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The ISCAR 4561256 is a rotary tool holder cooling tube designed for use with HSK shank tooling systems. It delivers coolant directly through the tool holder assembly, helping to manage heat at the cutting zone and extend tool life in machining operations. At 0.5 pounds, it is a lightweight, drop-in replacement component. This part is installed by machinists and CNC tooling technicians performing maintenance or configuration changes on HSK-mount tooling setups in milling and machining center applications.
This cooling tube is suited for shop environments running HSK-style tooling on CNC machining centers. It is specifically compatible with the HSK63A taper size, making it a direct-fit component for tool holders using that interface. Typical use cases include production machining cells where through-coolant delivery is required for high-speed cutting operations. Tooling technicians replacing worn or damaged cooling tubes on existing HSK63A holders will find this a straightforward swap.
Designed for use with HSK shank tool holders compatible with HSK63A taper size.
Installation should be performed by a qualified CNC tooling technician or machinist. Before servicing the tool holder assembly, confirm the spindle is powered down and the machine is in a safe, locked-out state per applicable shop safety procedures. Avoid over-tightening or forcing the cooling tube during seating, as HSK tooling components are precision-fit. Verify coolant passage alignment after installation before returning the holder to service.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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