Kennametal 3381128 Carbide Replaceable Tip Drill Ksem

Product Description

The KENNAMETAL 3381128 is a carbide replaceable tip drill insert in the KSEM series, designed for precision hole-making in demanding industrial and metalworking applications. The tip carries the ISO designation KSEM0641HPL and is manufactured in a fine-grain solid carbide substrate with an AlTiN (aluminum titanium nitride) PVD coating. The cutting diameter is 41/64 inch (0.6405 inch / 16.27mm), and the drill point angle is 140 degrees. The HPL insert geometry combined with the KCMS15 grade makes this tip suitable for high-productivity drilling where tool life and edge stability are critical. Licensed tooling professionals and CNC machinists are the primary installers of this insert style.

This replaceable tip is intended for use in compatible KSEM series drill bodies within CNC machining centers, lathes with live tooling, or dedicated drilling machines. It is suited for drilling through steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium (ISO material groups P, M, K, N, and S). Supported applications include standard through-hole drilling, inclined exit drilling, and stacked plate drilling, making it a versatile option across job shop and production environments.

Key Features

• Solid carbide fine-grain substrate with AlTiN PVD coating for extended tool life in ferrous and exotic materials
• 140-degree drill point angle for stable entry and reduced thrust force
• HPL insert geometry with 2-flute, 2-margin helical flute design for chip control and hole quality
• Clamp-style insert holding method for secure seating in KSEM series drill bodies
• Compatible with ISO material groups P, M, K, N, and S — covers steel through titanium and superalloys
• Supports inclined exit and stacked plate drilling applications

Compatibility

Designed for use with compatible KSEM series replaceable tip drill bodies that accept insert seat size 1. Verify body compatibility using the KSEM series drill body specifications before installation.

Installation Notes

Installation and replacement of replaceable tip drills should be performed by qualified machinists or tooling technicians familiar with indexable tooling systems. Power down and lock out the spindle before removing or seating the insert. Use the correct torque wrench and clamp screw as specified by the drill body manufacturer — do not overtighten or use improvised tools that can damage the insert seat. Confirm proper seating and runout before resuming cutting operations.