Kennametal 4149490 Taper Length Drill Bit 3mm Carbide

Product Description

The KENNAMETAL 4149490 is a solid carbide taper length drill bit in the B053A-CPG series, engineered for precision drilling in ferrous and hardened materials. The bit features a multilayer TiAlN (titanium aluminum nitride) coating that extends tool life under high-heat cutting conditions. With a 140-degree point angle and right-hand spiral flute geometry, it produces clean entry and efficient chip evacuation. A coolant-through design channels cutting fluid directly to the tip, supporting deep-hole drilling performance. Qualified machinists and tooling professionals working in CNC machining centers or drill press applications are the primary users of this drill.

This taper length drill bit is suited for precision machining operations where hole diameter consistency and surface finish are critical. The 3 mm diameter (0.1181 inches) and 8xD flute-to-diameter ratio make it appropriate for applications requiring moderate hole depths in tight-tolerance environments. It conforms to DIN 6537K specification, making it a recognized standard format for industrial tooling setups. The straight cylindrical shank fits standard collet and chuck systems used in CNC and manual drilling equipment.

Key Features

• Solid carbide construction in material grade KC7325 for rigidity and wear resistance
• Multilayer TiAlN coating for extended tool life at elevated cutting temperatures
• 140-degree standard point angle for accurate positioning and reduced thrust
• Coolant-through design supports deep-hole drilling and chip flushing
• Right-hand cut, regular spiral flute for efficient chip evacuation
• Conforms to DIN 6537K specification for dimensional consistency

Compatibility

Designed for use in standard collet chucks and drill chucks accepting a 6 mm straight cylindrical shank, compatible with CNC machining centers and manual drill presses configured for small-diameter solid carbide tooling.

Installation Notes

Installation and tool changes should be performed by qualified machinists with the machine in a fully stopped and locked-out state. Ensure the collet or chuck bore is clean and free of debris before seating the straight shank. Solid carbide tooling is brittle - avoid side loading, interrupted cuts, or excessive runout that can cause chipping or fracture. Confirm coolant-through passages in the spindle are clear and delivering adequate flow before beginning deep-hole drilling cycles.