Osg HP245-3189 Solid Carbide Jobber Drill 8.10 Mm

Product Description

The OSG HP245-3189 is a solid carbide jobber-length drill bit designed for high-performance drilling in ferrous materials. It features an 8.10 mm diameter, a 140-degree R-thinned point for self-centering entry, and a WD1 coating to extend tool life under demanding cutting conditions. With an overall length of 103.00 mm and a 61.00 mm flute length, this drill delivers a 5xD flute-to-diameter ratio suited for productive material removal. The straight-cylindrical shank measures 10.00 mm in diameter, providing consistent grip in standard collet chucks or drill holders. Machinists and tool-and-die professionals specify this drill where accuracy and surface finish in steel and cast iron are critical.

This drill is engineered for use on steel, alloy steel, and cast iron workpieces in CNC machining centers, drill presses, and manual machine setups. Its R-thinned point geometry reduces thrust forces and improves self-centering, making it suitable for blind hole, cross hole, through-hole, and general drilling applications. The tapered web configuration and regular spiral flute promote efficient chip evacuation in both through-coolant-free and standard machining environments. It fits production environments where repeatable hole geometry and tight diameter tolerance are required.

Key Features

• 140-degree R-thinned point for self-centering entry and reduced thrust
• WD1 coating provides wear resistance on steel and cast iron workpieces
• Solid carbide construction delivers rigidity and heat resistance beyond HSS tooling
• 5xD flute-to-diameter ratio supports efficient chip removal at depth
• Diameter tolerance of +0.006 to +0.021 mm for consistent, accurate hole size
• Straight-cylindrical 10.00 mm shank fits standard collet and drill chuck toolholders

Compatibility

Designed for drilling steel, alloy steel, and cast iron; classified under OSG Series HP245 with primary workpiece material codes P and K per ISO material classification.

Installation Notes

Installation and use of carbide drill bits should be performed by qualified machinists familiar with speeds, feeds, and toolholding requirements for solid carbide tooling. Secure the shank fully in a properly sized collet or drill chuck before operation, and verify runout is within acceptable limits to prevent premature breakage. Solid carbide is brittle — avoid side loads, interrupted cuts without appropriate parameters, or dropping the tool on hard surfaces. Consult the machine tool manufacturer and OSG cutting data recommendations for appropriate spindle speed and feed rate for the target workpiece material.