Kennametal 4149602 Taper Length Drill Bit No. 27 Solid Carbide

Product Description

The KENNAMETAL 4149602 is a taper length drill bit engineered for precision hole-making in ferrous and hard materials. It is built from solid carbide in material grade KC7325 and finished with a multilayer TiAlN coating that extends tool life under high heat and abrasion. The bit cuts a 0.1440-inch diameter hole using a 140-degree standard point, which provides aggressive self-centering and reduces thrust load. With a flute-length-to-diameter ratio of 8xD, it is designed for deeper drilling applications where chip evacuation matters. Licensed machinists, tool-and-die makers, and precision metalworking shops are the primary users of this bit.

This drill bit is suited for production and job-shop environments that require consistent hole tolerance and extended tool life. The coolant-through design delivers cutting fluid directly to the tip, supporting higher feed rates and surface quality in difficult-to-machine alloys, stainless steels, and hardened materials. The straight cylindrical shank fits standard collets and drill chucks. It conforms to DIN 6537K and carries a tapered web configuration for added stiffness along the flute length.

Key Features

• Solid carbide KC7325 substrate with multilayer TiAlN coating for heat and wear resistance
• 140-degree standard point angle for self-centering and reduced thrust
• Coolant-through design supports high feed rates in hard or abrasive materials
• 8xD flute-length-to-diameter ratio for controlled chip evacuation in deeper holes
• Right-hand spiral flute with tapered web construction for torsional rigidity
• Conforms to DIN 6537K specification for consistent dimensional accuracy

Compatibility

Designed as a taper length OEM-style replacement or production drill in any setup accepting a 0.2362-inch straight cylindrical shank, compatible with standard collet chucks and drill fixtures used in precision machining operations.

Installation Notes

Installation is performed by licensed machinists or tooling technicians. Ensure the machine spindle is fully stopped and locked before inserting or removing the bit from the collet or chuck. Verify coolant-through lines are clear and pressure is set per machine specifications before engaging the cut. Do not exceed the rated maximum drilling depth of 1.2992 inches without retracting to clear chips.