced when you are using it. The power-to-weight ratio plays a big part in helping maintain that balance. 

For example, a 15 AMP grinder can be bulkier than a 3.5 AMP grinder. This is because the more powerful grinder may need additional vibration dampening materials. 

Perhaps the grinder has features such as a dust ejection system. This would also increase the weight. Therefore, making sure the ratio is balanced will ensure you can use the grinder without feeling fatigued.

Deals and Warranty

The deals are great, but the warranty is even better in our opinion. The proper warranty can make a world of difference if something goes wrong with the grinder. 

Sometimes you can bake your cake and eat it too. There’s all sorts of great deals on 4 inch grinders. By doing your homework before you buy, you can get a fantastic deal on a grinder that also has a great warranty to boot.

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