Guhring 9005150057900 Screw Machine Drill Bit Size 1

Product Description

The GUHRING 9005150057900 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, the bit delivers extended tool life in demanding production environments. It features a 130-degree point angle with cone relief geometry and a parabolic flute profile that promotes fast chip evacuation. The overall length is 2.598 inches (66.00 mm), flute length is 1.102 inches (28.00 mm), and maximum drilling depth reaches 0.761 inches (19.32 mm). This is a right-hand cutting, straight-shank bit conforming to DIN 1897. Machinists, tool-and-die technicians, and maintenance professionals install this bit in screw machines, CNC drill presses, and hand-held production setups.

The 9005150057900 is sized for wire size Number 1 (0.2280 inch decimal equivalent) and falls within the 0.2000 to 0.2500 inch diameter range. Its stub length and parabolic flute make it well suited for short, precise holes in production runs on steel and cast iron workpieces where chip packing and heat buildup are common concerns. The web-thinned point reduces thrust force at entry, making it practical for both CNC machining centers and manual drill press operations requiring accurate hole positioning without a pilot hole.

Key Features

• Powdered metal construction with nano-FIREX multi-layer coating for extended wear resistance in ferrous materials
• 130-degree cone relief point angle reduces thrust and improves centering on steel and cast iron
• Parabolic fast-spiral flute (3xD flute-to-diameter ratio) promotes efficient chip evacuation in deep passes
• Web-thinned design lowers cutting force at entry without sacrificing point stability
• Straight cylindrical shank (0.2280 inch diameter, h8 tolerance) fits standard drill chucks and collet holders
• DIN 1897 stub-length standard ensures consistent fitment in production tooling setups

Compatibility

Designed as an OEM-style replacement or direct production substitute for stub-length drill bits conforming to DIN 1897 in wire size Number 1 (0.2280 inch). Primary workpiece materials are steel and cast iron.

Installation Notes

This bit is installed by machinists and tool-room technicians in drill chucks or collet holders rated for straight-shank tooling. Ensure the machine spindle is fully stopped and locked out before changing tooling. Verify chuck runout is within acceptable limits for the h8 shank tolerance to avoid premature wear or hole-size deviation. Coolant-through is not supported on this bit; apply external cutting fluid appropriate for the workpiece material when drilling steel or cast iron at sustained depths.