Osg HP245-2874 Solid Carbide Jobber Drill 7.30 Mm

Product Description

The OSG HP245-2874 is a solid carbide jobber-length drill bit designed for high-performance drilling in ferrous materials. It features a 7.30 mm diameter (0.2874 inch decimal equivalent), a 140-degree R-thinned point, and a WD1 coating that supports tool life in demanding cut conditions. The straight-cylindrical shank measures 8.00 mm and fits standard drill chucks and tool holders. With a 5xD flute-to-diameter ratio and regular spiral fluting, this bit maintains chip evacuation and hole geometry in production drilling environments. It is installed and operated by machinists, tool-and-die technicians, and skilled tradespeople working on CNC and manual drilling equipment.

The HP245-2874 is suited for drilling blind holes, cross holes, and self-centering applications in steel, alloy steel, and cast iron workpieces. Its R-thinned point reduces thrust force at entry, making it effective in both interrupted-cut and through-material scenarios. The 53.00 mm flute length supports chip clearance in moderately deep holes, and the right-hand cutting direction is compatible with standard spindle rotation on CNC machining centers, drill presses, and hand-held power tools with appropriate fixturing.

Key Features

• Solid carbide construction for rigidity and wear resistance in ferrous materials
• WD1 coating for extended tool life under high-speed cutting conditions
• 140-degree R-thinned point reduces entry thrust and improves self-centering
• Tapered web configuration paired with regular spiral flutes for efficient chip evacuation
• 5xD flute-to-diameter ratio supports blind hole and cross hole drilling
• Straight-cylindrical shank compatible with standard chucks and collet holders

Compatibility

Designed for use in steel (P-code), alloy steel (P-code), and cast iron (K-code) workpieces per ISO material classification. Suitable for blind hole, cross hole, and self-centering drilling operations on CNC machining centers and conventional drill presses.

Installation Notes

Installation and operation should be performed by qualified machinists or trade professionals familiar with cutting tool safety. Secure the shank fully in a drill chuck or collet holder before operation and verify spindle speed and feed rate against the tool manufacturer's recommendations for the workpiece material. Do not exceed the rated cutting parameters for solid carbide tooling, as carbide is brittle and sensitive to side-loading or interrupted cuts without proper setup. This tool does not support coolant-through delivery; external coolant or cutting fluid application is recommended for best results.