Guhring 9055140073000 Carbide Screw Machine Drill Bit

Product Description

The GUHRING 9055140073000 is a solid carbide screw machine length drill bit designed for high-performance drilling in demanding industrial and trade applications. Built to DIN 6537 K standards, this bit features a 0.2874-inch diameter, a 140-degree split point (SU type), and a web-thinned, parallel web configuration that reduces entry force and improves chip evacuation. The straight-cylindrical shank measures 8.00 millimeters in diameter and seats securely in standard drill chucks and collet holders. With a regular spiral flute geometry and right-hand cut, it delivers consistent, controlled material removal. Machinists, tool-and-die workers, and maintenance technicians working with ferrous metals rely on this series for accuracy and tool life.

This drill bit is rated for primary workpiece materials including cast iron and steel, making it well suited for production drilling, fixture work, and precision hole-making in job shop and manufacturing environments. The screw machine length format provides a shorter, stiffer profile compared to jobber-length bits, reducing deflection in tight setups or on CNC machining centers. The coated finish further supports tool longevity in abrasive or high-cycle applications. Maximum drilling depth is 1.183 inches (30.05 mm), and the flute-to-diameter ratio is 3xD, consistent with Series 5514 geometry.

Key Features

• Solid carbide submicron-grade construction for rigidity and wear resistance in ferrous materials
• 140-degree SU split point with web thinning reduces thrust force and self-centers on entry
• Screw machine length (shorter flute) minimizes deflection in tight or high-precision setups
• Right-hand cut, regular spiral flute for efficient chip removal in cast iron and steel
• Straight-cylindrical 8.00 mm shank fits standard chucks and collet systems
• Manufactured to DIN 6537 K specification for dimensional consistency

Compatibility

Designed as a Series 5514 screw machine length carbide drill bit for use in standard drill chucks, collet holders, and CNC tool holders accepting an 8.00 mm straight-cylindrical shank. Suitable for drilling cast iron and steel workpieces within the 0.2500- to 0.3000-inch drill bit size range.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or maintenance technicians familiar with cutting tool setup and machine operation. Ensure the machine spindle is fully stopped and de-energized before loading or changing tooling. Verify shank seating and runout before beginning a drilling cycle, as excessive runout accelerates carbide wear and can cause breakage. Coolant-through is not supported on this bit; external coolant or cutting fluid application is recommended when drilling steel at elevated feed and speed rates.