Kennametal 2222651 Screw Machine Drill Bit 8.60mm Carbide

Product Description

The KENNAMETAL 2222651 is a screw machine length (stub) drill bit engineered for high-performance drilling in demanding industrial applications. Built from solid carbide and coated with multilayer TiAlN, this 8.60 mm diameter bit handles cast iron and steel with consistent accuracy. The 140-degree split point with web thinning reduces thrust force and improves centering on entry. With an overall length of 89.00 mm and a 47.00 mm flute length, it fits standard screw machine setups and CNC drilling operations where shorter flute-to-shank ratios improve rigidity and reduce runout. Coolant-through capability supports high-feed, deep-hole cycles without thermal degradation of the cutting edge.

This bit is sized for production drilling environments including CNC machining centers, turret lathes, and gang drilling fixtures. The 10.00 mm straight cylindrical shank seats securely in standard drill chucks and collet systems. Primary workpiece materials are cast iron and steel, making it well suited to automotive component machining, die and mold work, and general metalworking production lines where consistent hole tolerance and long tool life are priorities. The DIN 6537K specification ensures dimensional conformity for shops running metric tooling standards.

Key Features

• Solid carbide construction for superior hardness and wear resistance in ferrous materials
• Multilayer TiAlN coating extends tool life at elevated cutting temperatures
• 140-degree point angle with web thinning reduces entry thrust and improves hole location accuracy
• Coolant-through design supports high-feed drilling and chip evacuation in deep holes up to 35.00 mm
• Parallel web configuration maintains consistent core strength along the full flute length
• DIN 6537K specification ensures metric dimensional compliance for production tooling programs

Compatibility

Designed as a Series B976 screw machine length drill bit conforming to DIN 6537K, compatible with standard straight-shank drill chucks and collet holders accepting a 10.00 mm shank diameter. Optimized for drilling cast iron and steel workpiece materials.

Installation Notes

This tool is installed by machinists and CNC setup technicians. Before mounting, confirm the spindle or chuck bore is clean and free of chips that could cause runout. Secure the straight cylindrical shank fully into the collet or chuck to the recommended grip depth to prevent pullout under cutting load. Do not exceed the maximum drilling depth of 35.00 mm per pass without retracting to clear chips, particularly in blind-hole applications.