Guhring 9005150082000 Stub Drill Bit 0.3228 in Powdered Metal

Product Description

The GUHRING 9005150082000 is a screw machine length (stub) drill bit designed for high-productivity hole-making in ferrous materials. Built from powdered metal (PM) with a coated finish, it delivers extended tool life compared to standard HSS bits in demanding applications. The parabolic flute geometry promotes efficient chip evacuation, while the web-thinned, parallel-web construction reduces thrust and improves penetration. At 0.3228 inches (letter size P) in diameter with a 130-degree split point, this bit suits production drilling environments where consistent hole quality and tool durability are priorities. It carries a straight-cylindrical shank for standard chuck compatibility and conforms to DIN 1897 specification.

This drill bit is suited for production and job-shop environments where cast iron and steel are the primary workpiece materials. The stub length design — with an overall length of 3.1102 inches and a flute length of 1.4567 inches — provides added rigidity over jobber-length bits, making it a preferred choice for CNC machining centers, turret lathes, and screw machines where chatter and deflection must be minimized. The 3xD flute-by-diameter ratio supports maximum drilling depth up to 0.972 inches without coolant-through requirements.

Key Features

• Powdered metal (PMASP60 grade) construction with coated finish for extended wear resistance in steel and cast iron
• 130-degree drill point angle with web thinning reduces entry thrust and improves centering
• Parabolic flute profile enhances chip flow and reduces re-cutting in deep holes
• Stub length body increases rigidity and reduces deflection versus jobber-length alternatives
• Straight-cylindrical shank fits standard drill chucks and collets without adapters
• Conforms to DIN 1897 specification for consistent dimensional standards

Compatibility

Designed as an OEM-specification stub drill bit for use in standard straight-shank drill chucks, collet holders, and screw machine spindles compatible with a 0.3228-inch diameter shank. Primary workpiece materials are cast iron and steel per manufacturer specification.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or tool-and-die personnel familiar with cutting tool selection and machine setup. Ensure the spindle and chuck or collet are fully de-energized and at rest before inserting or removing the bit. Confirm chuck or collet runout is within acceptable tolerance before use, as excessive runout accelerates premature wear on a coated PM tool. Do not exceed the rated maximum drilling depth of 0.972 inches per the manufacturer specification.