Guhring 9055100085000 Carbide Drill Bit 8.50mm 0.3346in

Product Description

The GUHRING 9055100085000 is a solid carbide screw machine length drill bit designed for high-performance drilling in demanding production environments. Built to DIN 6537 K standards, it features a 140-degree split point (SU type) with web thinning for reduced thrust and improved chip evacuation. The 8.50mm (0.3346 inches) diameter bit runs a 2-flute regular spiral configuration with coolant-through capability, making it well-suited for high-cycle machining operations where heat management is critical. Machinists and tooling professionals working in precision manufacturing and job shop environments rely on this series for consistent hole quality in ferrous materials.

This drill bit is rated for primary use in cast iron and steel workpieces. The screw machine length geometry — shorter overall length relative to standard jobber drills — provides added rigidity and reduced deflection in CNC machining centers, turret lathes, and screw machine applications. The straight-cylindrical shank diameter of 10.00mm seats securely in standard drill chucks and collet holders. The 3xD flute-to-diameter ratio supports drilling depths up to 44.00mm, keeping chip flow controlled through the full cut.

Key Features

• Solid carbide submicron-grade construction for extended tool life in hard and abrasive materials
• 140-degree SU split point with web thinning reduces entry thrust and self-centers on the workpiece
• Coolant-through design channels cutting fluid directly to the tip for thermal control at high feed rates
• DIN 6537 K specification ensures dimensional consistency and interchangeability with standard toolholders
• Coated finish improves surface hardness and lubricity for reduced built-up edge in steel and cast iron
• Parallel web configuration and regular spiral flutes promote stable chip evacuation throughout the cut

Compatibility

Designed as an OEM-style replacement and production drill bit for use in CNC machining centers, screw machines, and turret lathes requiring a straight-shank carbide drill in the 8.00mm to 9.50mm diameter range per DIN 6537 K specification.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician familiar with carbide cutting tools. Ensure the machine spindle and toolholder are free of chips and runout before seating the shank. Carbide tooling is brittle — avoid side loads, interrupted cuts without proper parameters, and contact with hardened surfaces during handling. Verify coolant-through passages are clear and system pressure is appropriate for the application before beginning the cut.