Kennametal 4151802 Solid Carbide Jobber Drill 2.50 Mm

Product Description

The KENNAMETAL 4151802 is a solid carbide jobber-length drill designed for precision hole-making in demanding industrial applications. It features a 2.50 mm diameter, a 140-degree split point, and a multilayer TiAlN coating that extends tool life by reducing heat buildup and resisting wear at the cutting edge. The straight-cylindrical shank measures 4 mm in diameter and 28 mm in length, while the overall length is 58 mm. With a right-hand spiral flute and a 5xD flute-to-diameter ratio, this drill is built for high-performance drilling in production environments. It is typically installed by machinists and tool-and-die professionals operating CNC or manual drill presses and machining centers.

This drill is suited for use in ferrous and non-ferrous materials including steel, stainless steel, cast iron, and aluminum. The 140-degree point geometry reduces thrust force at entry, making it well-suited for hard or work-hardening materials. With a maximum drilling depth of 17 mm and a flute length of 22 mm, it is appropriate for short-to-medium depth holes in tight-tolerance applications. The DIN 6537K specification ensures dimensional consistency for repeatable results in production runs.

Key Features

• Solid carbide construction provides rigidity and wear resistance in hard materials
• Multilayer TiAlN coating reduces friction and extends cutting tool life at elevated temperatures
• 140-degree point angle lowers entry thrust and improves self-centering on hard workpieces
• Right-hand regular spiral flutes promote efficient chip evacuation
• Straight-cylindrical shank compatible with standard collet chucks and drill chucks
• Conforms to DIN 6537K specification for dimensional consistency

Compatibility

Designed as a DIN 6537K-compliant solid carbide jobber drill for use in standard collet or drill chuck toolholders accepting a 4 mm straight shank, suitable for CNC machining centers and conventional drill presses.

Installation Notes

Installation is performed by machinists using a collet chuck or drill chuck rated for the 4 mm shank diameter. Ensure the spindle and toolholder are fully de-energized and locked out before changing tooling. Verify runout at the cutting edge after seating to maintain hole-diameter tolerances. Do not exceed the recommended drilling depth of 17 mm without retracting to clear chips, as this drill does not support coolant-through delivery.