Guhring 9005520044500 Stub Drill Bit 0.1752 in Hss

Product Description

The GUHRING 9005520044500 is a screw machine length (stub) drill bit designed for high-performance drilling in metalworking and machining applications. Built from high speed steel with a bright/uncoated finish, it features a parabolic flute geometry and a web-thinned tip that reduces thrust and improves chip evacuation. The 130-degree split point provides fast, accurate starts without a center punch. At 0.1752 inches (4.45 mm) in diameter with an overall length of 2.2835 inches, this bit is sized for use in CNC machining centers, drill presses, and screw machine setups where a shorter, stiffer tool profile is required. It conforms to DIN 1897 standards and is rated as a high performance grade bit.

This drill bit is optimized for aluminum as its primary workpiece material, making it well suited for production shops, job shops, and maintenance operations where clean, fast holes in non-ferrous materials are needed. The parabolic flute with a 3xD flute-to-diameter ratio promotes efficient chip clearing in deeper holes. The straight-cylindrical shank fits standard drill chucks and collet holders without modification. Its stub length design minimizes deflection in tight fixtures or short-reach applications where standard-length bits introduce runout or chatter.

Key Features

• 130-degree drill point angle for fast engagement and self-centering starts
• Parabolic flute geometry with web thinning for improved chip evacuation and reduced thrust
• High speed steel construction with bright/uncoated finish suitable for aluminum and non-ferrous materials
• Stub (screw machine) length profile increases rigidity and reduces deflection
• Straight-cylindrical shank fits standard chucks and collets
• Meets DIN 1897 specification for stub drills

Compatibility

Designed as a DIN 1897 stub-length drill bit for use in standard drill chucks, collet holders, and CNC tooling systems accepting a 0.1752-inch straight-cylindrical shank. Suited for aluminum as the primary workpiece material per manufacturer specification.

Installation Notes

This bit is installed by a machinist or toolroom technician into a compatible drill chuck or collet system. Ensure the machine spindle is fully stopped and locked out before changing tooling. Verify chuck or collet bore matches the 0.1752-inch shank diameter for proper seating and concentricity. Use appropriate cutting fluid or mist coolant for aluminum to maximize tool life, noting that this bit does not have through-coolant capability.