Kennametal 2878591 Drill Bit 3.30mm Carbide Tialn

Product Description

The KENNAMETAL 2878591 is a screw machine length drill bit engineered for precision hole-making in demanding machining applications. Built from solid carbide and coated with a multilayer TiAlN finish, this bit delivers high wear resistance and heat tolerance in production environments. It measures 3.30 mm in diameter with a 140-degree split point, a 2.4409-inch overall length, and a 6.00 mm straight cylindrical shank. The TiAlN coating reduces friction and extends tool life in ferrous and non-ferrous materials. Coolant-through capability supports higher feed rates and chip evacuation in deep-hole drilling operations. Licensed machinists and CNC operators in metalworking and precision manufacturing shops are the primary users.

This drill bit is suited for short-hole drilling on CNC machining centers, screw machines, and drill presses where tight tolerances and consistent hole quality are required. Its screw machine length format provides added rigidity compared to jobber-length bits, making it well-suited for high-volume production runs in steel, cast iron, aluminum, and similar materials. The Series B976A designation and DIN 6537K specification confirm compliance with recognized tooling standards, supporting consistent performance across repeat applications.

Key Features

• Solid carbide construction for maximum rigidity and wear resistance in hard materials
• Multilayer TiAlN coating improves heat resistance and extends tool life in high-speed cutting
• 140-degree point angle reduces thrust and improves self-centering on entry
• Coolant-through design supports chip evacuation and heat management in deep holes
• Straight cylindrical shank for direct chuck or collet mounting without adapters
• Conforms to DIN 6537K specification for dimensional consistency

Compatibility

Designed as an OEM-style replacement or direct-fit tooling solution for CNC machining centers, screw machines, and drill presses accepting a 6.00 mm straight cylindrical shank in Series B976A configuration.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Secure the shank fully in a compatible chuck or collet to the manufacturer-recommended engagement depth before operation. Ensure the machine spindle is fully stopped and locked out before changing tooling. Verify coolant-through lines are clear and active prior to engaging the drill in deep-hole applications to prevent heat buildup and premature tool failure.