Guhring 9055100089000 Screw Machine Drill Bit 0.3504 in

Product Description

The GUHRING 9055100089000 is a solid carbide screw machine length drill bit designed for high-performance drilling in demanding production environments. It measures 8.90 mm (0.3504 inches) in diameter with a 140-degree split point and a straight-cylindrical shank. The submicron carbide grade and coated finish allow it to run at elevated speeds and feeds in cast iron and steel applications. The web-thinned, SU-style point reduces thrust and improves centering without a separate spotting operation. This bit is installed and run by machinists, toolroom technicians, and maintenance professionals on CNC and manual drilling equipment.

This drill bit is suited for screw machine, CNC machining center, and drill press operations requiring a compact flute length and high dimensional accuracy. Primary workpiece materials are cast iron and steel. The 3xD flute-to-diameter ratio and 44 mm maximum drilling depth make it appropriate for through-hole and blind-hole work in short-to-medium depth applications. Coolant-through capability supports high-feed cycles and extended tool life when used with through-spindle coolant systems. It conforms to DIN 6537 K and carries a diameter tolerance of +0.006 to +0.021 mm.

Key Features

• Solid submicron carbide construction for rigidity and wear resistance in ferrous materials
• Coated finish extends tool life in cast iron and steel
• 140-degree SU split point with web thinning reduces entry thrust and improves hole accuracy
• Coolant-through design supports high-feed drilling with through-spindle coolant
• Straight-cylindrical shank with 10 mm shank diameter fits standard toolholders and drill chucks
• Conforms to DIN 6537 K with tight diameter tolerance of +0.006 to +0.021 mm

Compatibility

Designed as a high-performance screw machine length replacement for drilling cast iron and steel in CNC machining centers, drill presses, and screw machine setups requiring a straight-cylindrical shank and DIN 6537 K geometry.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Ensure the machine spindle is fully stopped and locked out before changing tooling. The straight-cylindrical shank should be clamped in a properly sized collet, drill chuck, or hydraulic holder to the full recommended grip length. Verify coolant-through passages are clear before engaging through-spindle coolant flow to prevent heat buildup and premature edge wear.