Iscar 4561575 End Mill Holder C6 Modular 1.5in Hole Through Coolant

Product Description

The ISCAR 4561575 is a modular connection end mill holder designed for CNC machining centers and milling operations that demand rigid toolholding with integrated coolant delivery. Built on a C6 modular connection shank, this holder accepts end mills with a 1.5-inch bore and features a 3-inch nose diameter with a 3.5-inch projection. Through-spindle coolant is routed directly through the holder to the cutting tool, improving chip evacuation and extending tool life in demanding milling applications. A TIR of 0.0002 inches supports precision work where runout directly affects surface finish and tool wear.

This holder is suited for production milling environments in aerospace, die and mold, and general metalworking shops. It installs on machine spindles equipped with C6 modular connection interfaces, making it compatible with modular tooling systems that use that interface standard. The 3.5-inch projection length provides clearance for deep-pocket milling and side-wall operations where standard-length holders cannot reach. A clamping depth of 2.634 inches provides secure tool engagement. The M20 retention knob thread is ready for direct spindle mounting without additional adapters.

Key Features

• C6 modular connection shank for quick-change tooling compatibility
• 1.5-inch bore accommodates standard large-diameter end mills
• 3.5-inch projection length for extended reach in deep-pocket applications
• Through-spindle coolant delivery channels coolant directly to the cutting zone
• TIR of 0.0002 inches for precision runout control
• 2.634-inch clamping depth for secure, rigid end mill retention
• M20 retention knob thread for direct spindle mounting

Compatibility

Designed for use on CNC machining centers equipped with C6 modular connection tooling interfaces that support through-spindle coolant and M20 retention knob threads.

Installation Notes

Installation should be performed by a qualified CNC machinist or tooling technician. Power down and lock out the machine spindle before installing or removing the holder. Verify that the modular connection interface on the spindle is clean and free of chips or burrs before seating the holder. Confirm through-coolant passages are clear and that the machine coolant system is configured to deliver coolant through the spindle before operation.