Guhring 9005520011800 Stub Drill Bit 0.0465 in Hss

Product Description

The GUHRING 9005520011800 is a stub-length (screw machine length) twist drill bit designed for precision drilling in aluminum and other non-ferrous materials. Built to DIN 1897 standards, this Series 552 drill features a high-speed steel (HSS) construction with a bright/uncoated finish and a parabolic flute geometry for improved chip evacuation at shallow depths. It measures 0.0465 inches in diameter (Wire Size 56) with an overall length of 1.125 inches and a parabolic flute length of 0.2813 inches. The web-thinned, parallel-web configuration reduces entry force and improves hole accuracy. Licensed machinists, tool-and-die technicians, and production drilling operators are the primary users of this bit.

This drill bit is suited for production machining environments where short-length rigidity is required to minimize deflection in close-tolerance or shallow-hole applications. The 130-degree split point and web-thinned tip allow self-centering starts without a pilot hole or center punch in many setups. With a maximum drilling depth of 0.206 inches and a flute-to-diameter ratio of 3xD, it is optimized for stub-depth holes in aluminum workpieces. It is sold individually but requires a minimum order quantity of 10 units.

Key Features

• DIN 1897 stub-length geometry provides superior rigidity and reduced deflection in short-hole applications
• Parabolic flute design accelerates chip removal and reduces heat buildup during drilling
• Web-thinned parallel web lowers thrust force and improves self-centering at entry
• 130-degree drill point angle optimized for aluminum and soft non-ferrous materials
• Bright/uncoated HSS finish allows easy wear inspection and suits general-purpose production use
• Tight diameter tolerance of +0.000 to -0.014 mm supports close-tolerance hole requirements

Compatibility

Designed as an OEM-style stub-length drill bit conforming to DIN 1897 specifications, suitable for use in standard straight-shank drill chucks and collet holders accepting a 0.0465-inch cylindrical shank.

Installation Notes

Install in a compatible straight-shank chuck or collet holder and verify runout before production drilling begins. Secure the workpiece firmly to prevent movement during entry, especially in high-speed production setups. Power down and de-energize the spindle completely before changing or inspecting bits. Do not exceed the maximum drilling depth of 0.206 inches per pass without clearing chips to avoid bit deflection or breakage at this diameter.