Kennametal 4150178 Drill Bit 10.20mm Solid Carbide Tialn

Product Description

The KENNAMETAL 4150178 is a screw machine length (stub) solid carbide drill bit designed for high-performance drilling in metalworking and machining applications. Built to DIN 6537K standards, this right-hand cutting bit features a 140-degree point angle and a multilayer TiAlN coating at the tip for extended tool life under demanding cutting conditions. The 10.20 mm diameter and 102.00 mm overall length make it well suited for precision holes in tight setups where a shorter drill body reduces deflection and improves rigidity. Two regular spiral flutes provide efficient chip evacuation. It is installed and operated by machinists and tool-and-die professionals on CNC machining centers, drill presses, and similar equipment.

This drill bit is intended for stub-length drilling operations in ferrous and non-ferrous metals, alloys, and similar materials where a 3xD flute-to-diameter ratio meets the depth requirement. It performs best in applications demanding tight hole-diameter tolerances, with a drill bit diameter tolerance of -0.018 to 0.000 mm. The straight cylindrical shank accommodates standard tool holders and collet chucks sized for a 12.00 mm shank diameter. Series B041A-CPG designates its family within the KENNAMETAL solid carbide stub drill lineup.

Key Features

• Solid carbide construction for rigidity and wear resistance in metal drilling
• TiAlN multilayer coating at the tip extends tool life and reduces heat buildup
• 140-degree point angle reduces thrust and improves self-centering on entry
• Stub (screw machine) length body minimizes deflection in short-reach setups
• DIN 6537K specification for consistent dimensional accuracy
• 2-flute regular spiral design promotes efficient chip clearance

Compatibility

Designed as an OEM-style replacement and standard production drill bit within the KENNAMETAL B041A-CPG series, suitable for use in standard straight-shank tool holders and collet chucks accepting a 12.00 mm shank diameter.

Installation Notes

Installation and operation should be performed by qualified machinists following established shop safety procedures. Ensure the machine spindle is fully stopped and locked out before changing tooling. Verify that the tool holder or collet chuck is clean and within proper runout tolerance before securing the shank. Do not exceed the maximum drilling depth of 40.00 mm for this stub-length configuration without re-evaluating setup rigidity.