Guhring 9005150081000 Stub Drill Bit 0.3189 in Powdered Metal

Product Description

The GUHRING 9005150081000 is a screw machine length (stub) drill bit designed for high-productivity drilling in cast iron and steel. Built to DIN 1897 standards, this Series 515 bit measures 0.3189 inches in diameter with a 130-degree split point and a parabolic flute profile. The powdered metal (PM) construction provides the hardness and wear resistance needed for production drilling environments. Web thinning reduces entry force and improves chip evacuation at the start of cut. The straight-cylindrical shank fits standard drill chucks without modification. Machinists, toolroom technicians, and CNC operators install this bit in screw machine, drill press, and machining center applications where stub-length rigidity is required over longer jobber-length alternatives.

This drill bit is suited for drilling cast iron and steel in production and job shop environments. The stub length body limits deflection in short-reach setups, making it a common choice for tight-clearance fixtures and multi-spindle screw machine operations. The parabolic flute geometry supports chip flow in deeper holes relative to diameter, and the DIN 1897 specification ensures dimensional consistency for tooling interchange across compatible toolholders. Maximum drilling depth is 0.978 inches. The 2-flute, right-hand cut design is standard for conventional CNC and manual drilling operations.

Key Features

• 0.3189 inch diameter with tolerance of +0.000 to -0.022 mm for close-tolerance hole work
• 130-degree standard point angle with web thinning for reduced entry thrust
• Parabolic flute geometry promotes efficient chip evacuation in steel and cast iron
• Powdered metal construction for elevated hardness and wear resistance versus standard HSS
• Straight-cylindrical shank for compatibility with standard drill chucks and collets
• DIN 1897 specification ensures dimensional conformance for tooling interchange

Compatibility

Designed as an OEM-style replacement and standard production drill bit for use in drill chucks and collets accepting straight-cylindrical shanks in the 0.3000 to 0.3500 inch diameter range. Primary workpiece materials are cast iron and steel.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Secure the shank fully in a properly sized drill chuck or collet before operation, and verify runout before production use. Always power down and lock out the machine before changing tooling. Do not exceed the maximum drilling depth of 0.978 inches without retracting to clear chips, particularly in blind-hole applications.