Schunk 206478 Hydraulic Tool Chuck CAT50 1-1/4 in 15000 Rpm

Product Description

The SCHUNK 206478 is a hydraulic tool chuck with a CAT50 taper shank, designed for high-precision CNC machining applications. The hydraulic clamping mechanism delivers consistent radial runout of 0.003 mm TIR, making it suitable for finish milling, reaming, and other operations where accuracy directly affects part quality. The chuck accepts a 1-1/4 inch bore diameter and supports spindle speeds up to 15,000 RPM. Through coolant capability allows cutting fluid to be directed straight to the tool tip, improving chip evacuation and tool life in deep-cavity or high-feed operations. Installation is handled by CNC setup technicians and toolroom machinists.

This hydraulic chuck is used in CAT50-spindle machining centers in both production and job-shop environments. The 81 mm projection and 50 mm clamping depth suit applications where moderate reach is needed without sacrificing rigidity. The 72 mm nose diameter is consistent with standard CAT50 hydraulic chuck form factors. Through coolant support makes it appropriate for machining centers equipped with high-pressure coolant systems. It is well suited for ferrous and non-ferrous cutting operations requiring tight tolerances.

Key Features

• CAT50 taper shank for direct mounting on CAT50 machining center spindles
• Hydraulic clamping delivers 0.003 mm TIR for precision concentricity
• 1-1/4 inch (31.75 mm) bore accepts a wide range of straight-shank tooling
• Rated to 15,000 RPM for high-speed machining operations
• Through coolant compatible for direct coolant delivery to the cutting edge
• 50 mm clamping depth provides secure tool grip under heavy cutting loads

Compatibility

Designed for use in machining centers with CAT50 spindle interfaces. Compatible with straight-shank cutting tools with a 1-1/4 inch shank diameter.

Installation Notes

Installation should be performed by a qualified CNC toolroom machinist or setup technician. Power down and lock out the machining center spindle before mounting or removing the chuck. Use the appropriate CAT50 pull-stud specification for the target machine spindle and verify drawbar engagement before operation. Confirm through-coolant port alignment with the machine spindle coolant passage before running coolant at pressure.