Guhring 9055240038000 Cobalt Stub Drill Bit 0.1495 in

Product Description

The GUHRING 9055240038000 is a cobalt (M35 grade) screw machine length drill bit designed for high-speed drilling in demanding shop and field applications. Built to DIN 1897 standards, this stub-length bit measures 0.1495 inches (Wire Size 25) in diameter with a 118-degree four facet split point for fast penetration and accurate starting without a center punch. The web-thinned, tapered web construction reduces thrust and improves chip evacuation. At 55 millimeters overall length with a 22-millimeter flute length, it fits short-reach drilling setups where rigidity matters. Licensed tradespeople and machinist-grade technicians working in metal fabrication, HVAC component assembly, and mechanical service rely on this geometry for consistent hole quality in aluminum and similar materials.

This drill bit is suited for stub-length drilling applications where reduced overhang minimizes deflection and improves positional accuracy. The straight-cylindrical shank seats securely in standard drill chucks and quick-change holders. Primary workpiece material is aluminum, though the M35 cobalt alloy construction handles other non-ferrous and ferrous materials encountered in production and maintenance drilling. The 3xD flute-to-diameter ratio and right-hand spiral flute design promote efficient chip removal in through-hole and blind-hole drilling at moderate to high spindle speeds. Maximum drilling depth is 0.6420 inches (16.30 millimeters).

Key Features

• M35 cobalt alloy construction for heat and wear resistance in demanding drilling applications
• 118-degree four facet split point with web thinning for reduced thrust and self-centering entry
• DIN 1897 stub length for maximum rigidity and minimal deflection
• Bright/uncoated finish — no coating buildup to affect close-tolerance hole sizing
• Straight-cylindrical shank compatible with standard drill chucks and quick-change tooling systems
• Right-hand cut with regular spiral flute for positive chip evacuation

Compatibility

Designed as a DIN 1897 stub-length replacement drill bit for use in standard drill chucks and quick-change holders accepting a 3.80 millimeter straight-cylindrical shank; primary listed workpiece material is aluminum.

Installation Notes

Install in a drill press, CNC machining center, or hand drill with a properly sized chuck before energizing the spindle. Confirm shank seating and chuck tightness before operation. Follow applicable shop safety standards and wear appropriate eye protection when drilling. Do not exceed the maximum drilling depth of 0.6420 inches without retracting and clearing chips to prevent bit binding or breakage.