Kennametal 6781875 Solid Carbide Jobber Drill 8.73mm

Product Description

The KENNAMETAL 6781875 is a solid carbide jobber-length drill bit designed for precision hole-making in ferrous and hard materials. It features a 140-degree split point, two-flute right-hand spiral geometry, and a multi-layer AlTiN and titanium nitride coating applied over the KCP15B carbide grade substrate. The 8.73 mm diameter cutting edge is carried on a 10 mm straight cylindrical shank. The bit measures 4.055 inches in overall length with a flute length of 2.402 inches. Coolant-through capability supports chip evacuation and tool life in deep-hole applications. Installation and use are appropriate for CNC machining centers and drill presses.

This drill is suited for production drilling operations in manufacturing, tool rooms, and maintenance environments. The 5xD flute-to-diameter ratio and 49 mm maximum drilling depth make it a practical choice for moderate-depth bores in steel, cast iron, stainless, and similar materials. A maximum drilling depth of 1.929 inches is supported. The straight shank accepts standard drill chucks and collet holders. This bit is typically installed by machinists and tool-and-die professionals working to tight positional tolerances.

Key Features

• Solid carbide construction in KCP15B grade for hardness and wear resistance
• Multi-layer AlTiN and TiN proprietary coating for heat and oxidation resistance
• 140-degree point angle for self-centering entry and reduced thrust force
• Coolant-through design supports chip flushing in deep or blind bores
• 5xD flute-to-diameter ratio balances chip capacity with core strength
• Right-hand cutting, two-flute spiral geometry for standard CNC and manual drill applications

Compatibility

Designed as an OEM-specification solid carbide jobber drill for use in standard drill chucks, collet holders, and hydraulic tool holders accepting a 10 mm straight shank.

Installation Notes

This drill bit should be installed by qualified machinists following established tooling setup procedures. Confirm the spindle and tool holder are fully de-energized and secured before changing tooling. Verify runout and tool projection before initiating a cut. Consult the machine manufacturer and applicable shop safety standards for recommended feeds, speeds, and coolant delivery pressure for carbide tooling.