Osg HP255-3543 Carbide Jobber Drill Bit 9mm 140deg WD1

Product Description

The OSG HP255-3543 is a solid carbide jobber length drill bit designed for high-performance drilling in ferrous and hard materials. Built on the HP255 Series platform, it features a 9 mm diameter, a 140-degree R-thinned point, and a WD1 coating that extends tool life in demanding production environments. The straight-cylindrical shank measures 10 mm in diameter, and the overall length is 103 mm with a 61 mm flute length. The regular spiral flute geometry promotes efficient chip evacuation during through and blind hole drilling. This bit is suited for CNC machining centers, drill presses, and manual setups where consistent hole quality is required.

The HP255-3543 is engineered for drilling steel, alloy steel, and cast iron. It handles a range of operations including blind hole drilling, cross hole drilling, and self-centering applications. Coolant-through capability makes it compatible with machine tool setups that deliver internal coolant, helping to control heat and extend run time in continuous production cycles. The 5xD flute-to-diameter ratio supports deeper hole applications within the jobber length class.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard material drilling
• WD1 coating for improved surface hardness and reduced friction at the cutting edge
• 140-degree R-thinned point reduces thrust force and improves self-centering entry
• Coolant-through design compatible with internal coolant delivery systems
• Regular spiral flute with tapered web configuration for stable chip flow
• Right-hand cut with two flutes; suitable for blind hole, cross hole, and standard drilling operations

Compatibility

Designed as a high-performance replacement drill bit for applications involving steel, alloy steel, and cast iron workpieces within the 9.00 mm to 10.00 mm drill bit size range, using machine tool setups that accept a 10 mm straight-cylindrical shank.

Installation Notes

Installation and use of this tool is performed by machinists or CNC operators. Secure the shank fully in the tool holder or chuck before operation and verify runout is within acceptable limits before beginning a cut. Power down and de-energize the machine spindle completely before changing or inspecting the bit. Follow machine tool manufacturer guidelines for feed rate and spindle speed when drilling carbide tooling into hardened or cast materials.