Kennametal 1258013 End Mill Holder BT30 3/8 Inch Through Coolant

Product Description

The KENNAMETAL 1258013 is a BT30 taper shank end mill holder designed for CNC machining centers that use the BT30 spindle interface. It accepts a 3/8 inch tool shank and features through-coolant delivery, channeling coolant directly through the spindle and holder to the cutting tool. The holder has a nose diameter of 1 inch and a projection of 2.36 inches, making it suitable for applications that require moderate tool stick-out with good rigidity. It is balanced to 12000 RPM, supporting higher-speed finishing and semi-finishing operations. Installation and tool changes are handled by CNC machinists and toolroom technicians.

This holder is used in vertical and horizontal machining centers equipped with BT30 spindle tapers, common in light-duty and mid-size CNC milling machines. The through-coolant feature makes it well suited for drilling, slotting, and peripheral milling operations where heat management and chip evacuation at the cutting zone are priorities. The M12 drawbar thread is standard for BT30 tooling systems. Typical applications include precision part production in job shops, tool rooms, and production machining environments.

Key Features

• BT30 taper shank for compatibility with BT30 spindle interfaces
• 3/8 inch bore accepts standard end mill shanks of that diameter
• Through-coolant design channels coolant directly to the cutting zone
• Balanced to 12000 RPM for higher-speed milling operations
• 2.36 inch projection provides moderate reach with maintained rigidity
• M12 drawbar thread matches BT30 tooling system standards

Compatibility

Designed for use in CNC machining centers with BT30 taper spindles that support through-spindle coolant delivery and an M12 drawbar thread.

Installation Notes

Installation should be performed by a qualified CNC machinist or toolroom technician. The spindle must be fully stopped and the machine placed in an appropriate safe state before mounting or removing toolholders. Use a torque wrench and the machine manufacturer's specified drawbar torque procedure when seating the holder in the spindle. Verify tool runout with a dial indicator after clamping before returning the machine to production.