Schunk 1447901 Hydraulic Tool Chuck CAT40 3/4 in

Product Description

The SCHUNK 1447901 is a hydraulic tool chuck designed for CAT40 taper shank spindles in CNC machining centers. Hydraulic expansion technology delivers uniform clamping pressure around the tool shank, resulting in high concentricity and reduced vibration at elevated spindle speeds. This chuck is balanced to 25,000 RPM and features a 3/4 inch (19.05 mm) bore with through-coolant capability, making it suited for deep-hole drilling, reaming, and high-speed milling operations where coolant delivery at the cutting edge is required. Licensed machinists and CNC setup technicians are the primary installers.

This hydraulic chuck is intended for use in CAT40 spindle tooling systems on vertical and horizontal machining centers in production and job-shop environments. The 101.6 mm projection and 42 mm nose diameter make it appropriate for applications requiring moderate tool reach with a compact nose profile. Through-coolant support allows direct fluid delivery to the cutting zone without external nozzle setups. The 41.5 mm clamping depth provides secure tool engagement for end mills, drills, and reamers with 3/4 inch shanks.

Key Features

• CAT40 taper shank connection for direct spindle mounting on CAT40 tooling systems
• Hydraulic clamping with TIR of 0.003 mm for high concentricity and surface finish repeatability
• Balanced to 25,000 RPM for high-speed machining applications
• Through-coolant compatible for direct coolant delivery to the cutting edge
• 41.5 mm clamping depth provides firm tool engagement on 3/4 inch shank tooling
• 101.6 mm projection and 42 mm nose diameter for moderate reach with compact profile

Compatibility

Designed for use with CAT40 spindle tooling interfaces on CNC machining centers accepting 3/4 inch shank cutting tools with through-coolant capability.

Installation Notes

Installation should be performed by a qualified CNC machinist or tooling technician. Spindle must be fully stopped and machine must be in a safe, locked-out state before chuck installation or tool changes. Clean the CAT40 taper and spindle bore thoroughly before seating the chuck to ensure proper contact and runout performance. Do not exceed the balanced RPM rating of 25,000 RPM in operation.