Kennametal 4169293 Extra Length Drill Bit 11mm Carbide

Product Description

The KENNAMETAL 4169293 is a solid carbide extra length drill bit engineered for demanding precision drilling applications. It measures 11 mm (0.4331 inches) in diameter with an overall length of 218 mm (8.583 inches) and a flute length of 167 mm (6.575 inches). The bit features a multilayer TiAlN coating that extends tool life under high heat and abrasive cutting conditions. A 135-degree standard point angle promotes accurate entry and reduces walking on entry. The straight-cylindrical shank measures 12 mm (0.4724 inches) in diameter and 45 mm (1.772 inches) in length, making it compatible with standard chuck and collet tooling systems. This bit is intended for use by machinists and CNC operators working in metal cutting environments.

The 4169293 belongs to the KENNAMETAL B269-HP series and is designed for deep-hole drilling at a flute-to-diameter ratio of 12xD, with a maximum drilling depth of 142 mm (5.591 inches). It is suited for production machining in ferrous and non-ferrous materials where extended reach and tight diameter tolerances are required. The two-flute spiral design with tapered web configuration promotes chip evacuation in deep bore applications. Coolant-through capability makes it appropriate for high-feed-rate operations on CNC machining centers and drill presses equipped with internal coolant delivery.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard material drilling
• Multilayer TiAlN coating improves thermal resistance and extends cutting life
• 135-degree standard point angle for accurate self-centering entry
• Coolant-through design supports internal coolant delivery for deep-hole applications
• 12xD flute-to-diameter ratio allows drilling to 142 mm (5.591 inches) depth
• Diameter tolerance of +0.007 to +0.025 mm for consistent bore quality

Compatibility

Designed as a KENNAMETAL B269-HP series extra length drill bit for use in standard straight-shank chucks and collet holders accommodating a 12 mm shank diameter on CNC machining centers, drill presses, and similar machine tool equipment.

Installation Notes

This drill bit is installed and serviced by machinists or CNC tooling technicians. Ensure the machine spindle is fully stopped and locked out before changing tooling. Secure the straight-cylindrical shank firmly in a properly sized collet or chuck to the tool holder manufacturer's specified clamping procedure. When using coolant-through capability, verify that the machine coolant system pressure and flow rate are compatible with the toolholder and spindle configuration before operation.