Router Bits

CNC Router Bits and Profile Wheels for Stone

CNC router bits are precision-engineered diamond tools designed to profile, shape, and finish stone edges on automatic edge polishing machines and CNC centers. From classic full-bullnose and half-bullnose profiles to eased edges and ogee shapes, router bits determine the edge quality and production speed of every stone countertop. Whether you are running a Comandulli, Marmoelettromeccanica, Brembana, or any other CNC machine, selecting the right router bit diameter, profile radius, and arbor size is critical for consistent results.

Buying Guide

When selecting CNC router bits for stone, start by identifying your machine's spindle diameter and bore size. The most common sizes are 20mm, 30mm, 40mm, and 45mm. Next, select the profile radius that matches your desired edge shape: r5 eased edge, r10 half-bullnose, r20 round edge, or full bullnose. Material compatibility matters too. Granite and quartzite require harder bond diamond segments, while marble and softer stones work well with softer bonds for faster material removal. Finally, consider wet vs. dry operation. Most CNC router bits require water cooling for both performance and diamond life.

Our Selection

Dynamic Stone Tools carries a comprehensive selection of CNC router bits from leading manufacturers including Marmoelettromeccanica, Weha, Alpha Professional Tools, and specialty CNC tooling brands. We stock the most popular sizes and profiles in 20mm, 30mm, 40mm, and 45mm bore diameters for compatibility with all major CNC edge machine brands. Our Manassas Park, VA warehouse ensures fast East Coast delivery, minimizing machine downtime and keeping your production moving.

FAQ

Q: How do I know which router bit diameter to order?

A: The diameter refers to the spindle bore of your CNC machine's tooling holder. Check your machine manual or measure the existing bit shank. Common sizes are 20mm, 30mm, 40mm, and 45mm. Ordering the wrong size means the bit will not fit your machine.

Q: How long should a CNC router bit last?

A: Lifespan varies based on material hardness, RPM, feed rate, and water cooling. On granite, a quality router bit typically profiles 200 to 500 linear meters before requiring replacement or redressing. On marble and softer stones, expect significantly longer tool life.

Q: Can I use a granite router bit on engineered quartz?

A: Engineered quartz is abrasive and requires harder bond diamond tooling compared to natural granite. Using a granite-grade bit on quartz will result in accelerated wear. Look for bits specifically rated for engineered stone or quartz.