Guhring 9005520080300 Drill Bit 0.3161 in Hss Series 552

Product Description

The GUHRING 9005520080300 is a screw machine length (stub) drill bit designed for precision drilling in aluminum and other non-ferrous materials. Built from high-performance high speed steel with a bright/uncoated finish, this Series 552 bit features a parabolic flute geometry and web-thinned point for efficient chip evacuation and reduced thrust. The 130-degree point angle improves stability on entry, making it well suited for high-cycle production drilling environments. At 3.125 inches overall length with a 1.4375-inch flute length, it fits standard drill chucks and spindles without modification. Diameter tolerance is held to +0.000 to -0.022 mm for consistent hole sizing.

This drill bit is intended for use in screw machine operations, CNC drilling centers, and manual drill press applications where a compact stub-length tool is required for rigidity and accuracy. The straight-cylindrical shank accepts standard drill chucks. Primary workpiece material is aluminum, though the geometry is also effective in plastics and softer non-ferrous alloys. The parabolic flute profile at a 3xD flute-to-diameter ratio moves chips away from the cutting zone efficiently, reducing heat buildup and extending tool life in repetitive drilling cycles.

Key Features

• Parabolic flute geometry promotes fast chip evacuation in aluminum and soft non-ferrous materials
• Web-thinned, parallel-web construction reduces axial thrust and improves point stability
• 130-degree standard point angle for self-centering entry and clean hole initiation
• High-performance high speed steel for durability in production drilling applications
• Stub (screw machine) length provides added rigidity compared to jobber-length bits
• Conforms to DIN 1897 specification for consistent dimensional standards

Compatibility

Designed as an OEM-style replacement or direct-use drill bit for screw machine operations and CNC drilling setups requiring a stub-length, straight-shank bit in the 0.3000 to 0.3500 inch diameter range per DIN 1897 specification.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or tool and die technicians. Ensure the spindle or drill press is fully powered down and locked out before changing tooling. Secure the straight-cylindrical shank firmly in a properly sized drill chuck to the manufacturer-recommended clamping depth before operation. Always verify workpiece fixturing and spindle speed settings are appropriate for the material being drilled before beginning a cut.