Guhring 9003360085000 Cobalt Taper Length Drill Bit 8.5mm

Product Description

The GUHRING 9003360085000 is a taper length cobalt drill bit designed for demanding metal-cutting applications where standard-length drills fall short. Built from HSS-E cobalt, it handles tough materials including stainless steel, cast iron, hardened steel, and other hard alloys. The 130-degree point angle promotes fast penetration and reduces walking on entry. A parabolic flute geometry improves chip evacuation and helps maintain cutting efficiency at greater depths. The bit carries a bright, uncoated finish and is web-thinned for easier starting. It is primarily used by machinists, tool-and-die shops, maintenance mechanics, and industrial trades requiring reliable performance in ferrous and hard materials.

This drill bit fits production and maintenance drilling scenarios where a longer reach is required without switching to a reduced-shank design. With a flute length of 4-19/64 inches and an overall length of 6-1/2 inches, it reaches deeper holes than jobber-length equivalents. The straight cylindrical shank seats in standard drill chucks and collet holders without modification. Material applications listed by the manufacturer include cast iron, hard material, stainless steel, and steel, making it well-suited for fabrication, repair, and toolroom environments.

Key Features

• HSS-E cobalt construction for cutting stainless steel, cast iron, and hard materials
• 130-degree point angle for fast penetration and reduced bit walk on entry
• Parabolic flute design promotes efficient chip evacuation at extended depths
• Web-thinned tip reduces thrust requirements and eases drilling initiation
• Straight cylindrical shank compatible with standard chucks and collet systems
• Conforms to DIN 340 specification for taper length drill geometry

Compatibility

Designed as a DIN 340 taper length drill bit for use in standard drill chucks and collet holders accepting a 0.3346-inch (8.5 mm) cylindrical shank. Suitable for use in drill presses, machining centers, and hand-held drilling equipment rated for the shank diameter.

Installation Notes

Installation and use should be performed by a qualified machinist or trained tradesperson familiar with metal-cutting operations. Secure the shank fully in the chuck or collet and verify concentricity before drilling. Follow machine manufacturer guidelines for spindle speed and feed rate based on material type and bit diameter. Wear appropriate PPE including eye protection when operating drilling equipment.