Kennametal 1152604 Indexable Profiling Toolholder Internal

Product Description

The KENNAMETAL 1152604 is an internal indexable profiling toolholder designed for precision boring and profiling operations on CNC lathes and turning centers. Built to the Top Notch Profiling Boring Bar series, this right-hand holder features a 3/4 inch shank diameter, a 10 inch overall length, and a minimum hole diameter of 0.98 inches. The carbide body and clamp-style insert holding method provide rigid support during interrupted cuts and continuous profiling passes. It accepts NP.. 51L series inserts with a 5/8 inch inscribed circle and delivers a neutral rake angle with a 5-degree lead angle for controlled chip flow and consistent surface finish in internal profiles.

This toolholder is suited for internal turning and profiling applications in production and job-shop environments. The 10 inch OAL allows reach into deeper bores while the 0.98 inch minimum hole diameter keeps it practical for medium-bore work. Coolant-through capability, with a coolant hole diameter of 0.281 inches, supports high-speed machining of steels, stainless alloys, and cast materials where heat and chip evacuation are critical concerns. Installation and tool changes are handled by machinists and CNC operators in machine shop settings.

Key Features

• Internal right-hand configuration for bore profiling and turning on CNC lathes
• Carbide toolholder body for rigidity and vibration damping in deep-reach applications
• Coolant-through design with 0.281 inch coolant hole diameter for effective chip and heat management
• Clamp-style insert retention accepts NP.. 51L inserts with 5/8 inch inscribed circle
• Neutral rake, 5-degree lead angle geometry for controlled cutting forces and consistent finish
• E-NKLC toolholder style with center-to-cutting-edge measurement of 0.562 inches

Compatibility

Compatible with NP.. 51L series inserts. Complete insert compatibility as specified by the manufacturer is NP.. 51L. This toolholder is part of the Kennametal Top Notch Profiling Boring Bar series and is identified by manufacturer style designation E12NKLCR05.

Installation Notes

Installation is performed by qualified machinists following the machine tool manufacturer guidelines for toolholder torque and setup procedures. Power down and lock out the machine spindle before mounting or changing the toolholder or insert. Verify shank diameter and bore fit before final clamping to avoid runout. Coolant-through connections should be confirmed leak-free before resuming cutting operations.