Guhring 9007300042200 Carbide Stub Drill Bit 0.166 in

Product Description

The GUHRING 9007300042200 is a solid carbide stub-length (screw machine length) drill bit designed for precision drilling in demanding production and machining environments. Built to DIN 6539 standards, this bit features a 0.166 inch (No. 19 wire gauge) diameter, a 118-degree faceted point angle, and a web-thinned tip geometry that reduces thrust and improves chip evacuation at entry. The straight-cylindrical shank is 4.22 mm in diameter and fits standard drill chucks without modification. With a micrograin carbide construction and bright/uncoated finish, this bit is suited for general-purpose work where tool rigidity and dimensional accuracy are priorities.

This drill bit is rated for use in aluminum as its primary workpiece material, making it well-suited for production shops, CNC machining centers, and bench drill presses handling non-ferrous stock. The stub-length body limits deflection and improves hole straightness in shallow-to-moderate depth applications. Maximum drilling depth is 0.617 inches (15.67 mm), and the flute-to-diameter ratio is 3xD. The Series 730 designation identifies it within the Guhring product family for consistent tooling programs and replacement sourcing. This is a single-piece unit intended for direct replacement or tooling inventory restocking.

Key Features

• Solid micrograin carbide construction for hardness and wear resistance
• 118-degree faceted point angle with web-thinned tip reduces entry thrust
• Stub-length body minimizes deflection and improves hole concentricity
• Right-hand cut with regular spiral flute for efficient chip removal
• Bright/uncoated finish suitable for aluminum and general-purpose non-ferrous drilling
• Manufactured to DIN 6539 standards with h8 diameter tolerance

Compatibility

Designed as a general-purpose stub-length drill bit for use in standard drill chucks and CNC toolholders accepting a straight-cylindrical shank. Rated primarily for aluminum workpieces under the Series 730 general-purpose grade designation.

Installation Notes

Installation is performed by machinists or toolroom technicians in machine shop and production environments. Secure the straight shank firmly in a keyed or keyless chuck before use and confirm runout is within acceptable tolerance before drilling. Power down the machine and lock out energy sources before changing tooling. Consult applicable shop safety procedures and machine manufacturer guidelines for spindle speed and feed rate selection based on workpiece material.