Guhring 9005520048000 Screw Machine Drill Bit 0.189 in

Product Description

The GUHRING 9005520048000 is a stub-length screw machine drill bit designed for high-throughput drilling applications where rigidity and chip evacuation are critical. Ground from high speed steel with a bright/uncoated finish, this bit features a parabolic flute geometry that aggressively moves chips out of the hole to reduce clogging and heat buildup. The 130-degree split point angle and web-thinned tip promote fast penetration with minimal thrust force. At 2-7/16 inches overall length with a 1-1/32 inch flute length and a maximum drilling depth of 0.74 inches, this bit is built for short, accurate holes in production environments. Right-hand cut with a straight-cylindrical shank for standard drill chuck compatibility.

This drill bit is suited for aluminum as the primary workpiece material and is rated as a high-performance grade tool for demanding shop and field conditions. The parabolic flute and parallel web configuration make it well-matched for CNC machining centers, drill presses, and screw machine operations where cycle time and hole quality matter. The stub body length adds stiffness compared to jobber-length bits, reducing deflection on entry. Series 552 bits conform to DIN 1897 standards, making them a recognized specification for screw machine length tooling across manufacturing and mechanical trades.

Key Features

• Parabolic flute geometry improves chip evacuation and reduces heat buildup during drilling
• Web-thinned tip with 130-degree point angle lowers entry thrust and improves centering
• Stub/screw machine length body increases rigidity and reduces deflection versus jobber bits
• High speed steel construction with bright/uncoated finish for general-purpose ferrous and non-ferrous use
• Straight-cylindrical shank fits standard drill chucks and collet holders without modification
• Conforms to DIN 1897 specification for consistent dimensional tolerances

Compatibility

Designed as a DIN 1897 Series 552 screw machine length drill bit for use in standard drill chucks, CNC toolholders, and collet systems that accept a straight-cylindrical shank; primary workpiece material rating is aluminum, with applicability across non-ferrous metals typical for this grade and coating.

Installation Notes

Installation and use should be performed by a qualified machinist or tool-and-die professional familiar with cutting tool setup and speeds-and-feeds selection. Secure the shank fully in the chuck or collet before operation and verify runout is within acceptable limits for the application. Always power down and de-energize the machine spindle before changing tooling. Do not exceed the maximum drilling depth of 0.74 inches per the tool geometry without a pecking cycle to clear chips.