Guhring 9005150030500 Stub Drill Bit 0.12 in Powdered Metal

Product Description

The GUHRING 9005150030500 is a screw machine length (stub) drill bit engineered for high-productivity drilling in tight-clearance applications. Built from powdered metal with a coated finish, this bit delivers hardness and wear resistance suited for repetitive production work. It features a 0.12 inch (wire size 31) diameter, a 130-degree cone relief point, and a parabolic fast-spiral flute geometry. The overall length is 1.9291 inches, with a flute length of 0.6299 inches. The web-thinned design reduces thrust force at entry. Licensed machinists, tool and die technicians, and CNC setup techs are the typical installers.

This bit is designed for drilling cast iron and steel in screw machine, CNC lathe, and short-run production environments where a standard jobber-length drill would introduce unnecessary deflection. The straight-cylindrical shank fits standard drill chucks and collet holders without modification. The stub body length keeps the tool stiff in deep fixture setups. The 3xD flute-to-diameter ratio supports chip evacuation in blind and through holes up to a maximum drilling depth of 0.5290 inches. It ships as a single unit and is appropriate for both bench-top drill press work and automated CNC applications.

Key Features

• Powdered metal construction with coated finish for extended wear life in steel and cast iron
• 130-degree cone relief point angle reduces thrust and improves centering on entry
• Parabolic fast-spiral flute promotes efficient chip evacuation in short, deep holes
• Web-thinned design lowers cutting force and extends tool life in production drilling
• Stub length body minimizes deflection in tight-clearance and fixture-mounted applications
• Straight-cylindrical shank is compatible with standard drill chucks and collet holders

Compatibility

Designed as a stub-length OEM-style drill bit for use in standard drill chucks and collet-style toolholders accepting a straight-cylindrical shank. Conforms to DIN 1897 standards. Suitable for drilling cast iron and steel workpieces.

Installation Notes

Installation and use should be performed by qualified machinists or tooling technicians familiar with rotating cutting tools. Ensure the machine spindle is fully stopped and power is locked out before inserting or removing the bit from the chuck or collet holder. Confirm shank seating depth and chuck runout before beginning a drilling cycle. Follow applicable workplace safety standards for rotating tool operation and eye protection.