Guhring 9055100071000 Carbide Screw Machine Drill Bit

Product Description

The GUHRING 9055100071000 is a solid carbide screw machine length drill bit designed for high-performance drilling in demanding industrial and trade applications. Built to DIN 6537K standards, this bit features a 140-degree split point (SU type), two spiral flutes, and a web-thinned, parallel web configuration that reduces entry force and improves chip evacuation. The straight-cylindrical shank measures 8.00 mm in diameter, and the overall length is 79.00 mm (approximately 3.11 inches). Coolant-through capability makes it suitable for high-speed, high-volume operations. Licensed machinists, tool-and-die technicians, and maintenance mechanics are the primary installers of this tooling.

This drill bit is rated for use in cast iron and steel workpieces, making it appropriate for production machining, general metalworking shops, and maintenance repair environments. The screw machine length (stub) format provides increased rigidity compared to jobber-length bits, which reduces deflection in CNC machining centers, turret lathes, and drill presses. The 3xD flute-to-diameter ratio supports a maximum drilling depth of 38.00 mm (approximately 1.50 inches). The submicron carbide grade and coated finish extend tool life in interrupted cuts and abrasive materials.

Key Features

• Solid submicron carbide construction for extended tool life in steel and cast iron
• 140-degree SU split point reduces walking and lowers thrust requirements
• Coolant-through design supports high-speed and deep-hole drilling cycles
• Web-thinned parallel web improves chip flow and reduces heat buildup
• DIN 6537K specification ensures dimensional consistency and fitment in standard toolholders
• Screw machine (stub) length provides greater rigidity and reduced deflection versus jobber bits

Compatibility

Designed as a direct-fit replacement or new installation for toolholders and chucks accepting a straight-cylindrical 8.00 mm shank, conforming to DIN 6537K. Primary workpiece materials are cast iron and steel.

Installation Notes

Installation should be performed by qualified machinists or tooling technicians familiar with carbide insert and solid carbide tooling. Ensure the spindle and toolholder are fully powered down and secured before loading or unloading the bit. Carbide tooling is brittle — avoid side loads, interrupted entries at high feed rates without proper support, and contact with hardened surfaces outside the rated material range. Verify coolant-through supply pressure and flow are compatible with machine spindle specifications before enabling through-tool coolant.