Guhring 9005520023000 Stub Drill Bit 0.0906 in Hss

Product Description

The GUHRING 9005520023000 is a screw machine length (stub) drill bit designed for high-throughput drilling in production and machine shop environments. Built from high speed steel with a bright/uncoated finish, this bit features a parabolic flute geometry and a web-thinned, parallel web configuration that reduces thrust and improves chip evacuation. The 130-degree split point provides self-centering entry without a pilot hole. At 0.0906 inches (2.30 mm) in diameter with an overall length of 1.5748 inches (40.00 mm), it fits standard chucks and automatic drilling equipment. Licensed machinists, tool and die technicians, and precision fabricators are the typical end users.

This stub-length drill bit is suited for drilling aluminum and other non-ferrous materials in CNC machining centers, turret lathes, and screw machines where short flute length and rigid geometry reduce deflection. The 3xD flute-to-diameter ratio and 0.5120-inch (13.00 mm) flute length make it appropriate for shallow-to-moderate depth holes up to 0.3760 inches (9.55 mm). It conforms to DIN 1897 standards, making it a reliable fit in metric-dimensioned production setups.

Key Features

• Parabolic flute design promotes efficient chip evacuation in aluminum and soft metals
• Web-thinned parallel web reduces axial thrust and improves penetration rate
• 130-degree point angle with standard point type for self-centering entry
• Stub length construction increases rigidity and minimizes deflection
• Bright/uncoated HSS finish suitable for general-purpose production drilling
• Conforms to DIN 1897 specification for consistent dimensional accuracy

Compatibility

Designed as a DIN 1897-compliant stub drill bit in the GUHRING Series 552, rated for aluminum as the primary workpiece material and compatible with standard straight-cylindrical shank chucks and collets.

Installation Notes

Installation is performed by machinists and tool setup technicians in machine shop environments. Ensure the spindle is fully stopped and the machine is locked out before changing tooling. Secure the straight-cylindrical shank fully in the chuck or collet to the recommended grip depth before tightening. Do not exceed the maximum drilling depth of 0.3760 inches without retracting to clear chips, particularly in aluminum where built-up edge can form rapidly.