Sandvik Coromant 6255485 Hydraulic Tool Chuck C6 12mm

Product Description

The SANDVIK COROMANT 6255485 is a hydraulic tool chuck with a C6 modular connection shank, designed for high-precision CNC milling and machining center applications. It accepts a 12 mm (0.4724 inches) bore diameter and delivers clamping force through hydraulic expansion, providing superior runout accuracy compared to collet-style holders. Rated to 20,000 RPM and equipped with through-coolant capability, this chuck suits demanding high-speed finishing and semi-finishing operations where tool life and surface finish are critical. The overall length is 230 mm (9.06 inches) with a 192 mm projection and a 22 mm nose diameter.

This hydraulic chuck is intended for use in machining centers equipped with C6 modular interface tooling systems. The 41 mm clamping depth accommodates standard shank tooling in that bore size. It is well suited to high-speed spindle applications in aerospace, die-mold, and general precision machining environments. A licensed machinist or CNC tooling technician typically handles setup and presetting. No specific compatible machine models were provided in the product data; verify C6 modular interface compatibility with your machine spindle before ordering.

Key Features

• Hydraulic clamping mechanism delivers consistent, high-accuracy tool holding with minimal runout
• C6 modular connection shank for compatibility with modular tooling systems
• 12 mm bore diameter with 41 mm clamping depth for secure tool engagement
• Balanced and rated to 20,000 RPM for high-speed machining operations
• Through-coolant design directs coolant directly to the cutting zone
• 192 mm projection and 22 mm nose diameter suit deep-reach and tight-clearance work

Compatibility

Designed for use with C6 modular connection spindle interfaces. Accepts 12 mm shank tooling. Verify your machine spindle interface and tool shank diameter before installation.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician familiar with modular tooling systems. Always power down and lock out the machine spindle before changing or seating tooling. Use the appropriate torque wrench and clamping screws specified for C6 modular assemblies — do not overtighten by hand or use improvised tools. Confirm tool runout with a dial indicator after setup and before resuming cuts.