Kennametal 3381161 Carbide Replaceable Tip Drill 20.5mm

Product Description

The KENNAMETAL 3381161 is a carbide replaceable tip drill from the KSEM series, designed for high-productivity hole-making in a wide range of metalworking applications. The drill accepts the KSEM2050HPLM insert, a solid carbide tip with an AlTiN PVD coating and HPL insert geometry. It runs a 20.5mm cutting diameter with a 140-degree included angle and a 2-flute helical configuration. The insert is secured by a clamp-style holding method, allowing quick tip changes without removing the drill body from the spindle. Licensed machinists and CNC operators use this drill on steel, stainless steel, cast iron, non-ferrous metals, and superalloys including titanium.

This drill is suited for production machining environments where insert-tip economy and consistent hole quality matter. The KSEM series is commonly applied in drilling operations involving inclined exits and stacked plates, where a stable 2-flute, 2-margin geometry provides reliable entry and exit performance. The HPL insert geometry supports demanding cuts in P, M, K, N, and S workpiece material classifications. The 10mm flute length and 19mm insert height make this a compact tip well suited to shallow-to-moderate depth hole cycles on CNC machining centers and lathes.

Key Features

• Solid carbide tip with AlTiN PVD coating for heat and wear resistance in ferrous and exotic alloys
• 20.5mm cutting diameter with 140-degree standard drill point angle
• 2-flute helical, 2-margin configuration for stable drilling on inclined exits and stacked plates
• Clamp-style insert holding allows rapid tip indexing without removing the drill body
• Compatible with P, M, K, N, and S ISO workpiece material classifications
• Fine grain carbide substrate under KCMS15 manufacturer grade for toughness at elevated cutting speeds

Compatibility

Designed for use with KSEM series drill bodies that accept insert seat size 3. The ISO number KSEM2050HPLM confirms fitment to KSEM holders designed for a 20.5mm cutting diameter. Verify seat size and body series before ordering.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians following the machine tool manufacturer lockout procedure before any insert change. Use the correct torque tool or clamp key specified by KENNAMETAL for the KSEM seat size 3 to avoid over-torquing the clamp screw. Inspect the insert pocket and seating surfaces for chips or debris before seating the new tip. Coolant-through capability is not present on this insert, so external coolant or mist delivery should be confirmed as adequate for the intended workpiece material and cutting parameters.