Kennametal 1026284 CAT50 End Mill Holder 1.5in Through Coolant

Product Description

The KENNAMETAL 1026284 is a CAT50 taper shank end mill holder designed for secure tool clamping on CNC machining centers. It accepts a 1.5-inch hole diameter and delivers a 4-inch projection from the spindle face, with an 8-inch overall length and a 2.75-inch nose diameter. The holder features through-spindle coolant delivery, directing fluid directly to the cutting zone for improved chip evacuation and tool life. Balanced to 12,000 RPM, it suits high-speed milling operations where runout control and thermal management are priorities. Installation and removal follow standard CAT50 drawbar procedures using a 1-8 drawbar thread.

This end mill holder is intended for use on CNC vertical and horizontal machining centers equipped with CAT50 spindle interfaces. The 4-inch projection makes it suitable for applications requiring reach past fixtures or into deeper workpiece features. Through-spindle coolant compatibility means the holder works with machines that supply coolant through the spindle, eliminating the need for external flood nozzles at the cutting edge. It is a standard choice for shops running ferrous and non-ferrous milling operations where tool stability and coolant efficiency matter.

Key Features

• CAT50 taper shank for direct spindle interface on compatible machining centers
• 1.5-inch hole diameter accommodates large-shank end mills
• 4-inch projection for reach in deeper or fixtured setups
• Through-spindle coolant delivery routes fluid directly to the cutting zone
• Balanced to 12,000 RPM for stable high-speed milling
• 1-8 drawbar thread matches standard CAT50 retention knob specifications

Compatibility

Designed for use with CAT50 spindle-interface machining centers that support through-spindle coolant and a 1-8 drawbar thread connection.

Installation Notes

Installation is performed by a machinist or toolroom technician using a standard CAT50 retention knob and drawbar tool. Power down and lock out the machine spindle before loading or unloading the holder. Verify the spindle taper and holder taper are clean and free of chips or contamination before seating. Do not exceed the balanced RPM rating of 12,000 RPM in operation.