Guhring 9003360017000 Taper Length Drill Bit 0.0670 in Cobalt

Product Description

The GUHRING 9003360017000 is a cobalt taper length drill bit designed for demanding metal-cutting applications in maintenance, machining, and fabrication environments. Built to DIN 340 standards, it features a 0.0670-inch diameter with a parabolic flute geometry and a web-thinned, parallel web configuration that improves chip evacuation and reduces thrust during drilling. The 130-degree split point allows self-centering entry without a pilot hole. At 3 inches overall length with a 1-31/32-inch flute length, this bit handles deeper holes than a jobber-length equivalent while maintaining rigidity. It is sold individually and suited for high-performance applications where standard HSS bits fall short.

This drill bit is rated for use in cast iron, hardened materials, stainless steel, and steel. The cobalt construction provides heat resistance and edge retention when cutting abrasive or work-hardening alloys. The bright, uncoated finish is typical for cobalt tooling where coating adhesion is secondary to base material performance. Right-hand cut, cylindrical shank, and no coolant-through design make it compatible with standard drill presses, CNC machining centers, and handheld drills equipped with a matching chuck. The 10xD flute-to-diameter ratio supports hole depths up to 1.868 inches in a single pass under appropriate feed and speed conditions.

Key Features

• Cobalt construction for heat resistance and edge retention in stainless steel and hardened materials
• 130-degree split point for self-centering entry and reduced thrust
• Parabolic flute with web thinning for improved chip evacuation in deep holes
• DIN 340 taper length standard — longer than jobber length for increased reach
• Cylindrical shank fits standard drill chucks without adapters
• Right-hand cut, no coolant-through — compatible with conventional drilling setups

Compatibility

Designed for use in standard drill presses, CNC machining centers, and handheld power tools with a chuck sized for a 0.0669-inch cylindrical shank. Rated for cast iron, hardened materials, stainless steel, and steel per manufacturer material application data.

Installation Notes

This drill bit should be installed by a qualified machinist or trades professional familiar with cutting tool setup and speeds-and-feeds selection for cobalt tooling. Secure the workpiece firmly before drilling and verify chuck runout to protect the small-diameter shank from breakage. When drilling stainless steel or hardened materials, use appropriate cutting fluid and avoid dwelling at low feed rates, which can work-harden the material. Disconnect power to any machine tool before changing bits.