Understanding the components of your diamond blade is essential for making informed decisions on the job site. Whether you're a construction professional or a homeowner, knowing how each part of a diamond blade functions can help you save time, extend blade life, and reduce the risk of injury.

In this post, we will break down the anatomy of a diamond blade and explain the purpose of each key component.

Segments

The segment is often referred to as the “teeth” of a diamond blade. A segment consists of two main parts: the bond and the diamonds. Unlike woodcutting blades, segments do not slice through material. Instead, they grind away the material using the diamonds embedded in the segment, which are responsible for the cutting action.

The number, quality, and size of the diamonds in each segment are critical factors in determining the cutting speed and lifespan of the blade. The bond holds the diamonds in place within the segment, allowing them to continually grind through the material.

Harder bonds are more effective for cutting soft, abrasive materials, while softer bonds are best suited for cutting harder materials. As the blade wears down, the bond erodes, exposing fresh diamonds and enabling the blade to keep grinding effectively.

Gullet

The gullet is the hollow space between two segments of the diamond blade. Its primary function is to help expel material as it is being cut.

Gullets come in various sizes and shapes, but generally speaking, the larger the gullet, the faster the cutting speed. A larger gullet reduces drag, which in turn increases efficiency and improves cutting performance.

Core

The core of a diamond blade acts as the structural support for the segments and other blade components. The core is typically attached to the segments through various methods, with laser-welding providing the most durable and secure bond.

The core must be able to withstand the extreme stresses and heat generated by high-powered equipment, which is why a strong bond between the core and segments is essential for the blade’s durability.

Arbor

The arbor is the central hole in the diamond blade that allows it to attach to the cutting equipment. The arbor diameter varies depending on the type of equipment the blade is designed for.

For example, Esch cut-off saw blades are available in both 1-inch and 20-millimeter arbor diameters. Most arbors are circular, but some blades feature different shapes based on specific equipment requirements. Ensuring that the saw’s arbor matches the blade’s arbor is crucial for optimal blade performance and longevity. For more details, read our post on using blades without arbor bushings.

Directional Arrow

Esch diamond blades feature a stamped or etched directional arrow near the center of the blade. This arrow serves as a guide for operators, indicating the correct direction for mounting the blade on the saw.

Proper blade mounting ensures efficient cutting and helps maintain the safety and performance of your equipment.

For more information on choosing the right diamond blade for your application, check out our guide on Diamond Blade Troubleshooting and Diamond Blade Technical Facts pages. and page. Also, be sure you know for your cutting application.