Guhring 9003290230000 Cobalt Stub Drill Bit 23mm

Product Description

The GUHRING 9003290230000 is a cobalt stub-length (screw machine length) drill bit designed for demanding metal-cutting applications. Built to DIN 1897 standards, it features a 23.00 mm diameter, a 130-degree cone-relief point, and a web-thinned geometry that reduces thrust and improves entry performance in hard materials. The two-flute, right-hand spiral configuration provides efficient chip evacuation in short-hole drilling cycles. At 146.00 mm overall length with a 72.00 mm flute length and a maximum drilling depth of 37.50 mm, this bit is sized for production environments where rigidity and repeatability matter. Licensed machinists and tool-and-die professionals are the primary installers.

This drill bit is rated for titanium alloy as its primary workpiece material, making it a practical choice for aerospace, medical-device, and precision-machining operations where standard high-speed steel tooling lacks the heat resistance needed. The M35 cobalt material grade delivers elevated red hardness, extending tool life in interrupted cuts and high-feed applications. The straight-cylindrical shank with an h8 diameter tolerance fits standard drill chucks and collet holders without modification, supporting use in CNC machining centers, turret lathes, and manual drill presses alike.

Key Features

• M35 cobalt construction for high heat resistance in titanium alloy and other hard materials
• 130-degree cone-relief point angle reduces thrust and improves self-centering on entry
• Web-thinned geometry lowers cutting force requirements and extends tool life
• DIN 1897 stub-length profile increases rigidity and minimizes deflection in short-hole drilling
• h8 shank diameter tolerance ensures consistent, repeatable chuck or collet fit
• Right-hand, regular-spiral fluting with a 3xD flute-to-diameter ratio for balanced chip flow

Compatibility

Designed as an OEM-specification replacement or production tooling selection for standard drill chucks and collet systems accepting a 23.42 mm straight-cylindrical shank; rated for titanium alloy primary workpiece material per Series 329 application guidelines.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer's setup procedures. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before loading or removing the bit. Verify chuck or collet bore cleanliness and proper seating to the full shank engagement depth before running. Coolant-through is not supported on this bit; use appropriate external flood or mist cooling for titanium alloy cutting.