Guhring 9085200087300 Screw Machine Drill Bit 0.3438 in

Product Description

The GUHRING 9085200087300 is a solid carbide screw machine length drill bit engineered for high-performance drilling in demanding materials. Built to Series 8520 and conforming to DIN 6537 K, this bit features a 140-degree split point with web thinning and HF point geometry that reduces thrust and improves entry accuracy. At 0.3438 inches (11/32 inches) in diameter, it runs a regular spiral flute with a 3xD flute-to-diameter ratio and a straight-cylindrical shank. Internal coolant-through capability allows cutting fluid delivery directly to the tip, making it well suited for high-cycle production drilling where heat management is critical. Licensed machinists and tool-room technicians are the primary users.

This drill bit is designed for production and precision machining applications, with titanium alloy listed as the primary workpiece material. Its screw machine length body keeps rigidity high in short-reach setups such as CNC machining centers, turret lathes, and gang-drilling fixtures. The coated solid carbide construction and web-thinned HF point make it a strong choice where hole quality and tool life matter in difficult-to-machine alloys. The 2-margin design supports accurate hole geometry and reduced wandering on entry.

Key Features

• Solid carbide construction rated to DIN 6537 K and Material Grade K40 for hardness and wear resistance in tough alloys
• 140-degree HF split point with web thinning reduces thrust load and improves self-centering on entry
• Coolant-through design delivers cutting fluid directly to the cutting edge for heat control in deep or high-cycle drilling
• Coated finish extends tool life and reduces built-up edge when machining titanium alloy and similar materials
• 3xD flute ratio with regular spiral and 2-margin geometry supports straight, accurate holes
• Straight-cylindrical shank fits standard drill chucks and collet holders without an adapter

Compatibility

Designed as an OEM-specification replacement or direct tooling selection for screw machine length drill bit applications in CNC machining centers, turret lathes, and similar setups requiring a straight-cylindrical shank bit in the 0.3000 to 0.3500 inch diameter range, with titanium alloy as the rated primary workpiece material.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or toolroom technicians familiar with carbide tooling. Ensure the spindle and tool holder are fully de-energized and at a complete stop before changing tooling. Carbide is brittle - avoid side-loading, interrupted cuts without proper feed adjustment, or dropping the bit on hard surfaces. Verify coolant-through lines are clear and pressure is correct before running at production feeds and speeds.