Guhring 9005150036600 Stub Drill Bit Size 27 0.144in

Product Description

The GUHRING 9005150036600 is a stub-length (screw machine length) twist drill bit designed for precision hole-making in steel and cast iron. It features a 130-degree cone relief point, a parabolic flute geometry, and a nano-FIREX multi-layer coating applied over a powdered metal substrate. The parabolic flute profile promotes fast chip evacuation, while the web-thinned point reduces entry thrust. With an overall length of 2.0472 inches and a flute length of 0.7874 inches, this bit is built for rigid, close-tolerance drilling in production and maintenance environments. The straight cylindrical shank measures 0.1441 inches in diameter and conforms to DIN 1897 standards.

This drill bit is suited for drilling steel and cast iron in applications where stub rigidity and reduced deflection are priorities. Typical scenarios include CNC machining centers, drill presses, and hand-held power tools used in fabrication shops, maintenance facilities, and production lines. The 3xD flute-to-diameter ratio and h8 shank diameter tolerance make it compatible with standard collet chucks and drill chucks requiring close-fit tool holding. It is sold individually and is appropriate for both production volume and single-operation use.

Key Features

• 130-degree cone relief point with web thinning for reduced thrust on entry
• Parabolic flute design promotes efficient chip evacuation in deep cuts
• nano-FIREX multi-layer coating extends tool life in steel and cast iron applications
• Stub length (DIN 1897) provides increased rigidity and reduced deflection
• Straight cylindrical shank with h8 tolerance fits standard drill chucks and collet holders
• Right-hand cutting, 2-flute configuration for general-purpose drilling

Compatibility

Designed as an OEM-style replacement or direct-fit drill bit for applications requiring a Size 27 (0.1440 inch) stub-length drill conforming to DIN 1897 specifications, suitable for use in standard drill chucks and collet systems accepting a 0.1441-inch straight shank.

Installation Notes

Installation and use should be performed by machinists or qualified trade professionals familiar with rotary cutting tools and machine tool safety. Ensure the machine spindle is fully stopped and powered down before inserting or removing the bit from the chuck or collet. Verify chuck or collet runout is within acceptable tolerance before use, as excess runout will accelerate wear on the h8 shank. Do not exceed the recommended maximum drilling depth of 0.5710 inches without retracting to clear chips.