Guhring 9005150040400 Stub Drill Bit 0.159 in Powdered Metal

Product Description

The GUHRING 9005150040400 is a screw machine length (stub) drill bit designed for efficient material removal in metal fabrication and machining operations. Built from powdered metal with a coated finish, this bit features a parabolic flute geometry and a 130-degree drill point angle for fast chip evacuation and reduced thrust in harder materials. The straight-cylindrical shank fits standard drill chucks without modification. At 2.165 inches overall length and a 0.159-inch diameter (Wire Size 21), this bit is suited for high-cycle production drilling where compact tool length reduces deflection and improves hole accuracy. It is installed by machinists and tool-and-die tradespeople in CNC and manual drill press applications.

This stub-length drill bit is intended for drilling cast iron and steel in production machining environments. The parabolic flute design accelerates chip removal during deep-relative-to-diameter passes, keeping the flute clear without coolant-through capability. The web-thinned point reduces walking and cutting resistance at entry. Typical applications include through-hole drilling on ferrous workpieces in job shop, manufacturing, or maintenance repair operations where a shorter, more rigid drill profile is preferred over jobber-length alternatives.

Key Features

• Powdered metal construction with coated finish for extended tool life in ferrous materials
• 130-degree drill point angle reduces thrust and improves centering on hard materials
• Parabolic flute profile promotes fast chip evacuation in short-hole drilling
• Web-thinned point minimizes entry resistance and reduces heat buildup at the tip
• Straight-cylindrical shank compatible with standard 3-jaw and collet-style chucks
• Stub-length body (2.165 inches overall) increases rigidity and reduces deflection vs. jobber-length bits

Compatibility

Designed for drilling cast iron and steel workpieces. Conforms to DIN 1897 standards. Diameter tolerance h8. Suitable for use in drill presses, CNC machining centers, and manual drilling equipment accepting straight-cylindrical shank tooling in the 0.159-inch diameter range.

Installation Notes

Install and remove this drill bit only while the spindle is fully stopped and the machine is locked out per applicable machine safety procedures. Secure the straight-cylindrical shank firmly in the chuck to the full gripping depth before operation to prevent slippage. This bit does not support coolant-through delivery; apply cutting fluid externally when drilling steel at higher feed rates to manage heat. Inspection and replacement of worn tooling should follow the shop's standard tool-life management protocol.