Guhring 9005150067000 Screw Machine Drill Bit 0.2638in

Product Description

The GUHRING 9005150067000 is a stub-length (screw machine length) twist drill bit built for high-cycle production and maintenance drilling in cast iron and steel. Ground from powdered metal (PMASP60 grade) with a parabolic flute geometry and a web-thinned tip, this bit clears chips aggressively and reduces thrust force at entry. The 130-degree split point starts on contact without a center punch. At 0.2638 inches in diameter with a straight-cylindrical shank of the same diameter, it seats directly into standard drill chucks and collets. Overall length is 2.7559 inches. Machinists, tool room techs, and maintenance mechanics reach for this geometry when cycle time and hole quality both matter.

This drill bit is suited for production runs and repetitive drilling operations in cast iron and steel workpieces in both shop and field environments. The parabolic flute profile with a 3xD flute-to-diameter ratio improves chip evacuation in short, blind, and through-hole applications. The stub body keeps deflection low in tight setups where a jobber-length bit would flex. Coolant-through is not supported, so chip evacuation relies on retract cycles or flood coolant applied externally.

Key Features

• Powdered metal construction (PMASP60 grade) for extended tool life in ferrous materials
• 130-degree point angle with web thinning reduces entry thrust and self-centers on contact
• Parabolic flute geometry with parallel web configuration promotes fast chip evacuation
• Stub length body (2.7559 inches overall) minimizes deflection in close-clearance setups
• Right-hand cut, straight-cylindrical shank fits standard drill chucks and ER collets without modification
• Conforms to DIN 1897 specification for consistent interchangeability with other DIN-standard tooling

Compatibility

Designed as an OEM-specification stub drill conforming to DIN 1897 for use in any standard drill chuck or collet accepting a 0.2638-inch straight shank. Primary workpiece materials are cast iron and steel as stated by the manufacturer.

Installation Notes

This bit is installed and changed by machinists or maintenance technicians operating drill presses, CNC machining centers, or hand-held power drills. Power down and de-energize the machine spindle before changing tooling. Seat the shank fully into the chuck or collet and confirm runout before beginning a production cycle. Do not exceed the maximum drilling depth of 0.825 inches per pass without a retract cycle to clear chips, as coolant-through is not available on this bit.