Kennametal 2249689 End Mill Holder BT30 1/8 Inch

Product Description

The KENNAMETAL 2249689 is a BT30 taper shank end mill holder designed for CNC machining centers requiring precise tool retention and through-coolant capability. The holder accepts a 1/8 inch bore and delivers coolant directly through the spindle to the cutting edge, supporting higher cutting speeds and extended tool life. With an overall length of 4.266 inches and a projection of 2.36 inches, this holder positions tooling accurately for a range of milling operations. Balanced to 12,000 RPM, it is suited for high-speed machining applications where runout and vibration control are critical. A licensed machinist or CNC setup technician handles installation and tool changes.

This end mill holder is intended for use in BT30 spindle machining centers commonly found in vertical and horizontal CNC mills. The BT30 taper is standard in light-duty to mid-range production machining environments. The through-coolant design makes it appropriate for operations where flood coolant alone is insufficient, such as deep-pocket milling or hard-material cutting. The M12 drawbar thread engages the machine spindle drawbar for secure pull-stud retention during operation.

Key Features

• BT30 taper shank for direct spindle engagement in compatible machining centers
• 1/8 inch bore diameter for small-diameter end mill retention
• Through-spindle coolant delivery channels coolant to the cutting zone
• Balanced to 12,000 RPM for stable high-speed operation
• 11/16 inch nose diameter with 2.36 inch projection for reach into workpiece features
• M12 drawbar thread for secure pull-stud connection

Compatibility

Designed as an OEM-style end mill holder for CNC machining centers equipped with a BT30 taper spindle and M12 drawbar thread.

Installation Notes

Installation and tool changes must be performed by a qualified machinist or CNC toolroom technician. Power down and lock out the machining center before inserting or removing the holder from the spindle. Verify the pull stud and drawbar thread specification match the machine before installation. Confirm coolant port alignment with the spindle coolant supply before operation.