Guhring 9002230048000 Stub Drill Bit Size 12 Hss

Product Description

The GUHRING 9002230048000 is a stub-length (screw machine length) twist drill bit designed for precision hole-making in steel and cast iron. Built to DIN 1897 standards from M2 high-speed steel with an oxide finish, it features a 118-degree standard point angle and a web-thinned, tapered web configuration for reduced thrust and cleaner entry. The decimal inch diameter is 0.1890 inches (wire size 12), with an overall length of 2.4409 inches (62.00 mm) and a straight cylindrical shank. The compact stub-length body suits applications where rigidity and minimal deflection matter more than deep reach.

This drill bit is suited for production and maintenance work on ferrous materials, including steel and cast iron. The stub-length format is common in screw machine operations, CNC drilling fixtures, and short-travel drill press setups where a standard jobber-length bit would flex or chatter. The 2-flute regular spiral design provides efficient chip evacuation at typical feed and speed rates for HSS tooling. It is sold as a single unit and is appropriate for machinists, toolroom technicians, and industrial maintenance professionals.

Key Features

• DIN 1897 stub-length format for improved rigidity over jobber-length bits
• M2 high-speed steel construction with oxide finish for corrosion resistance and reduced friction
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• 2-flute regular spiral design optimized for steel and cast iron chip evacuation
• Straight cylindrical shank at 0.1890 inches (4.80 mm) for standard chuck compatibility
• Maximum drilling depth of 0.7400 inches (18.80 mm)

Compatibility

Designed as an OEM-style stub-length drill bit per DIN 1897 specification, suitable for use in standard drill chucks, CNC turrets, and screw machine spindles accepting a 0.1890-inch straight shank.

Installation Notes

This bit is installed by a machinist or toolroom technician in any chuck or collet sized for a 0.1890-inch straight shank. Ensure the machine spindle is fully stopped and the chuck is secure before changing tooling. Use appropriate cutting fluid or coolant for steel workpieces to extend tool life, noting this bit does not have through-coolant capability. Verify spindle speed and feed rate are appropriate for HSS tooling in the workpiece material before commencing drilling.