Sandvik Coromant 6255472 Hydraulic Tool Chuck C4 12mm

Product Description

The SANDVIK COROMANT 6255472 is a hydraulic tool chuck designed for precision machining applications. It uses a C4 modular connection shank interface and accepts tooling with a 12 mm (0.4724 inches) hole diameter. The chuck delivers a 100 mm projection and a 41 mm clamping depth, providing stable tool holding with minimal runout. Balanced to 39,000 RPM, it is suited for high-speed milling, drilling, and reaming operations. Through-coolant capability directs cutting fluid directly to the cutting zone, extending tool life and improving chip evacuation. This chuck is installed by CNC machinists and toolroom technicians in production and job-shop environments.

This hydraulic chuck is intended for use with C4 modular tooling systems on machining centers and turning centers equipped with a compatible modular connection interface. The 22 mm nose diameter and 41 mm clamping depth make it appropriate for applications requiring close-clearance access and secure tool retention. Through-coolant support makes it well suited for deep-hole drilling and high-feed milling cycles where heat and chip management are critical. Typical installation occurs in horizontal and vertical machining centers running ferrous and non-ferrous materials at elevated spindle speeds.

Key Features

• C4 modular connection shank interface for quick-change compatibility
• 12 mm tool hole diameter with 41 mm clamping depth for secure tool retention
• Balanced to 39,000 RPM for high-speed machining applications
• Through-coolant design channels fluid directly to the cutting edge
• 22 mm nose diameter supports close-clearance and tight-pocket work
• 100 mm projection accommodates a range of workpiece setups

Compatibility

Designed for use with C4 modular connection tooling systems. Accepts shank tooling with a 12 mm hole diameter. Confirm spindle interface and projection requirements against machine specifications before installation.

Installation Notes

Installation and tool changes should be performed by a qualified CNC machinist or toolroom technician with the spindle at a full stop and machine power isolated per facility lockout/tagout procedures. Verify that the modular connection mating surfaces are clean and free of chips or burrs before seating the chuck. Confirm that coolant lines are properly connected and unobstructed before resuming through-coolant operation. Follow the machine tool builder guidelines and applicable shop safety standards when setting tool length offsets and runout checks.