Guhring 9011840158700 Screw Machine Drill Bit 0.625in

Product Description

The GUHRING 9011840158700 is a solid carbide screw machine length drill bit engineered for high-performance drilling in demanding production environments. Sized at 0.625 inches (5/8 inch) in diameter with a 140-degree split point (SU-style), it delivers aggressive penetration with reduced thrust and walking. The two-flute spiral design with web thinning promotes efficient chip evacuation. With an overall length of 115 mm and a flute length of 65 mm, this bit is built for stub-length rigidity. It carries a coated finish and conforms to DIN 6537 K standards, making it a reliable choice for machinists, tool crib managers, and CNC operators working in steel and cast iron applications.

This drill bit is suited for screw machine operations, CNC machining centers, and short-hole drilling applications in production shops. Primary workpiece materials include cast iron and steel. The whistle notch shank measures 16 mm in diameter, providing positive drive retention in standard toolholders. A maximum drilling depth of 1.622 inches (41.20 mm) covers the majority of stub-depth bores typical in high-volume part runs. The 3xD flute-to-diameter ratio keeps the tool compact and stiff for consistent hole quality at elevated feed rates.

Key Features

• Solid carbide construction with K40 material grade for wear resistance in ferrous materials
• 140-degree SU point with web thinning reduces entry thrust and eliminates center drilling in many setups
• Whistle notch shank (16 mm diameter) locks positively into compatible toolholders
• Coated finish extends tool life in cast iron and steel cutting applications
• Conforms to DIN 6537 K standard for dimensional consistency and interchangeability
• Screw machine (stub) length geometry maximizes rigidity and minimizes deflection

Compatibility

Designed as a Series 1184 screw machine length drill for use in CNC machining centers and production drilling equipment that accept a 16 mm whistle notch shank. Intended for drilling cast iron and steel workpieces per the manufacturer specification.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. Ensure the machine spindle and toolholder are fully de-energized and at a complete stop before changing tooling. Seat the whistle notch shank fully into the holder and verify drive pin engagement before tightening. Do not exceed the maximum drilling depth of 1.622 inches without retracting to clear chips, and always apply appropriate cutting fluid or coolant per shop practice for the workpiece material.