Osg HP245-0551 Solid Carbide Jobber Drill 1.40 Mm

Product Description

The OSG HP245-0551 is a solid carbide jobber-length drill bit designed for high-performance drilling in ferrous materials. It measures 1.40 mm in diameter with a 140-degree R-thinned point that promotes self-centering and reduces thrust on entry. The WD1 coating improves wear resistance and heat dissipation during cutting. Overall length is 38.00 mm with a 12.00 mm flute length and a 3.00 mm straight-cylindrical shank. The regular spiral, two-flute geometry produces clean chip evacuation in blind hole, cross hole, and through-hole applications. This bit is sized at 0.0551 decimal inch and holds a diameter tolerance of plus 0.002 to plus 0.012 mm.

The HP245-0551 is engineered for drilling steel, alloy steel, and cast iron in precision machining environments. Its 5xD flute-to-diameter ratio suits short to medium-depth holes where rigidity and accuracy are critical. The tapered web configuration and R-thinned point reduce walking on hardened and interrupted surfaces. Machinists and tool-and-die technicians working on CNC machining centers, drill presses, and manual mills will find this bit appropriate for production runs requiring consistent hole quality in P and K material groups.

Key Features

• 1.40 mm diameter with a held tolerance of plus 0.002 to plus 0.012 mm for repeatable hole sizing
• 140-degree R-thinned point for self-centering entry and reduced thrust load
• WD1 coating for improved wear resistance and thermal performance on ferrous materials
• Solid carbide construction provides rigidity at small diameters
• Regular spiral, two-flute design promotes efficient chip evacuation in blind and cross holes
• 3.00 mm straight-cylindrical shank fits standard collets and drill chucks

Compatibility

Designed for drilling steel, alloy steel, and cast iron. Suitable for use in CNC machining centers and manual drill presses with standard collet or chuck systems accepting a 3.00 mm straight-cylindrical shank. Part of the OSG HP245 series covering the 0.0500 to 0.1000 decimal inch diameter range.

Installation Notes

Installation and tool changes should be performed with the machine powered down and locked out per standard lockout/tagout procedures. Seat the shank fully and evenly in the collet or chuck before tightening to the tool holder specification. No coolant-through capability is present on this bit, so external coolant or cutting fluid application is recommended when drilling steel or cast iron at production feeds and speeds. Inspect the cutting edge and coating condition before each use; carbide is brittle and should not be dropped or struck against hard surfaces.