An HSK63 is a high-speed, precision CNC tool holder with a 63mm diameter shank, designed for high-speed machining on CNC machines, especially those with automatic tool changers. It is a specific type within the broader HSK (Hollow Shank Taper) system, known for its symmetrical, dual-contact design that provides rigidity, accuracy, and high-precision performance. The “63” refers to the nominal diameter of the tool holder’s taper, and it is often found in HSK-F (for high-speed, high-frequency spindle applications) and other styles.
Key features and characteristics:
- HSK system: Part of a German-developed standard for tool holders that prioritizes precision and performance.
- HSK63 size: The “63” denotes the nominal diameter of the taper, making it a popular size for woodworking and general CNC machining centers.
- High-speed capability: Designed for high rotational speeds, making it suitable for applications requiring high spindle speeds.
- Precision and accuracy: HSK63 holders are precision-balanced and have tight runout tolerances (often <0.003 mm) to ensure high-quality finishes and accuracy.
- Symmetrical and rigid design: Features a hollow shank with a taper that creates dual contact points with the machine spindle, providing greater rigidity and stability compared to older designs like BT tool holders.
- Materials and durability: Made from high-quality steel and often case-hardened and polished for corrosion resistance.
- Automatic Tool Change: Its design is well-suited for use with automatic tool changers on CNC machines.
