Guhring 9005150030000 Stub Drill Bit 0.1181 in

Product Description

The GUHRING 9005150030000 is a stub-length (screw machine length) twist drill bit built for production drilling in cast iron and steel. Manufactured from powdered metal (PMASP60 grade) with a coated finish, this bit delivers consistent performance in high-cycle applications where tool life and hole quality matter. The 130-degree point angle and parabolic flute geometry promote efficient chip evacuation and reduce thrust in harder ferrous materials. With an overall length of 1.811 inches and a straight-cylindrical shank of 0.1181 inches diameter, it fits standard drill chucks and automatic screw machine spindles. Web-thinned construction with a parallel web configuration reduces entry force at the cutting edge.

This bit is well suited for production machining environments — screw machine shops, CNC drilling cells, and manual drill press operations targeting cast iron and steel workpieces. The stub length design provides added rigidity compared to jobber-length bits, making it a common choice when drilling shallow holes in tight clearances or fixture-held parts. With a maximum drilling depth of 0.453 inches and a 3xD flute-to-diameter ratio, it is optimized for short, precise holes rather than deep-bore applications. Licensed machinists and tool-and-die technicians typically specify this geometry for high-volume repetitive drilling.

Key Features

• Powdered metal (PMASP60) construction with coated finish for extended tool life in ferrous materials
• 130-degree point angle reduces thrust and improves self-centering on cast iron and steel
• Parabolic flute profile promotes rapid chip evacuation in short-hole drilling
• Web-thinned, parallel web configuration lowers cutting entry force
• Stub-length body adds radial rigidity over standard jobber-length drills
• Straight-cylindrical shank fits standard three-jaw drill chucks and collet systems

Compatibility

Manufactured to DIN 1897 specification. Designed for use in cast iron and steel workpieces. Fits any drill chuck or collet accepting a 0.1181-inch straight-cylindrical shank. Part of the GUHRING Series 515 stub drill family covering the 0.1000 to 0.1500 inch diameter range.

Installation Notes

Installation and tool changes should be performed with the machine at a full stop and all energy isolated per lockout/tagout procedures. Verify chuck or collet runout before seating the shank, as excess runout accelerates wear on a bit of this diameter. Coolant-through is not supported by this bit; external coolant or cutting fluid should be applied at the workpiece surface when drilling steel. Dispose of worn bits per applicable shop safety protocols, as powdered metal tooling can present sharp edge hazards.