Collets

About

A collet for your CNC is a key machine tool for your CNC spindle. It allows you to carry out a wide range of applications with just one machine by letting you switch tools easily. Collets are a type of clamp and are designed to hold a tool or workpiece in place to provide excellent precision. These act as the connector between the machine and the bit you’re using and use spring steel with a cylindrical inner surface and a conical outer surface. The tool fits against the inner surface, and the outer surface fits into the machine, which is tightened with an external nut to contract the inner surface around the tool for a secure and constant self-centralising pressure. Collets are known to be a superior type of chuck for machine tools because they’re the only ones that constantly and reliably offer a strong clamping force. These give you a self-centring effect with a very low run-out to resist loosening and still allow you to swap tools quickly. While other types of chuck let you have one clamp to fit a wide range of tool sizes, collets are made for specific tool sizes or a smaller range of sizes, which is why they are provided in singles for one tool or sets for you to have a collet for every tool. Our Range ER Collets Here at Rennie Tool Company, we stock a wide range of ER collets for various tools. We offer single collets in various sizes and even sets in different sizes to help you get exactly what you need for your tools and applications. Our collets are ER and offer sizes from as little as ER11 to as large as ER40 for you to easily find the perfect collet for your machine. Each collet for your CNC and other machines suzh as lathes is made to a high standard to give you quality ER spring collets you can rely on. These are perfect for holding a variety of tools, especially endmills, router cutters and drills, and help you use only one machine for a range of applications and projects. ER collets are designed to perform well when holding round-section workpieces wit