What Grit Grinding Wheel to Sharpen Mower Blades? | Expert Guide.

A 36-grit grinding wheel is best to sharpen mower blades. Mower blades can become dull over time, which can result in an uneven and untidy cut.

To keep your lawn looking neat and tidy, it is important to sharpen your mower blades regularly. One of the most crucial factors in achieving an effective sharpening process is selecting the right grit grinding wheel. Mower blades require a coarse grinding wheel with a 36-grit rating to ensure optimal performance.

A wheel with a lower grit rating may not remove enough metal, while a wheel with a higher grit rating may remove too much metal, damaging the blade’s structural integrity. It is essential to maintain the proper angle while sharpening to ensure a sharp edge and lengthen the lifespan of your mower blades.

What Grit Grinding Wheel to Sharpen Mower Blades? | Expert Guide.

Credit: www.homedepot.com

Understanding Grit Grinding Wheels

Grit grinding wheels are an essential tool in mower blade maintenance. These wheels are abrasive discs used to sharpen and smooth blades. Grit grinding wheels are available in different sizes, types and materials, ranging from coarse to fine grit. Coarse grit is great for removing rust and chips while fine grit is perfect for honing the blade and adding sharpness.

Understanding the grit grinding wheel’s definition, function, and types is key to choosing the right one for the job. Types of grit grinding wheels in the market include aluminum oxide, silicon carbide, diamond, and cubic boron nitride. Each type has its unique qualities that affect its performance and durability.

Factors To Consider When Choosing A Grit Grinding Wheel

Choosing the right grit grinding wheel can significantly improve the functionality of your mower blades. Blade material and hardness, blade condition, desired sharpness of blade, grinder type, and user skill level are factors to consider when making a selection. You can determine the material and hardness of the blade by checking the specifications provided by the manufacturer.

You May Also Like:  What Can I Use Instead of Loctite? - Alternative Solutions

Use a coarse grit wheel for blades with nicks and dents, and a finer grit wheel for sharpening. Angle grinders and bench grinders are commonly used types of grinders. If you’re not skilled enough, it’s best to consult with an expert before attempting to sharpen your blades yourself.

The correct selection of a grit grinding wheel will ensure that your blades’ lifespan is extended, and maximum efficiency is achieved.

Choosing The Right Grit Size

Choosing the right grit size is crucial when it comes to sharpening mower blades. Grit size affects sharpness by determining the size of the abrasive particles. The larger the grit size, the coarser the abrasive particles, resulting in a rougher, less sharp finish.

However, larger grit sizes also remove more material at a faster rate. Material removal rate is essential to consider, as removing too much material can shorten the lifespan of the mower blade. Other factors to consider when selecting grit size include blade hardness, use frequency, and sharpening tool type.

It is essential to weigh all of these factors to choose the appropriate grit size for the best sharpening outcome.

Recommended Grit Sizes For Different Blade Materials

The recommended grit size for steel mower blades is between 36 and 60. For aluminum blades, a grit size of 80 is best. Carbon fiber mower blades need a finer grit size of 120 to 220, while ceramic blades need a grit size of 80 to 120.

It’s important to choose the right grit size for the blade material to ensure a clean and efficient sharpening process. The wrong grit size can cause the blade to become too thin or even break during use. Always wear protective gear and use caution when sharpening mower blades.

Proper maintenance of mower blades can extend their lifespan and save you money in the long run.

Grit Grinding Wheel Maintenance

Maintaining your grit grinding wheel is crucial for optimal performance when sharpening mower blades. To ensure your wheel’s longevity, it is important to clean it periodically. Using a wire brush, gently scrub the wheel’s surface to remove any dust or debris.

You May Also Like:  How to Remove Backing from Mirror: A Step-by-Step Guide.

Dressing the wheel is also important to keep it running smoothly. Use a diamond dresser to restore the wheel’s shape and remove any glazing or contamination. Maintaining consistent balance is critical to prevent any wobbling or vibrations during sharpening. Checking your wheel’s balance regularly helps ensure precision cuts and reduces the risk of damaging your mower blades.

With proper maintenance, your grit grinding wheel will last longer and provide superior sharpening results.


After reading this guide, you should now grasp the importance of selecting the right grit grinding wheel for sharpening your mower blades. Whether you decide to use a coarse, medium, or fine grinding wheel, it is crucial to properly maintain your blades for efficient mowing.

If you opt for a coarse wheel, you should use it for very dull or damaged blades to ensure you won’t damage the blade edge. Meanwhile, a medium-grit wheel helps in removing rust and rough edges. Lastly, a fine-grit wheel will effectively sharpen and put a polished finish on the blades.

Remember that the quality of your sharpening job influences the quality of your mowing results. Don’t forget to wear protective gear while sharpening and always check the sharpness of your blades before mowing. With these tips in mind, you can prolong your mower’s life and achieve a pristine cut every time.