Kennametal 2658414 Taper Length Drill Bit 5/8 in Carbide

Product Description

The KENNAMETAL 2658414 is a taper length drill bit engineered for high-performance drilling in demanding industrial applications. Built from solid carbide and finished with a TiAlN coating, this bit delivers extended tool life and heat resistance at elevated cutting speeds. The 132-degree point angle promotes accurate entry and reduces walking on entry. At 6.7323 inches overall length with a 4.7638-inch flute length, the 2658414 suits applications requiring reach beyond what a jobber-length bit provides. The straight cylindrical shank measures 0.6299 inches in diameter and seats directly in standard chucks or collets. Coolant-through capability allows cutting fluid delivery directly to the cutting zone, supporting chip evacuation and thermal control in deep-hole operations.

This drill bit is designed for use on CNC machining centers, drill presses, and manual mills in industrial, tool room, and manufacturing environments. Rated for cast iron and steel applications, it handles the abrasive and work-hardening conditions common in production machining. The web-thinned, tapered web construction reduces thrust requirements and keeps the cutting geometry efficient at full depth. Maximum drilling depth is rated at 3.9760 inches. A licensed machinist or tool-and-die professional is the typical end user for a bit at this specification level.

Key Features

• Solid carbide construction for rigidity and wear resistance in steel and cast iron
• TiAlN coating provides thermal barrier and extended edge life at high cutting speeds
• 132-degree point angle with standard point type for clean, accurate entry
• Coolant-through design delivers fluid directly to the cutting edge for chip control
• Web-thinned tapered web reduces axial thrust and improves chip flow
• Straight cylindrical shank compatible with standard chucks and collet systems
• Conforms to DIN 6537K specification for dimensional consistency

Compatibility

Designed for use in cast iron and steel applications as specified for KENNAMETAL Series B978 taper length drills. Suitable for CNC and manual machine tool setups accepting a straight cylindrical shank.

Installation Notes

Installation is performed by qualified machinists following standard toolholding procedures for straight-shank tooling. Ensure the machine spindle and chuck or collet are clean and undamaged before seating the shank. Verify coolant-through connections are properly configured before engaging the spindle when using through-spindle coolant delivery. Do not exceed the rated maximum drilling depth of 3.9760 inches per the tool specification.