5 Best Angle Grinder for Sharpening Mower Blades in 2024

Angle Grinder For Sharpening Mower Blades

Mower blades need sharpening to restore a sharp edge before they lose their effectiveness. An angle grinder fitted with the correct lawn mower blade sharpener can restore a sharp edge to the dull blade.

Dull mower blades can cause the grass to be torn up instead of cut cleanly. This creates a mess that needs to be cleaned up after each use, which can take time away from your gardening duties.

If you use the best angle grinder for sharpening mower blades, you can restore your blades to full efficiency with little time and effort. It also saves you the cost of having to replace your mower blades.

However, finding a good angle grinder can be difficult if you’re not familiar with the available models. Therefore, we created this article to help you find out the top rated angle grinder for sharpening mower blades.

Black And Decker Hand Angle Grinder For Sharpening Mower Blades

WORKPRO Light Weight Angle Grinder For Sharpening Mower Blades

Craftsman Cordless Angle Grinder For Sharpening Mower Blades

Top 5 Reviews on The Best Angle Grinder for Sharpening Mower Blades

If you are looking for the top quality angle grinder for sharpening mower blades, you need to know the top options. There are several notable angle grinder options on the market today that can be used with your mower blades.

However, not all of them are appropriate for the job. We’ve compiled reviews on the top five angle grinders that are available on the market today.

1. Black and Decker Hand Angle Grinder for Sharpening Mower Blades

If you are looking for an angle grinder to sharpen your mower blade, look no further. The angle grinder tool from BLACK+DECKER is the perfect tool to use.

It has a 4-1/2-inch wheel and has a 6 amp motor. This tool can cut through metals, plastics, and other hard materials.

This angle grinder is perfect for all sorts of grinding tasks and removing rust. It has a durable metal gear case that will last for a long time, and it also comes with a handy little side handle for better control. Plus, the spindle lock makes changing accessories a breeze.

The Black and Decker hand angle grinder is perfect for sharpening lawn mower blades. It features a narrow body that makes it comfortable to hold, and it has a 3-position side handle for added control. With its versatility, the angle grinder can be used with a variety of materials and angles.

It operates at 10,000 rpm, and has a spindle size range of ⅝ inches – 11 inches. With its spindle lock, it’s easy to change accessories. Plus, the Black And Decker Hand Angle Grinder For Sharpening Mower Blades is comfortable to hold, making it easy to get the job done.

The tool comes with a metal grinding wheel that quickly and easily sharpens the blades. The angle grinder is also very easy to use, and it includes a spanner wrench for easy adjustments.

Highlighted Features:

  • 4.5 inches wheel with a 6 amp motor
  • Comes with a durable metal gear case
  • Has a 3-position side handle
  • It operates at 10,000 rpm
  • Spindle lock makes changing accessories simple

2. Craftsman Cordless Angle Grinder for Sharpening Mower Blades

The Craftsman is a well-known brand for its power tools and growing cordless lawn and garden equipment line. It offers a cordless angle grinder that is perfect for anyone who needs to sharpen the blades on their lawnmower.

A motor that spins at 8,500 RPM provides plenty of power for quickly removing nicks and burrs from the blade, and the metal gear housing efficiently dissipates heat.

With the tool-free guard, you can easily adjust the angle of the blade to match the needs of the task at hand. Additionally, the handle is three-position adjustable so that you can adjust the angle depending on what you prefer.

The Craftsman Cordless Angle Grinder For Sharpening Mower Blades comes with a contoured over-molded handle for added comfort. It doesn’t come with a battery or charger, so you must purchase these separately.

It’s small and lightweight, so it’s easy to maneuver, and the 4-1/2 inch grinding wheel provides plenty of power to get the job done fast. The angle grinder also comes with a safety guard to protect your hands.

Moreover, this angle grinder is also perfect for sharpening the blades on edgers and other outdoor equipment.

Highlighted Features:

  • Cast metal gear housing
  • Comes with a 4-1/2 inch grinding wheel
  • Helps to dissipate heat during prolonged use
  • Has an 8,500 RPM motor to sharpen blades quickly
  • Tool-free guard for angle adjustment
  • Three-position adjustable handle
  • Comes with a contoured over-molded handle

3. WORKPRO Light Weight Angle Grinder for Sharpening Mower Blades

If you are looking for a new angle grinder for sharpening mower blades, this one is a great deal. It is a cordless angle grinder that is highly portable and can be carried around.

The angle grinder also comes with a 20V 4.0AH rechargeable lithium ion battery, making it possible for you to work on your task without the hassle of a cable. You can use this inside and outside and it will provide you with plenty of power for a long time.

It has an effective speed of 7500 rpm and is very durable. You can use it on many projects without fear of breaking down.

The small and lightweight body makes it easy to handle, while the middle switch placement ensures that the user has easy access to it. Whether you’re left or right-handed, this machine is easy to operate.

