Guhring 9005150031700 Stub Drill Bit 1/8 Inch 130 Degree Pm

Product Description

The GUHRING 9005150031700 is a stub-length screw machine drill bit designed for high-precision drilling in ferrous materials. Built from PM-ASP-60 powdered metal, this Series 515 bit delivers consistent performance in cast iron and steel. The 130-degree split point reduces walking and lowers thrust force at entry. A parabolic flute geometry promotes chip evacuation in short, controlled cuts. At 1.9291 inches overall length and a 0.1250-inch diameter, this bit fits compact drill chucks and screw machine setups where a standard-length bit would be impractical. Right-hand cut with a straight-cylindrical shank for direct chuck mounting.

Suited for production drilling, CNC screw machine work, and bench drill press applications where a short, rigid bit is needed for accuracy in cast iron and steel workpieces. The stub length and 3xD flute-to-diameter ratio limit deflection in interrupted cuts and thin-wall sections. Maximum drilling depth is 0.5220 inches, making this bit appropriate for shallow through-holes and spotting operations. Manufactured to DIN 1897 specification, it is a standard choice for machinists and toolroom technicians working to metric or imperial tolerances.

Key Features

• PM-ASP-60 powdered metal construction for wear resistance in ferrous materials
• 130-degree standard point angle reduces drill walk and entry thrust
• Parabolic flute geometry promotes chip evacuation in stub-depth holes
• Web-thinned parallel web for reduced cutting force at the chisel edge
• Straight-cylindrical shank fits standard drill chucks without adapters
• Manufactured to DIN 1897 specification for dimensional consistency

Compatibility

Designed as an OEM-style stub-length drill bit compatible with standard drill chucks accepting a 0.1250-inch straight-cylindrical shank. Primary workpiece materials are cast iron and steel per manufacturer specification.

Installation Notes

Installation and use should be performed by machinists or toolroom technicians familiar with cutting tool selection and machine operation. Secure the shank fully in the chuck and verify runout before drilling. Always confirm spindle speed and feed rate are appropriate for the workpiece material and bit diameter before engaging the cut. Do not exceed the rated maximum drilling depth of 0.5220 inches per pass without retracting to clear chips.