Kennametal 3381156 Carbide Replaceable Tip Drill Ksem

Product Description

The KENNAMETAL 3381156 is a solid carbide replaceable tip drill in the KSEM series, designed for precision hole-making in demanding industrial and metalworking applications. The drill tip carries the ISO designation KSEM0781HPL and is manufactured to a fine grain carbide grade (KCMS15) with a PVD-applied AlTiN coating for heat resistance and extended tool life. The cutting diameter is 25/32 inch (0.7810 inches / 19.84 mm), and the drill features a 140-degree included point angle with a standard point type. Two helical flutes provide chip evacuation, and the tip is secured by a clamp-style holding method. Licensed HVAC, plumbing, or industrial maintenance technicians working in precision environments will find this tip suitable for high-repeatability drilling cycles.

The KSEM0781HPL tip is suited for drilling operations in steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium (ISO material groups P, M, K, N, and S). Typical applications include through-hole drilling, inclined-exit drilling, and stacked-plate drilling. The helical, regular-spiral flute geometry with a 2-flute, 2-margin configuration supports consistent chip flow and hole quality across these workpiece materials. The flute length is 10.00 mm and the functional length is 0.3905 inches.

Key Features

• Solid carbide KSEM replaceable tip — ISO designation KSEM0781HPL, insert seat size 2
• AlTiN coating applied via PVD process for elevated-temperature wear resistance
• Fine grain carbide substrate, manufacturer grade KCMS15, for toughness in interrupted cuts
• 140-degree included drill point angle with standard point type
• 2-flute, 2-margin helical geometry supports inclined-exit and stacked-plate drilling
• Clamp-style insert holding method for secure tip retention under high feed rates

Compatibility

Designed as a replaceable tip insert for KSEM series drill bodies accepting insert seat size 2. Compatible workpiece materials include steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium as stated in the product specifications.

Installation Notes

Installation of KSEM replaceable tips is performed by qualified machinists or tooling technicians using the appropriate Kennametal clamp-torque tool per the tool body manufacturer guidelines. Ensure the drill body spindle is fully stopped and the machine is locked out before seating or removing the tip. Inspect the insert seat for chips, debris, or wear before each tip change. Do not exceed the recommended speed and feed parameters for the specific workpiece material and drill body in use.