Kennametal 1191439 Solid Carbide Jobber Drill 8.50 Mm

Product Description

The KENNAMETAL 1191439 is a solid carbide jobber-length drill designed for precision hole-making in demanding industrial and machining applications. Built to DIN 6537L specification, it features a 130-degree point angle with web thinning for improved centering and reduced thrust on entry. The drill measures 8.50 mm in diameter with an overall length of 103.00 mm (4.0551 inches) and a three-flute regular spiral geometry that promotes efficient chip evacuation. Manufactured from K10 grade carbide in a bright, uncoated finish, this drill is suited for shops running production work where tight tolerances and tool consistency are required.

This drill is engineered for use in ferrous and non-ferrous materials including cast iron, aluminum, and high-temperature alloys. The straight cylindrical shank with a 10 mm shank diameter seats directly into standard drill chucks and collet holders. Maximum drilling depth reaches 49.00 mm (1.9291 inches), making it appropriate for through-hole and blind-hole operations on CNC machining centers, drill presses, and manual milling machines. It is typically installed and used by machinists and tool-and-die professionals in job shops, production facilities, and aerospace or automotive component manufacturing environments.

Key Features

• Solid carbide K10 grade construction for hardness and wear resistance in abrasive materials
• 130-degree point angle with web-thinned, tapered web for reduced entry thrust and accurate starting
• Three-flute regular spiral geometry improves chip flow and allows higher feed rates compared to two-flute designs
• DIN 6537L specification ensures dimensional consistency and interchangeability
• Bright uncoated finish suited for aluminum, non-ferrous metals, and cast iron where coating adhesion is not a priority
• Straight cylindrical shank compatible with standard collets and drill chucks without adapters

Compatibility

Designed for use in cast iron, aluminum and non-ferrous materials, and high-temperature alloys as specified by the manufacturer. Fits standard straight-shank drill chucks and collet systems accepting a 10 mm shank diameter.

Installation Notes

This drill is intended for use by machinists operating CNC machining centers, drill presses, or milling machines. Ensure the machine spindle and workholding are fully stopped and de-energized before inserting or removing the drill from the chuck or collet. Verify shank runout is within tolerance after seating to prevent premature tool wear or breakage. Carbide tooling is brittle and should not be subjected to side loading or interrupted cuts beyond its rated capacity without confirming suitability with the manufacturer.