A comfortable auxiliary handle makes the tool easy to grip. The body part has a comfortable, anti-slip rubber material that can withstand high temperatures.

Additionally, it includes a quick-change system/button for the grinding wheel and cutting wheel, which allows you to easily switch between different grits.

This power tool includes five metal cutting wheels, five grinding wheels, a grinding wheel protector, a cutting wheel protector, an anti-vibration side handle, and a fast charger.

Highlighted Features:

  • Portable cordless angle grinder
  • 20V 4.0AH rechargeable lithium-ion battery
  • Has the speed of 7500 rpm
  • Comfortable and anti-slip auxiliary handle
  • Comes with an anti-slip rubber material body
  • Has middle switch placement
  • Has a quick change system/button

4. Dewalt Flexvolt Angle Grinder for Sharpening Mower Blades

If you’re looking for a powerful angle grinder that can easily sharpen a mower blade, Dewalt is a perfect brand to choose. It has long been known to manufacture tools and equipment of the highest quality for use by both professionals and amateurs. The

With this in mind, the Dewalt flexvolt angle grinder was created especially for you. It has a maximum depth of cut of 2-9/16-inch at 90°.

This product is lightweight and compact with an ergonomic design that feels comfortable in your hand. It has a maximum depth of cut of 2-inch at 45°. Moreover, it has an electric brake so that you can stop the blade after releasing the trigger.

It features a powerful motor that delivers up to 9,000 RPM and an integrated LED light that increases visibility and cuts accuracy. You can also store it with the integrated rafter hook.

With a 60V MAX battery that provides extended power and performance, a brushless grinder delivers up to 2x the power. This grinder can handle large jobs thanks to its 4-1/4 – 6 inch wheel.

The Dewalt Flexvolt Angle Grinder For Sharpening Mower Blades comes with a wrench, two flanges, a side handle, and two guards for maximum versatility. If you want to keep your mower blades in good condition, this angle grinder is a must-have.

Highlighted Features:

  • 2-9/16″ maximum depth of cut at 90º
  • Lightweight design for easier handling
  • Maximum depth of cut of 2-inch at 45°
  • Electric brake to stop the blade after releasing the trigger
  • Powerful motor that delivers up to 9,000 RPM
  • Integrated LED light that increases visibility
  • Can be stored with the integrated rafter hook

5. Dewalt Small Angle Grinder for Sharpening Mower Blades

If you need a grinder to sharpen lawn mower blade with overload protection, then this model from Dewalt is the ultimate choice. The angle grinder is a must-have for any home and garden toolbox.

It is designed to allow for fast, easy removal of material, so you can get your projects done faster. The One-Touch Guard eliminates the need for another tool to adjust the guard’s location-it’s easy.

With the ability to reduce downtime with easy blade changing, this small angle grinder will be your go-to for all of your sharpening needs. This angle grinder uses a 7 amp motor that provides 12,000 rpm power for tougher jobs.

Using a hex wrench instead of a spanner wrench makes it possible to remove the wheel without any tools. You can quickly and easily change wheels using the Quick-Change wheel release.

One feature that makes this angle grinder unique is that the side handle can be removed, which is perfect for extended use applications. The Dewalt Small Angle Grinder For Sharpening Mower Blades can operate in either a horizontal or vertical position.

It has an ⅝ inches to 11 inches spindle thread that accepts 4-1/2″ accessories. The product also runs off AC/DC power, which makes it easy to use when needed.

Highlighted Features:

  • Built-in overload protection allows for continuous use
  • Uses a 7 amp motor providing 12,000 rpm power
  • Hex wrench removes wheel without tools
  • Quick-Change wheel release and one-touch guard function
  • Has an 11-spindle thread that accepts 4-1/2″ accessories
  • Runs off AC/DC power

This is the list of the best angle grinder for sharpening lawn mower blades. We hope you enjoyed our reviews and commentary and that it helped you find the right angle grinder for your sharpening needs. You’ll find that all four of these products are capable of doing the job.

Factors to Consider When Buying The Best Angle Grinder for Sharpening Mower Blades

grass blade

Mower blades are made of steel, and like any other sharpening tool, they will eventually become dull. Sharpening a blade with an angle grinder is one of the easiest ways to restore a blade edge on your dull lawn mower blade. It’s also fast, so you won’t have to wait long before you can get mowing again.

However, if you are looking for the best angle grinder for sharpening lawn mower blades, several factors should be considered. Here are some of the most important ones to be aware of.

Grinder Size:

Grinders come in two different sizes, small and large. There are advantages and disadvantages to both of them. Smaller grinders can be moved around easily but are limited in the amount of material they can remove. Large grinders have excellent cutting ability because of their larger motor but they are bulky and hard to move around.

Corded or Cordless Grinder:

You can also consider cordless models with built-in batteries that need charging when they are drained. Cordless grinders are easy to move around because they don’t have a cord attached. However, you will need to wait for the batteries to recharge before you can use it again.

