Guhring 9055200029500 Stub Cobalt Drill Bit Size 32

Product Description

The GUHRING 9055200029500 is a stub-length (screw machine length) cobalt drill bit designed for demanding metal-cutting applications. Built to DIN 1897 standards, it carries a TiN coating and a 4-facet, 118-degree point with web thinning for improved chip evacuation and reduced thrust. The straight cylindrical shank measures 2.95 mm (0.1161 inches) in diameter, and the overall length is 46.00 mm (1.811 inches). This drill is intended for use by machinists, tool-and-die tradespeople, and maintenance technicians who need a rigid, short-body drill for high-accuracy hole starting in tough materials.

This bit is suited for drilling steel, stainless steel, cast iron, aluminum, and other non-ferrous metals in screw machine, CNC, and manual lathe or mill setups. The short flute-to-diameter ratio (3xD flute length relative to diameter) and stub body length minimize deflection in deep-reach setups and turret applications. The 2-flute right-hand spiral design provides efficient chip clearing in through-hole and blind-hole drilling at standard machine speeds.

Key Features

• Cobalt tool material for elevated heat resistance and hardness retention in steel and stainless steel
• TiN coating reduces friction and extends cutting edge life
• 4-facet point with web thinning lowers entry thrust and improves self-centering
• Stub body length (46.00 mm overall) increases rigidity and reduces runout
• Built to DIN 1897 specification for consistent dimensional tolerances
• Diameter tolerance held to +0.000 to -0.014 mm for precise hole sizing

Compatibility

Designed as a DIN 1897 stub-length replacement drill bit for use in standard straight-shank drill chucks and collets accepting a 2.95 mm shank. Suitable for screw machines, CNC machining centers, drill presses, and manual mills cutting steel, stainless steel, cast iron, aluminum, and non-ferrous materials.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or trade professionals familiar with cutting tool setup and machine operation. Secure the straight shank in a properly sized collet or drill chuck and verify runout before cutting. Always follow machine manufacturer guidelines for speed and feed rates appropriate to the workpiece material and drill diameter. Inspect the cutting edges and TiN coating for wear before each use and replace the bit if chipping or coating loss is observed.