Guhring 9005150034000 Stub Drill Bit 0.1339 in 130 Deg

Product Description

The GUHRING 9005150034000 is a stub-length (screw machine length) powdered metal drill bit designed for high-productivity drilling in cast iron and steel. Built to DIN 1897 standards, this 0.1339-inch diameter bit features a 130-degree point angle, parabolic flute geometry, and a web-thinned tip that reduces thrust and improves chip evacuation at the start of the cut. The straight-cylindrical shank seats directly in standard drill chucks or quick-change holders. With an overall length of 2.0472 inches and a flute length of 0.7874 inches, this bit is sized for close-quarters and screw machine applications where a shorter cutting column reduces deflection.

This bit is suited for production machining environments, CNC drilling operations, and manual drill press work involving cast iron and steel workpieces. The stub length and 3xD flute-to-diameter ratio make it a practical choice for tight-fixture setups and gang-drilling applications. The parabolic flute profile clears chips efficiently in short-hole drilling cycles. Maximum recommended drilling depth is 0.5870 inches, which aligns with the stub-length design intent. Licensed machinists, toolroom technicians, and production floor operators are the primary installers of this product.

Key Features

• 0.1339-inch diameter with a tolerance of +0.000 to -0.018 mm for consistent hole sizing
• 130-degree point angle reduces thrust and improves centering on hard materials
• Parabolic flute profile with web thinning promotes fast chip evacuation and lower feed force
• Powdered metal (PMASP60 grade) construction provides higher wear resistance than standard HSS
• Stub length (DIN 1897) minimizes deflection in screw machine and short-reach applications
• Right-hand cut, straight-cylindrical shank fits standard chucks and quick-change tooling

Compatibility

Designed as a DIN 1897 stub-length replacement drill bit compatible with standard straight-shank drill chucks and screw machine setups. Primary workpiece materials are cast iron and steel.

Installation Notes

Install in a properly sized drill chuck or collet holder, ensuring the shank is fully seated before tightening. Power down the machine and lock out energy sources before changing tooling per applicable machine safety procedures. Use appropriate cutting fluid or coolant for steel applications to extend tool life, noting this bit does not support through-coolant delivery. Verify spindle speed and feed rate are appropriate for the workpiece material and hole diameter before beginning the cut.