Disc Size:

The size of your grinder wheel determines the material that can be cut at each pass-through on the sharpening process. When cutting thick blades, the larger wheels are needed, but when cutting thin blades, the smaller wheels are needed since there is less material to remove.

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Depending on what kind of material you need to remove from your lawnmower blade, RPM is an important factor when choosing an angle grinder for sharpening mower blade. Blades usually consist of metal alloys and alloy steels which require maximum RPM in order to cut them.

Motor Power:

sharp blades

Motor power is another important factor you should consider when buying an angle grinder for sharpening lawn mower blades. Grinders with lower amps are more suitable for keeping the mulching blade cool during the sharpening process. At the same time, grinders with high amps will be able to remove a thicker amount of material at once, cutting it as well as cooling down as you work.

Safety Clutch:

Having a safety clutch installed on your angle grinder protects the user from moments of unintentional locking or slowing of the wheel during operation. This can result in loss of control and injury to the operator.

Theoretically, a good built-in safety clutch should engage before any damage can occur if a jam occurs because it has a mechanism that mechanically senses when there is a problem with the wheel.

Handle Position:

Angle grinders come in either side-handled or rear-handled design. Side handle is comfortable and preferable in most cases. It provides better balance and allows for two-handed operation, providing greater control and safety when in use.

Rear-handled and lightweight sharpening grinders have only one handle at the back but offer less control over the grinder because of its lighter weight, lack of balance, and difficulty moving around.

Spindle Lock:

Most angle grinders have a spindle lock feature built into them so you don’t have to hold down the paddle switch while removing or installing a new grinding wheel on the grinder.

When you turn the spindle lock on, it locks the grinder’s spindle and  stops the tool from rotating during wheel replacement. This is a great feature for both professionals and non-professionals alike.

Dissipates Heat:

sharp blade

An angle grinder that dissipates heat properly is important to have because prolonged use of grinders without effective cooling can result in decreased motor performance or failure, causing a possible hazard to the user while working with it.


As always, your budget is the last thing you should consider when buying an angle grinder for sharpening lawn mower blades. But if you want to get the best value for money, read reviews and compare models of different brands before making a purchase. A quality grinder that is made of high-end material and will stay with you for a long time means that even if you pay a little bit more for it, your purchase will still be worth every penny.


How to Sharpen Mower Blades with an Angle Grinder?

You’ll need to remove the dull mower blade. To remove it, loosen or remove your bolts, then slide it out. Make sure the angle grinder is off and unplugged.

Place the lawnmowers blade flat on a solid surface and use the grinder to cut both ways across the surface in an X shape. You will want to grind in one direction only and not “back and forth” as this may damage the blade.

Don’t put much pressure on. Simply guide it along with even strokes. Go over each line about four times each, then check your progress by cutting into any grooves that have formed.

When grinding one side of the mower blade, flip it over and finish up on the other side. Keep going until you can see a razor sharp edge all the way across. Now, give it a quick rinse with the hose, and you’re ready to get back to mowing.

What Kind of Disk to Use on an Angle Grinder to Sharpen Riding Mower Blades?

unbalanced blade

The disk you should use has to be 40 or 30 grit. You need to use only these grits because they are coarse enough to grind the metal off quickly but not so coarse that they will damage or warp the mower blade.

Which Amp Angle Grinder Should I Use to Sharpen Lawn Mower Blades?

The higher the amps for an angle grinder, the more power it will have. When dealing with thicker steel mower blades, this is useful.

How Do Professionals Sharpen Lawn Mower Blades?

Most professionals recommend using an angle grinder. Some people may choose a pedestal or bench grinder as well, but this is not as common. Sharpening lawnmower blade with a bench grinder is time-consuming and requires a lot of skill.

How Often Should You Sharpen Mower Blades?

This depends on a variety of factors. How often you mow your lawn and the type of grass you have could affect how long your lawnmower blade will last before being sharpened again. On average, you need to sharpen the blade after 20 to 25 hours of mowing.

What Tools Do You Need to Sharpen Mower Blades with an Angle Grinder?

Safety glasses are also important because even though you are wearing a mask, there is still the chance that something could fly off the blade and hit you. A pair of heavy-duty protective gloves is also recommended since you will be holding onto a spinning blade, which can get very hot after prolonged use.


An angle grinder is a useful garden tool to have around the home, and like any other power tool, it’s one that you’ll use for many different tasks. When you own the best angle grinder for sharpening mower blades, there are several different jobs you’ll be able to perform.

Sharpening mower blades with an angle grinder is quick and efficient, allowing you to get back to the task at hand. Lawn mower maintenance should become a regular part of your routine since it impacts the overall performance of your mower.

We hope this article has provided you with all the information you need to know regarding choosing a high-quality angle grinder for sharpening lawn mower blade.

5 Best Angle Grinder for Sharpening Mower Blades in 2024

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