Showa HSKA100-HPC06M-155 HSK 100 Milling Chuck, 49 NM, 155 mm, Coolblast, Slotted Bore Design

The Showa HSKA100-HPC06M-155 is an HSK 100 milling chuck, also classified as a micron chuck, designed for machining center applications such as heavy milling of titanium and high-temperature alloys. It features an HSKA100 shank size and is engineered with a direct clamping mechanism that provides high gripping force, typically up to five times tighter than standard ER40 collet chucks. The internal diameter (I.D.) is 6 mm, providing a minimum clamping power of 49 NM. The tool holder has a gauge line length of 155 mm. Technical features include a special slotted bore design to increase holding power and reduce vibration, alongside integrated Coolblast coolant-thru grooves for efficient cooling during operation. The assembly utilizes a machined bearing cage with high-precision needle bearings for smooth operation, and the nut is designed to sit flush against the flange to prevent damage from over-tightening. This series is designed to ensure the cutter does not move axially during clamping, which is critical for maintaining close tolerances in mass manufacturing. The unit is compatible with straight reduction sleeves and typically includes a coolant pipe, while accessories like chuck wrenches and adjustment screws are sold separately. The recommended cutter shank diameter for use with this chuck is H7 or better. No year of manufacture is available for this specific unit.