Guhring 9005150031000 Stub Drill Bit 0.122 in 130 Deg Pm

Product Description

The GUHRING 9005150031000 is a screw machine length (stub) drill bit designed for high-productivity drilling in ferrous materials. Built to DIN 1897 standards, it features a powdered metal (PMASP60 grade) construction with a coated finish for extended tool life. The 0.122-inch diameter bit runs a 130-degree split point with web thinning to reduce thrust and improve centering on entry. The parabolic flute geometry promotes efficient chip evacuation, making this bit well-suited for production drilling environments. At 1.9291 inches overall length, the stub format provides added rigidity compared to jobber-length bits, reducing deflection in short-reach applications.

This drill bit is intended for drilling cast iron and steel workpieces in screw machine, CNC lathe, and general production machining setups. The straight-cylindrical shank fits standard drill chucks and collet holders without modification. The 3xD flute-to-diameter ratio and parallel web configuration support consistent chip flow in through-hole and blind-hole drilling. Maximum drilling depth is 0.526 inches, appropriate for the stub-length format. It is suited to machine shops, production facilities, and maintenance operations where short, rigid tooling is preferred over standard-length drill bits.

Key Features

• Powdered metal construction (PMASP60 grade) with coated finish for wear resistance in steel and cast iron
• 130-degree point angle with web thinning reduces entry thrust and improves self-centering
• Parabolic flute geometry promotes fast, clean chip evacuation
• Stub length (DIN 1897) provides added rigidity and reduced deflection versus jobber-length bits
• Straight-cylindrical shank fits standard drill chucks and collet systems
• Right-hand cut, 2-flute configuration standard for general drilling operations

Compatibility

Designed as an OEM-style production drill bit conforming to DIN 1897 stub-length standards, compatible with any standard drill chuck or collet holder accepting a straight-cylindrical shank in the 0.122-inch diameter range. Primary workpiece materials are cast iron and steel.

Installation Notes

Installation and use should be performed by qualified machinists or tooling technicians familiar with cutting tool setup. Ensure the drill chuck or collet is properly tightened and the workpiece is securely fixtured before operation. Do not exceed the recommended maximum drilling depth of 0.526 inches for this stub-length configuration. Inspect the cutting edges for wear or chipping before each use and replace tooling that shows visible damage to avoid workpiece or machine damage.