Kennametal 4149128 Solid Carbide Jobber Drill 3.10 Mm

Product Description

The KENNAMETAL 4149128 is a solid carbide jobber-length drill bit with a 3.10 mm (0.1220 inch) diameter and a 140-degree point angle. It features a multilayer TiAlN coating for extended tool life in demanding applications. The overall length is 66.00 mm (2.598 inches), with a 28.00 mm (1.102 inch) flute length and a maximum drilling depth of 23.00 mm (0.906 inch). A tapered web configuration and regular spiral flute geometry support efficient chip evacuation. This drill is intended for use by machinists and tool-room technicians working in production and precision drilling environments.

The 4149128 is suited for drilling steel, stainless steel, cast iron, aluminum, and other non-ferrous materials. It is built to DIN 6537K specification, placing it in a 5xD flute-to-diameter ratio category appropriate for moderate-depth through-hole and blind-hole applications. Coolant-through capability makes it a practical choice for high-cycle CNC machining operations where heat management is critical. It is typically found in job shops, production lines, and tool-and-die environments where tight diameter tolerance and consistent hole quality are required.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• Multilayer TiAlN coating extends tool life in steel and stainless steel applications
• 140-degree point angle reduces thrust and improves centering on entry
• Coolant-through design supports high-speed, high-cycle drilling operations
• DIN 6537K specification ensures dimensional consistency
• Tapered web and regular spiral flute promote reliable chip evacuation

Compatibility

Designed as a replacement-style solid carbide jobber drill conforming to DIN 6537K, compatible with standard straight-shank tool holders and collet chucks accepting a 6 mm (0.625 inch) shank diameter across CNC machining centers and drill presses.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the spindle fully stopped and machine power locked out. Secure the straight cylindrical shank firmly in a collet or drill chuck rated for the shank diameter before operation. Verify coolant-through connections and flow rate are properly set before initiating a cutting cycle. Do not use this drill in hand-held drill applications; it is intended for machine tool use only.