Guhring 9055200027100 Cobalt Stub Drill Bit 0.1065 in

Product Description

The GUHRING 9055200027100 is a cobalt stub-length (screw machine length) drill bit designed for high-speed drilling in demanding production environments. Built to DIN 1897 standards, it features a 0.1065-inch diameter with a four-facet split point ground at 118 degrees, a web-thinned tapered web configuration, and a regular spiral flute for efficient chip evacuation. The straight-cylindrical shank seats securely in standard drill chucks. This bit is suited to machinists, toolroom technicians, and production operators who require precise, repeatable hole entry without excessive feed pressure.

The 9055200027100 is intended for use on aluminum and similar non-ferrous and softer workpiece materials, though the cobalt construction provides added heat resistance for occasional use in harder materials. The stub-length body limits deflection and improves rigidity in short-reach drilling applications, making it a practical choice for drill press, CNC machining center, and turret lathe setups where controlled depth and accuracy are required. Maximum drilling depth is 0.470 inches. This bit ships individually with a minimum order quantity of 10 units.

Key Features

• Cobalt tool material with coated finish for improved wear and heat resistance
• 118-degree four-facet split point with web thinning for reduced thrust and clean entry
• Stub-length body reduces deflection and increases rigidity in tight-clearance applications
• Regular spiral flute with tapered web configuration for consistent chip evacuation
• Straight-cylindrical shank compatible with standard drill chucks and collets
• Manufactured to DIN 1897 specification with diameter tolerance of +0.000 to -0.014 mm

Compatibility

Designed as an OEM-specification stub-length drill bit per DIN 1897 for use in standard drill chucks, collet holders, and toolholders accepting a straight-cylindrical shank. Primary workpiece material listed by the manufacturer is aluminum.

Installation Notes

Installation is performed by machinists or toolroom personnel. Secure the straight-cylindrical shank fully in a properly sized drill chuck or collet before operation and verify runout before drilling. Power down and de-energize all machine tools before changing tooling. Follow applicable shop safety procedures and machine manufacturer guidelines for RPM, feed rate, and cutting fluid selection when drilling cobalt tooling into the target material.