Guhring 9006180079400 Extra Length Cobalt Drill Bit

Product Description

The GUHRING 9006180079400 is a 5/16 inch (0.3125 inches) diameter extra length cobalt drill bit engineered for deep hole drilling applications. Built from high-performance cobalt tool steel and left uncoated, this bit runs a 130-degree split point with web thinning for reduced thrust and cleaner entry. The parabolic flute geometry runs 6.496 inches along the flute length, supporting efficient chip evacuation at depths up to 6.027 inches. Overall length is 9.449 inches. It is right-hand cutting with a straight cylindrical shank and belongs to GUHRING Series 618. This bit is installed by machinists and tool-and-die professionals working with deep-hole applications where standard-length tooling cannot reach.

This bit is designed for deep hole drilling at a flute-to-diameter ratio of 15xD. Primary workpiece materials include aluminum and titanium alloy, with secondary suitability for steel. It is particularly suited to production environments and job shop operations where consistent hole quality and depth are critical. The parabolic flute profile aids chip clearance in interrupted cuts and gummy or stringy materials. The uncoated finish allows for straightforward resharpening by qualified grinding technicians.

Key Features

• 5/16 inch diameter with a 130-degree standard point angle for reduced walking and clean entry
• Parabolic flute geometry for aggressive chip evacuation in deep holes
• Web-thinned, tapered web configuration reduces cutting thrust
• 15xD flute-to-diameter ratio supports drilling depths up to 6.027 inches
• High-performance cobalt construction handles aluminum, titanium alloy, and steel workpieces
• Right-hand cutting, straight cylindrical shank — drops into standard drill chucks and collet holders

Compatibility

Designed as a direct-fit replacement or production tooling option for applications requiring Series 618 DIN 1869 extra length drill bits with a 5/16 inch straight cylindrical shank. Compatible with standard drill chucks and collet systems accepting a 5/16 inch shank diameter.

Installation Notes

Installation and use should be performed by qualified machinists familiar with deep hole drilling procedures. Secure the shank fully in a drill chuck or collet to the specified grip depth before operation. Ensure the spindle and workpiece are properly fixtured to prevent deflection at extended reach. Comply with applicable shop safety standards and machine manufacturer guidelines when operating at speeds and feeds appropriate for cobalt tooling in the target workpiece material.