Guhring 9065090138900 Extra Length Carbide Drill Bit

Product Description

The GUHRING 9065090138900 is a solid carbide extra length drill bit designed for high-performance drilling in demanding metalworking applications. It measures 0.5469 inches in diameter with a 135-degree cone relief point and carries a TiAlN tip coating for extended tool life in abrasive and high-temperature cutting conditions. The flute length is 248 millimeters and the overall length is 297 millimeters, giving it the reach required for deep-hole drilling operations. With a 15xD flute-to-diameter ratio and web-thinned geometry, this bit is built for precision entry and efficient chip evacuation in production environments. Installation and use are intended for qualified machinists and tooling professionals.

This drill bit is suited for drilling alloy steel, stainless steel, and nickel alloy workpieces in both shop and production floor settings. The straight-cylindrical shank with h7 diameter tolerance ensures secure, repeatable seating in standard drill chucks and toolholders. Coolant-through capability makes it well matched to CNC machining centers and other machine tools where through-spindle coolant is available. The extra length design addresses deep-hole and extended-reach applications where standard-length drills cannot reach the required depth.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard metals
• TiAlN tip coating reduces heat buildup and extends cutting life in stainless steel and nickel alloys
• 135-degree cone relief point with web thinning for clean entry and reduced thrust force
• Coolant-through design compatible with through-spindle coolant delivery
• 15xD flute-to-diameter ratio for deep-hole reach applications
• Right-hand spiral flute with regular helix for efficient chip removal

Compatibility

Designed for use in CNC machining centers and drill presses equipped with toolholders accepting a 14-millimeter straight-cylindrical shank; rated for alloy steel, stainless steel, and nickel alloy workpiece materials as specified by the manufacturer.

Installation Notes

This drill bit should be installed and operated by qualified machinists familiar with carbide tooling requirements. Confirm spindle speed, feed rate, and coolant flow settings are appropriate for the workpiece material before beginning a cut. Carbide tooling is brittle — avoid side loading, interrupted cuts without proper setup, and hand-feeding on manual machines without adequate rigidity. Inspect the cutting edge and coating condition before each use; do not run a chipped or damaged carbide drill bit.