Guhring 9005150077000 Stub Drill Bit 0.3031 in Powdered Metal

Product Description

The GUHRING 9005150077000 is a screw machine length (stub) drill bit designed for high-production metal drilling in CNC and manual machine tool applications. Built from powdered metal (PMASP60 grade) with a coated finish, it offers improved wear resistance and heat dissipation compared to standard HSS tooling. The bit features a 130-degree point angle with web thinning for reduced thrust and easier entry into ferrous workpieces. A parabolic flute geometry promotes efficient chip evacuation, particularly useful in deeper pass drilling. At 3.1102 inches overall length with a 1.4567-inch flute, this stub-length bit provides rigidity for accurate hole placement. Licensed machinists, tool-and-die technicians, and production drilling operators are the primary users.

This drill bit is suited for drilling cast iron and steel in production machining environments. The stub-length design limits deflection and improves hole straightness in short-reach drilling setups. It conforms to DIN 1897 standards, making it appropriate for shops working to metric or mixed-tolerance specifications. The straight-cylindrical shank fits standard drill chucks and collet holders. With a maximum drilling depth of 1.0020 inches and a 3xD flute-to-diameter ratio, it is well matched to through-hole and moderate blind-hole work in ferrous stock.

Key Features

• Powdered metal (PMASP60) construction with coated finish for extended tool life in ferrous materials
• 130-degree point angle with web thinning reduces entry thrust and improves centering
• Parabolic flute design promotes fast, clean chip evacuation
• Stub-length body (3.1102 inches overall) maximizes rigidity and minimizes runout
• Straight-cylindrical shank compatible with standard drill chucks and collet systems
• Conforms to DIN 1897 specification for dimensional consistency

Compatibility

Designed as an OEM-style replacement or direct-use stub drill bit for production machining of cast iron and steel workpieces, compatible with any standard drill chuck or collet holder accepting a 0.3031-inch straight-cylindrical shank.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or tooling technicians familiar with machine tool setup. Ensure the spindle is fully stopped and the machine is in a safe state before inserting or removing the bit from the chuck or collet. Verify chuck or collet runout is within acceptable tolerance before beginning production runs to avoid premature tool wear. Coolant-through capability is not supported on this bit, so flood or mist external coolant is recommended when drilling ferrous materials at higher feeds and speeds.