Guhring 9005150051100 Stub Drill Bit Size 7 0.201 in

Product Description

The GUHRING 9005150051100 is a stub-length (screw machine length) twist drill bit designed for high-productivity drilling in steel and cast iron. Built from powdered metal and coated with GUHRING nano-FIREX multi-layer coating, it delivers extended tool life in demanding production environments. The bit features a 130-degree point angle with cone relief geometry and a parabolic flute design that promotes fast chip evacuation. At 2.44 inches overall length and 0.201-inch diameter, this compact drill is sized for short-reach applications where rigidity and hole accuracy are priorities. Licensed machinists and tool room technicians are the primary installers.

This drill bit is suited for production machining, job shop operations, and screw machine work involving steel and cast iron workpieces. The stub length body reduces overhang and deflection, making it well suited for CNC machining centers, drill presses, and turret lathes where short-reach tooling is preferred. The straight cylindrical shank accepts standard collets and drill chucks within the appropriate diameter range. The parabolic flute geometry supports faster feed rates compared to standard spiral flutes, reducing cycle time in repetitive drilling operations.

Key Features

• nano-FIREX multi-layer coating for extended wear resistance in ferrous materials
• 130-degree point angle with cone relief for accurate self-centering and reduced thrust
• Parabolic flute design promotes aggressive chip evacuation at higher feed rates
• Stub length body minimizes deflection and improves hole straightness in short-reach setups
• Web-thinned construction reduces cutting force and improves penetration
• Manufactured to DIN 1897 standard with h8 diameter tolerance for consistent fit

Compatibility

Designed as a DIN 1897 stub-length replacement drill bit for use in standard straight-shank drill chucks and collet systems accepting a 0.201-inch diameter shank. Primary workpiece materials are steel and cast iron.

Installation Notes

Installation is performed by machinists or tooling technicians. Secure the straight cylindrical shank in a properly sized collet or drill chuck and verify runout before drilling. Power down and de-energize the machine spindle completely before changing tooling. Consult machine manufacturer feed and speed recommendations for powdered metal tooling in the target workpiece material — do not exceed rated RPM for the drill diameter.