Guhring 9006220080300 Cobalt Jobber Drill Letter O

Product Description

The GUHRING 9006220080300 is a cobalt jobber-length drill bit sized to Letter O (0.3161 inches) with a 130-degree split point and parabolic flute geometry. Built to DIN 338 standards, this high-performance drill is designed for productive hole-making in non-ferrous metals, aluminum, and a range of engineering materials. The bright, uncoated finish makes it suitable for applications where coating adhesion or coolant compatibility is a concern. It carries a right-hand cutting direction and a straight-cylindrical shank for direct chuck mounting. Machinists, tool-and-die technicians, and general metal fabricators reach for this drill when working through tougher alloys where standard HSS tooling falls short.

This drill is suited for production and maintenance machining environments where aluminum, plastics, and cast non-ferrous workpieces are common. The parabolic flute design improves chip evacuation over standard flute geometry, reducing packing and heat buildup during deeper passes. With a maximum drilling depth of 2.479 inches and an overall length of 4-19/32 inches, it fits standard 3-jaw drill chucks and collet systems. It is a strong choice for job shops, aerospace maintenance operations, and industrial maintenance technicians who need consistent hole quality at Letter O diameter.

Key Features

• Letter O diameter (0.3161 inches) per DIN 338 specification
• 130-degree point angle with web-thinned, tapered web configuration for reduced entry force
• Parabolic flute profile promotes efficient chip removal, especially in aluminum and non-ferrous alloys
• Cobalt high-speed steel construction for elevated heat and wear resistance versus standard HSS
• Bright/uncoated finish — no coating concerns with reactive workpiece materials or cutting fluids
• Right-hand cut, straight-cylindrical shank compatible with standard drill chucks and collets

Compatibility

Designed as a DIN 338-compliant jobber drill for use in standard drill chucks and collet holders accepting a 0.3161-inch straight-cylindrical shank. Suitable for primary workpiece material codes K, N, and P, which correspond to non-ferrous metals, aluminum alloys, and similar materials.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance technicians familiar with rotary cutting tools. Secure the shank fully in the chuck or collet and verify runout before drilling. Always power down and lock out the machine spindle before changing tooling. Do not exceed the drill's rated maximum drilling depth of 2.479 inches without retracting to clear chips; the parabolic flute aids evacuation but periodic peck cycles are still recommended in deep-hole applications.