Guhring 9055200131000 Cobalt Drill Bit 33/64 Inch

Product Description

The GUHRING 9055200131000 is a cobalt screw machine length drill bit sized at 33/64 inch, built for demanding metal-cutting applications. Part of the Series 5520 lineup and conforming to DIN 1897, this stub-length drill features a 118-degree four facet split point and a web-thinned, tapered web configuration for reduced thrust and improved chip evacuation. The straight cylindrical shank measures 13.10 mm in diameter and is compatible with standard drill chucks and collet holders. Two spiral flutes with a 3xD flute-to-diameter ratio handle chip removal effectively. Cobalt construction provides heat and wear resistance needed when drilling hard or abrasive materials.

This drill bit is intended for use in screw machine operations, CNC drilling, and manual drill press work. The stub flute length keeps the tool rigid under high feed rates, making it well suited for production environments where hole-to-hole consistency matters. The primary listed workpiece material is aluminum, though the cobalt alloy construction also handles hardened steels and other challenging materials. The four facet split point self-centers on entry, reducing the need for a center punch on flat stock. Right-hand cut geometry pairs with standard right-hand spindle rotation found on most machine tools.

Key Features

• Cobalt tool material for elevated heat resistance during high-speed drilling
• 118-degree four facet split point with web thinning for reduced thrust and self-centering entry
• Stub screw machine length (DIN 1897) for increased rigidity under load
• Two spiral flutes at 3xD ratio for efficient chip evacuation
• Straight cylindrical shank, 13.10 mm diameter, fits standard chucks and collets
• Diameter tolerance held to +0.000 to -0.027 mm for consistent hole sizing

Compatibility

Designed as a DIN 1897 stub-length screw machine drill for use in standard drill chucks and collet holders accepting a 13.10 mm straight cylindrical shank.

Installation Notes

Installation and use should be performed by a qualified machinist or tool-room technician. Ensure the machine spindle is fully stopped and locked out before loading or changing tooling. Secure the shank fully within the chuck or collet to the recommended gripping depth before applying cutting loads. Do not exceed the maximum drilling depth of 1.234 inches (31.35 mm) per the manufacturer specification for this flute length.