HSK (hollow taper shanks)

DIN 69063-1 (ISO 12164-1) Form A Standard type for machining centres and milling machines. HSK for automatic tool change with gripper groove and index notch. Manual operation is via access hole in taper.

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❺ ❹ ❽ Term definitions of HSK-A interface for automatic tooling systems

Gripper groove: circular groove
Index notch: sickle-shaped notch across gripper groove
Keyway on collar: index notch or for attachment in tool magazine or grippers.
Coding/identification: bore in collar for attachment of identification system (coding chip)
Thread for coolant: for attachment of coolant supply set
Keyway on taper shank: form closed torque transmission to spindle
Radial bore in taper shank: necessary for manual clamping systems
Clamping shoulder: circular chamfer for drawing in the tool
Position of the tool edge of single-edged tools