Knight 4" Diamond Cutting Disc

Key features include a 4\" diameter, a maximum operating speed of 12,000 RPM, heat-resistance, rust-resistance, and a design focused on lightweight handling and long-lasting sharpness for cutting stone, tiles, and other hard materials with an angle grinder.

Ensure your grinder is compatible with a 4\" diamond cutting disc and rated for up to 12,000 RPM. Mount the disc securely with the grinder’s guard in place, wear appropriate PPE (eye protection, gloves, hearing protection), and start at a low speed, feeding steadily to avoid binding or overheating.

According to the description, it’s suitable for cutting stone, tiles, and other hard materials, making it a versatile choice for masonry and tile work.

Yes. The product is described as heat-resistant and rust-resistant, which helps maintain performance in varied work conditions.

The primary differences are diameter and intended use: the 4\" disc offers greater precision for tight cuts; the 4.5\" and 7\" variants are larger and may cover more surface area for bigger cuts. For reference, you can explore Knight 4.5\" Diamond Cutting Disc and Knight 7\" Diamond Cutting Disc on Fepy: https://fepy.com/product/knight-4-5-inch-diamond-cutting-disc and https://fepy.com/product/knight-7-inch-diamond-cutting-disc.

Always wear eye protection, gloves, and hearing protection. Use the grinder guard, ensure the disc is in good condition, and avoid side loading or twisting. Let the tool reach full speed before cutting and maintain a stable workpiece to prevent kickback.

The disc is described as durable and long-lasting, with diamond segments designed for longevity. Actual lifespan depends on factors such as the material being cut, cutting technique, and frequency of use.

Store in a dry, cool place away from moisture to preserve rust resistance and overall integrity. Keep it in a protective container or on a rack where it won’t be damaged by other tools.

Use a steady, moderate feed rate; avoid forcing the disc; keep the workpiece well-supported; use the appropriate guard; and replace the disc if you notice glazing, cracks, or significant dulling of the cutting edge.

Yes. If you’re considering different sizes, you might look at Knight 4.5\" Diamond Cutting Disc (https://fepy.com/product/knight-4-5-inch-diamond-cutting-disc) and Knight 7\" Diamond Cutting Disc (https://fepy.com/product/knight-7-inch-diamond-cutting-disc) to match your project needs.