Jul. 30, 2025
HSK tools play a vital role in CNC machining. They primarily refer to a tool interface, derived from the German word "HohlSchaft Kegel,"
meaning hollow conical shank. HSK tools are standardized according to German DIN 69873 and come in six different sizes: HSK-A, HSK-B, HSK-C, HSK-D, HSK-E, and HSK-F.
Three types are commonly used: HSK-A (with internal coolant and automatic tool change), HSK-C (with internal coolant and manual tool change),
and HSK-E (with internal coolant and automatic tool change, high-speed).
Types of HSK Tools
HSK tools come in various sizes, including Type A, Type B, Type C, Type D, Type E, and Type F. HSK-A is the most commonly used, accounting for approximately 98% of the total.
Type A has a drive groove, while Type E does not. Therefore, Type A transmits higher torque and is suitable for heavier cuts.
Type E, on the other hand, transmits less torque and is limited to lighter cuts. E-type and F-type tools are similarly named,
but the F-type tool has a smaller taper. This means that the flange diameter of the E63 and F63 is the same φ63, but the taper size of the F63 is the same as that of the E50.
Therefore, the F63 has a faster speed (due to a smaller spindle bearing) than the E63.
BRIGHT-TOOLS HSK Tool Features and Advantages
High Precision: HSK tools utilize a double-sided contact system, where the tool's 1:10 taper contacts the machine tool's spindle bore,
while the tool's flange also maintains close contact with the spindle face. This design improves machining accuracy.
High Rigidity: Thanks to their hollow tapered shank design,
HSK tools maintain high rigidity during high-speed machining, reducing vibration and deformation.
High Speed: HSK tools are suitable for high-speed machining, with spindle speeds reaching tens of thousands of rpm,
meeting the high-efficiency and high-precision demands of modern manufacturing.
Easy to change tool: The HSK tool system supports automatic tool change function, which can greatly improve processing efficiency.
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