Kennametal 4148854 Drill Bit 2.80mm Solid Carbide 140deg

Product Description

The KENNAMETAL 4148854 is a screw machine length (stub) drill bit engineered for precise, short-hole drilling in demanding production environments. Built from solid carbide and finished with a multilayer TiAlN coating at the tip, this bit handles hard and abrasive workpiece materials where high-speed steel tooling falls short. The 140-degree split-point geometry reduces thrust force and improves centering without a pilot hole. At 58.00 mm overall length with a 17.00 mm flute length and a 4.00 mm straight cylindrical shank, the compact stub profile delivers added rigidity for tight-tolerance drilling applications. Coolant-through capability supports chip evacuation and tool life in deeper passes up to 12.00 mm.

This bit is sized at 2.80 mm (0.1102 inch) diameter and is designed for use in CNC machining centers, drill presses, and screw machine setups requiring consistent hole quality in metals and hard materials. The stub length format reduces deflection in short-reach drilling scenarios common in production machining, mold work, and precision component manufacturing. It follows DIN 6537K specification and belongs to KENNAMETAL Series B051A-CPG.

Key Features

• Solid carbide construction for superior wear resistance in hard and abrasive materials
• Multilayer TiAlN (tip) coating reduces heat buildup and extends tool life
• 140-degree point angle improves self-centering and reduces entry burr
• Coolant-through design aids chip evacuation in deep drilling passes
• Stub length profile increases rigidity and minimizes deflection
• Right-hand cutting, regular spiral flute, tapered web configuration

Compatibility

Designed as an OEM-compatible replacement or standard production drill bit for CNC and screw machine setups requiring a 2.80 mm diameter, DIN 6537K stub-length drill in solid carbide. Fits any tool holder or collet chuck accepting a 4.00 mm straight cylindrical shank.

Installation Notes

Installation and setup should be performed by a qualified machinist or tooling technician. Ensure the tool holder or collet is clean and free of debris before seating the shank to maintain runout tolerances. Confirm coolant-through lines are properly connected and pressurized before running the bit at speed. Do not exceed the recommended maximum drilling depth of 12.00 mm per pass without retracting to clear chips.