Guhring 9007300007000 Stub Drill Bit 0.0276 in Carbide

Product Description

The GUHRING 9007300007000 is a stub-length (screw machine length) solid carbide drill bit designed for precision drilling in tight-clearance applications. Measuring 0.0276 inches (0.70 mm) in diameter with an overall length of 23.00 mm, this bit features a 118-degree faceted point angle and a web-thinned tip that reduces entry force and improves centering accuracy. The two-flute spiral design promotes efficient chip evacuation. Manufactured to DIN 6539 standards from micrograin solid carbide, it delivers consistent performance in general-purpose drilling operations where dimensional accuracy and tool rigidity are critical.

This drill bit is suited for drilling aluminum and other non-ferrous or soft ferrous materials in precision machining environments. The straight-cylindrical shank and h8 diameter tolerance make it compatible with standard drill chucks and collet systems used on CNC machining centers, drill presses, and screw machines. Its 3xD flute-to-diameter ratio and 4.50 mm flute length support a maximum drilling depth of 0.136 inches (3.45 mm), making it best suited for shallow-hole applications in production or maintenance machining settings.

Key Features

• Solid micrograin carbide construction for rigidity and wear resistance in small-diameter drilling
• 118-degree faceted point with web thinning for accurate entry and reduced thrust force
• Two-flute spiral geometry for efficient chip evacuation
• Bright/uncoated finish suitable for aluminum and general-purpose workpiece materials
• Manufactured to DIN 6539 specification with h8 diameter tolerance for consistent fit
• Straight-cylindrical shank fits standard chucks and collet holders

Compatibility

Designed as a general-purpose stub-length carbide drill bit per DIN 6539, compatible with standard straight-shank drill chucks and collet systems accepting a 0.70 mm shank diameter.

Installation Notes

Installation and use should be performed by a qualified machinist or tooling technician. Ensure the spindle is fully stopped and the machine is powered down before inserting or removing the bit from the chuck or collet. Secure the shank fully within the holding device and verify runout before drilling. At 0.70 mm diameter, this bit is fragile — use appropriate feed and speed parameters for the workpiece material to avoid breakage.