Kennametal 6781490 Carbide Jobber Drill 6mm 140 Deg

Product Description

The KENNAMETAL 6781490 is a solid carbide jobber-length drill bit designed for precision hole-making in demanding metal-cutting applications. It measures 6.00 mm (0.2362 inches) in diameter with an overall length of 82.00 mm (3.2283 inches) and a flute length of 44.00 mm (1.7323 inches). The 140-degree split point reduces walking and lowers thrust force at entry. The multi-layer AlTiN proprietary coating delivers high heat resistance and extended tool life in hard and abrasive workpiece materials. This drill is used by machinists and tool-and-die professionals running CNC machining centers, drill presses, and manual mills.

This drill bit is suited for production drilling in ferrous metals, cast iron, stainless steel, and high-temperature alloys where heat buildup is a primary concern. The AlTiN coating performs well in dry or minimum-quantity lubrication (MQL) cutting conditions. The straight cylindrical shank provides consistent runout in standard drill chucks and collet holders. With a 5xD flute-to-diameter ratio, this jobber drill handles moderate-depth holes typical of general machining work without requiring a specialty deep-hole drill.

Key Features

• Solid carbide construction — grade KCP15B — for rigidity and wear resistance in hard materials
• Multi-layer AlTiN coating provides thermal barrier and reduces built-up edge in ferrous cutting
• 140-degree point angle reduces thrust and self-centers on entry without a pilot hole in most applications
• Right-hand cutting, regular spiral flute for efficient chip evacuation
• Straight cylindrical shank compatible with standard drill chucks and ER collets
• Maximum drilling depth of 35.00 mm supports typical through-hole and blind-hole production work

Compatibility

Designed as an OEM-grade solid carbide jobber drill for use in CNC machining centers, drill presses, and milling machines equipped with standard drill chucks or collet systems accepting a 6.00 mm straight shank.

Installation Notes

Installation of this drill bit should be performed by a qualified machinist or tooling technician. Power down and lock out the machine spindle before loading or removing the drill. Seat the straight shank fully and evenly in the collet or chuck to minimize runout before tightening. Follow the machine manufacturer and cutting tool manufacturer feed and speed recommendations for the specific workpiece material — do not exceed the maximum drilling depth of 35.00 mm for this tool without consulting application guidelines.