Guhring 9006050085000 Cobalt Jobber Drill 8.50mm

Product Description

The GUHRING 9006050085000 is a cobalt (M35 grade) jobber-length drill bit designed for high-performance drilling in difficult-to-machine materials. It features a 130-degree split point with web thinning for self-centering entry and reduced thrust, and a bright/uncoated finish suited for applications where coating buildup is a concern. The 8.50 mm diameter straight-cylindrical shank drill runs right-hand cutting with a regular spiral flute pattern. With an overall length of 117.00 mm and a flute length of 75.00 mm, it conforms to DIN 338 standards. Licensed HVAC, mechanical, or industrial trades installing this bit into CNC or handheld setups will find the M35 cobalt construction holds an edge under the heat generated by tough alloy workpieces.

This drill bit is intended for use in titanium alloy and other high-strength materials classified under primary workpiece material codes M and S. The Series 605 design with a 5xD flute-to-diameter ratio and tapered web configuration makes it a fit for production drilling environments where consistent hole tolerance is required. The diameter tolerance of +0.000 to -0.022 mm supports close-tolerance hole requirements. It is sold individually and suited for use in machine shops, maintenance facilities, and field fabrication applications where high-alloy material drilling is routine.

Key Features

• M35 cobalt construction retains hardness and edge life when drilling titanium alloy and stainless-grade materials
• 130-degree split point with web thinning enables self-centering without a center punch on most setups
• Bright/uncoated finish eliminates coating delamination concerns in abrasive or interrupted-cut applications
• DIN 338 standard jobber length provides compatibility with standard drill chucks and collet holders
• Tapered web and regular spiral flute support efficient chip evacuation at standard drilling speeds
• Straight-cylindrical shank fits 3-jaw drill chucks and ER collet systems without adapters

Compatibility

Designed as a DIN 338-compliant jobber drill for use with standard drill chucks and collet holders accepting an 8.50 mm straight-cylindrical shank. Rated for primary workpiece materials titanium alloy and other high-strength alloys under ISO material codes M and S.

Installation Notes

Installation is performed by machinists or tooling technicians in CNC, manual drill press, or handheld power-tool setups. Ensure the drill chuck or collet is fully seated and tightened before operation. Cutting speeds and feed rates should be selected based on workpiece material hardness and machine rigidity. Do not exceed the maximum drilling depth of 62.25 mm without retracting to clear chips.