Sandvik Coromant 5721447 CAT40 End Mill Holder 1 Inch

Product Description

The SANDVIK COROMANT 5721447 is a CAT40 taper shank end mill holder designed for precision milling operations on CNC machining centers. It accepts a 1 inch tool bore and delivers a 1 inch projection, giving machinists consistent reach and rigidity for end mill applications. Through-coolant capability routes fluid directly to the cutting zone, supporting chip evacuation and tool life in demanding cuts. The holder runs a total indicator reading (TIR) of 0.002 inches and is balanced to 8000 RPM, making it suitable for both roughing and finishing passes where runout control matters.

This end mill holder is intended for use in production and job-shop environments running CAT40 spindle tooling. It fits vertical and horizontal CNC machining centers equipped with CAT40 spindle interfaces. Typical applications include peripheral milling, slotting, and profiling operations where coolant delivery at the cutting edge improves process reliability. Installation is performed by qualified machine operators or tooling setup personnel as part of standard tool change and presetting procedures.

Key Features

• CAT40 taper shank for direct spindle mounting on CAT40 machining centers
• 1 inch bore diameter with 1 inch projection for consistent tool positioning
• Through-coolant design supports through-spindle, through-bore, and DIN flange coolant delivery
• TIR of 0.002 inches ensures low runout for dimensional accuracy
• Balanced to 8000 RPM for stable performance across a range of cutting speeds
• Clamping depth of 1.75 inches provides secure tool retention under cutting loads

Compatibility

Designed as a direct-mount toolholder for CNC machining centers with a CAT40 spindle interface and through-spindle coolant capability.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician following the machine tool manufacturer's toolholder torque and drawbar procedures. Power down and lock out the machining center spindle before mounting or removing the holder. Use a calibrated tool presetter to confirm projection and runout before returning the spindle to operation. Inspect the taper shank and spindle bore for nicks or contamination prior to seating the holder.