Guhring 9006520028500 Jobber Drill Bit 2.85mm Hss Tin

Product Description

The GUHRING 9006520028500 is a jobber-length twist drill bit designed for precision hole-making in a range of materials. Built from high-speed steel (HSS) with a titanium nitride (TiN) coating, this bit offers improved wear resistance and extended tool life compared to uncoated HSS. The 130-degree split point reduces walking on entry and minimizes the need for a center punch. A parabolic flute geometry improves chip evacuation, especially in deeper holes. At 2.85 mm in diameter and 2-13/32 inches overall length, this bit suits benchtop drill presses, CNC drilling operations, and handheld power tools used in machine shops, fabrication, and light manufacturing environments.

This drill bit is rated for primary use in aluminum and non-ferrous materials, as indicated by workpiece material codes K, N, and P. The parabolic flute with a 5xD flute-to-diameter ratio supports efficient chip clearing in through-hole and blind-hole applications. Web thinning at the point reduces thrust requirements, making it well suited for production drilling where feed rates and cycle times matter. It meets DIN 338 standards, which govern jobber-length drill geometry and tolerances. The straight-cylindrical shank is compatible with standard drill chucks across most drill press and CNC spindle configurations.

Key Features

• 2.85 mm diameter with 0.1122 decimal inch equivalent and a diameter tolerance of -0.014 to 0.000 mm
• TiN coating increases surface hardness and reduces friction for longer tool life in production runs
• 130-degree point angle with web thinning reduces entry thrust and improves centering accuracy
• Parabolic flute design with tapered web geometry promotes fast, clean chip evacuation
• Right-hand cut, 2-flute configuration suitable for standard CNC and manual drilling setups
• Conforms to DIN 338 specification for jobber-length drills

Compatibility

Designed as a DIN 338 jobber-length drill bit compatible with standard straight-shank drill chucks. Primary workpiece materials are aluminum and non-ferrous metals per material codes K, N, and P. Part of the Guhring Series 652 high-performance drill line.

Installation Notes

This bit is installed by machinists and tool-and-die professionals in drill press, hand drill, or CNC spindle applications. Ensure the drill chuck is fully tightened and the workpiece is securely clamped before operation. For optimal performance and bit longevity, use appropriate cutting fluid or coolant when drilling metals, even though this bit does not feature internal coolant-through capability. Inspect the cutting edge and TiN coating condition regularly, and replace the bit when the coating shows significant wear or the point geometry deteriorates.