Kennametal 3640722 Solid Carbide Drill Bit 1/2 Inch Tialn

Product Description

The KENNAMETAL 3640722 is a screw machine length solid carbide drill bit designed for high-performance hole-making in demanding materials. Built to DIN 6537K specification, it features a 140-degree point angle with web thinning for reduced thrust and improved centering on tough substrates. The TiAlN coating provides thermal resistance and extended tool life under high cutting speeds. At 4.2126 inches overall length with a 0.5000 inch cutting diameter, this is a compact, rigid drill suited for close-tolerance work. Coolant-through capability supports chip evacuation and heat management in deep-hole applications. Licensed machinists and tool-room professionals working in aerospace, medical, and industrial manufacturing are the primary installers of this tooling.

This drill bit is engineered for cutting high temperature alloys and stainless steel, materials that generate significant heat and work-harden rapidly. The screw machine length format provides added rigidity over jobber-length bits, reducing deflection in short-reach setups on CNC machining centers, turret lathes, and screw machines. The 3xD flute-to-diameter ratio and regular spiral flute geometry support chip flow in these difficult-to-machine materials. The straight cylindrical shank at 0.5469 inches fits standard drill chucks and collet holders commonly found in production environments.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and abrasive materials
• TiAlN coating for high thermal resistance and extended tool life at elevated cutting speeds
• 140-degree point angle with web thinning reduces entry thrust and improves point stability
• Coolant-through design supports chip evacuation and heat control in deep-hole drilling
• DIN 6537K specification ensures dimensional consistency for precision fitment
• Screw machine length format maximizes stiffness and minimizes deflection in short-reach setups

Compatibility

Designed for drilling high temperature alloys and stainless steel. Fits standard drill chucks and collet holders accepting a 0.5469 inch straight cylindrical shank. Part of the KENNAMETAL B291-YPL series.

Installation Notes

This tooling is installed by qualified machinists and CNC setup technicians. Ensure the machine spindle and tool holder are fully de-energized and locked out before changing tooling. Verify shank seating and runout with a dial indicator before production use. Follow the machine tool manufacturer and cutting tool manufacturer recommendations for speed, feed, and coolant pressure when drilling high temperature alloys or stainless steel.