CNC collets are essential tool-holding devices designed to securely grip cutting tools—such as end mills, drills, and routers—in CNC machines. Whether you're operating a manual mill or a high-speed machining center, collets play a critical role in ensuring precision, stability, and reduced tool runout during operation.
Explore our full selection of ER collets, R8 collets, and SK/BT/HSK collet systems, all engineered for consistent performance across a wide range of machining applications.
ER Collets - Versatile, Self-Centering Tool Holders
ER collets are the most common collet type used in CNC milling and drilling. These slotted, conical sleeves fit into ER collet chucks and compress evenly around the tool shank when the nut is tightened.
Best for: General-purpose machining, round shank tools, end mills, and drill bits
Key Features of ER Collets:
R8 Collets - Direct Fit for Manual Milling Machines
R8 collets are commonly found on manual mills such as Bridgeport-style machines. They fit directly into the spindle and are secured with a drawbar, eliminating the need for a separate collet chuck.
Best for: Manual milling machines, general machining
Key Features of R8 Collets:
SK, BT, and HSK Collet Systems - High-Performance CNC Tool Holders
These industrial-grade collet systems are used in advanced CNC machining centers. Unlike standard collets, SK, BT, and HSK holders integrate both the spindle taper and tool holder, delivering exceptional rigidity, balance, and automation support.
SK Collets
Best for: European CNC machines, automatic tool changers
BT Collets
Best for: High-speed machining in automated environments
HSK Collets
Best for: Ultra-high precision CNC machining and 5-axis systems
Selecting the correct collet system is key to optimizing tool life, machining precision, and production efficiency. Whether you're running high-speed CNC routers or traditional vertical mills, we offer the tool-holding solutions you need to get the job done right.