What size asphalt saw blade do I need?
Leave a message
When it comes to asphalt cutting, one of the most critical decisions you'll make is choosing the right size of the asphalt saw blade. As a seasoned supplier of asphalt saw blades, I've witnessed firsthand the impact that the blade size can have on the efficiency, quality, and overall success of an asphalt cutting project. In this blog, I'll guide you through the factors to consider when selecting the appropriate blade size and provide some practical recommendations.
Understanding the Basics of Asphalt Saw Blades
Before delving into the blade size selection, it's essential to understand the basic components and functions of an asphalt saw blade. Asphalt saw blades are typically made of a metal core with diamond segments attached to the outer edge. The diamond segments are responsible for cutting through the hard asphalt surface, while the metal core provides stability and support.
The size of an asphalt saw blade is usually measured in either millimeters or inches. The diameter of the blade is the most important dimension, as it determines the maximum cutting depth. Other factors to consider include the blade thickness, the number of segments, and the segment size.
Factors to Consider When Choosing the Blade Size
Cutting Depth
The cutting depth is one of the primary factors to consider when choosing an asphalt saw blade. The blade diameter should be large enough to achieve the desired cutting depth. As a general rule of thumb, the blade diameter should be at least twice the cutting depth. For example, if you need to cut asphalt to a depth of 2 inches, you should choose a blade with a diameter of at least 4 inches.
However, it's important to note that the cutting depth is also limited by the saw's power and the blade's design. A larger blade may require more power to operate, and if the saw is not powerful enough, it may result in a slower cutting speed or even damage to the blade or the saw.
Saw Compatibility
Another important factor to consider is the compatibility of the blade with your saw. Different saws have different arbor sizes, which is the diameter of the hole in the center of the blade that fits onto the saw's spindle. Make sure to choose a blade with an arbor size that matches your saw's arbor size.
In addition, some saws are designed to work with specific blade sizes and types. Check your saw's manual or consult with the manufacturer to ensure that the blade you choose is compatible with your saw.
Project Requirements
The nature of your asphalt cutting project will also influence the blade size selection. For small-scale projects, such as cutting through a narrow crack or making a small repair, a smaller blade may be sufficient. On the other hand, for large-scale projects, such as cutting through a wide roadway or a large parking lot, a larger blade may be more efficient.
Consider the type of asphalt you'll be cutting as well. Different types of asphalt have different hardness levels, and some may require a more aggressive blade with larger segments or a higher diamond concentration.
Cost
Cost is always a consideration when making any purchasing decision. Larger blades generally cost more than smaller blades, and the cost also depends on the quality and brand of the blade. While it may be tempting to choose a cheaper blade, keep in mind that a high-quality blade may last longer and provide better cutting performance, which can ultimately save you money in the long run.
Common Blade Sizes and Their Applications
14 Inch Asphalt Saw Blade
A 14 Inch Asphalt Saw Blade is a popular choice for many asphalt cutting projects. With a diameter of 14 inches, it can provide a cutting depth of up to 7 inches, which is suitable for most medium to large-scale projects. This blade size is commonly used for cutting through roadways, parking lots, and driveways.


The 14-inch blade is versatile and can be used with a variety of saws, including walk-behind saws and skid steer saws. It offers a good balance between cutting speed and cutting depth, making it a practical choice for many contractors.
400mm Ashpalt Saw Blade
The 400mm Ashpalt Saw Blade is another common size used in asphalt cutting. With a diameter of 400mm (approximately 15.7 inches), it can provide a slightly deeper cutting depth compared to the 14-inch blade. This blade size is often used for more heavy-duty projects, such as cutting through thick asphalt layers or for large-scale road construction.
The 400mm blade is typically used with larger, more powerful saws, and it requires a higher level of skill and experience to operate safely. However, it can offer faster cutting speeds and better performance for demanding applications.
Other Considerations
Blade Quality
In addition to the blade size, the quality of the blade is also crucial. A high-quality blade will have better diamond segments that are more durable and can provide a cleaner and more efficient cut. Look for blades that are made from high-quality materials and have a reputation for reliability.
Safety
Safety should always be your top priority when working with asphalt saw blades. Make sure to wear appropriate safety gear, such as safety glasses, ear protection, and a dust mask. Follow all safety instructions provided by the saw and blade manufacturers, and never operate the saw without proper training.
Conclusion
Choosing the right size of asphalt saw blade is essential for achieving optimal cutting performance and ensuring the success of your asphalt cutting project. Consider the cutting depth, saw compatibility, project requirements, and cost when making your decision. Whether you choose a 14 Inch Asphalt Saw Blade or a 400mm Ashpalt Saw Blade, make sure to select a high-quality blade that is compatible with your saw and meets the specific needs of your project.
If you're still unsure which blade size is right for you or have any other questions about asphalt saw blades, don't hesitate to reach out. As a trusted supplier of asphalt saw blades, we have the expertise and experience to help you make the best choice for your project. Contact us today to discuss your requirements and start the purchasing process.
References
- "Diamond Saw Blades: A Guide to Selection and Use." Construction Equipment Guide.
- "Asphalt Cutting Basics." National Asphalt Pavement Association.






