Kennametal 1026117 End Mill Holder CAT50 5/8 Inch

Product Description

The KENNAMETAL 1026117 is a CAT50 taper shank end mill holder designed for use in CNC machining centers requiring precise tool retention and high-speed performance. The holder accepts a 5/8 inch bore and features through-coolant capability, delivering cutting fluid directly to the tool tip for improved chip evacuation and thermal management. With a projection of 7.75 inches and a nose diameter of 1.625 inches, this holder suits deep-reach milling applications where rigidity and balance are critical. Rated to 12,000 RPM, it is built for production environments where consistent tool runout and secure clamping are non-negotiable requirements.

This end mill holder is suited for vertical and horizontal CNC machining centers equipped with CAT50 spindle interfaces. It is typically installed in shops running ferrous and non-ferrous milling operations where through-spindle coolant is available and preferred. The 1-8 drawbar thread size is standard for CAT50 tooling systems. Machinists and toolroom technicians working in aerospace, automotive, die and mold, and general metalworking applications will find this holder appropriate for demanding production and prototype work.

Key Features

• CAT50 taper shank for compatibility with standard CAT50 spindle interfaces
• 5/8 inch bore diameter for direct end mill mounting
• Through-coolant design with through-spindle coolant delivery to the cutting zone
• 7.75 inch projection for extended reach milling setups
• Balanced to 12,000 RPM for stable high-speed operation
• 1-8 drawbar thread size matching standard CAT50 retention knob specifications

Compatibility

Designed for use with CNC machining centers equipped with a CAT50 spindle interface and through-spindle coolant capability. Compatible with end mills using a 5/8 inch straight shank and a standard 1-8 drawbar retention thread.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Power down and lock out the machining center spindle before mounting or removing the holder. Use a calibrated torque wrench and the appropriate spanner wrench for the retention knob — do not exceed the drawbar torque specification listed in the machine tool manual. Verify tool runout with a dial indicator after installation before resuming cutting operations.