Guhring 9006520081000 Jobber Drill Bit 8.1mm Hss Tin

Product Description

The GUHRING 9006520081000 is a jobber length twist drill bit built for high-performance drilling in a range of workpiece materials. It is manufactured from high speed steel with a titanium nitride (TiN) coating that extends cutting life and reduces heat buildup. The bit measures 8.1 mm (0.3189 inches) in diameter with a 130-degree point angle optimized for clean entry into aluminum and similar materials. Overall length is 4-19/32 inches, and the parabolic flute geometry promotes efficient chip evacuation. Web thinning at the tip reduces thrust force on entry. It is a standard tool in the kit of machinists, maintenance technicians, and fabricators working in production or job-shop environments.

This drill bit is designed primarily for use in aluminum and non-ferrous workpiece materials, consistent with the material codes K, N, and P designations. The parabolic flute and TiN coating also make it a capable choice for plastics and softer steels at appropriate feed and speed parameters. It fits standard drill chucks that accept a straight cylindrical shank of 0.3189 inches. Series 652 drill bits are suited to both CNC machining centers and manual drill press applications where consistent hole diameter tolerance is required. The 5xD flute-to-diameter ratio supports deeper drilling passes without repacking chips by hand.

Key Features

• TiN coating reduces friction and extends cutting tool life compared to uncoated HSS
• 130-degree point angle with web-thinned, tapered web for reduced entry thrust and improved centering
• Parabolic flute geometry accelerates chip evacuation in aluminum and non-ferrous materials
• Straight cylindrical shank at 0.3189 inches fits standard drill chucks without an adapter
• Manufactured to DIN 338 specification for consistent dimensional accuracy
• Diameter tolerance of -0.022 to 0.000 mm ensures controlled hole sizing

Compatibility

Designed as an OEM-specification jobber length drill bit conforming to DIN 338. Primary workpiece material designations are K (cast iron and non-ferrous), N (non-ferrous metals including aluminum), and P (steel and cast steel) as specified by the manufacturer. Fits any standard drill chuck or collet accepting a 0.3189-inch straight cylindrical shank.

Installation Notes

Installation and use should be performed by a qualified machinist or trained technician familiar with speeds, feeds, and cutting tool safety. Secure the shank fully in the chuck or collet before operation and verify runout before drilling production parts. Do not exceed the recommended maximum drilling depth of 2.47 inches without retracting to clear chips. Always wear appropriate eye protection and follow shop safety protocols when operating drilling equipment.