Osg 653031212 Taper Length Drill 0.3125 in Solid Carbide

Product Description

The OSG 653031212 is a solid carbide taper length drill bit designed for precision hole-making in demanding industrial and machining applications. Built to Series 6530 specifications, it features a 140-degree drill point angle optimized for penetrating hard and abrasive materials with reduced thrust force. The EgiAs finish improves surface hardness and heat resistance, extending tool life in high-cycle production environments. The drill includes an X-Thinned web for improved chip evacuation and reduced cutting resistance. At 0.3125 inches in diameter with a 10xD flute-to-diameter ratio, it supports through-coolant delivery to maintain cutting edge temperature during deep-hole operations.

This drill is suited for CNC machining centers, drill presses, and manual milling setups where taper length reach and chip clearance are required. The straight-cylindrical shank and 5/16-inch shank diameter allow direct mounting in standard collets and drill chucks. It is intended for use by machinists and tool-and-die professionals working in aerospace, automotive, die-and-mold, and general precision manufacturing environments where consistent hole quality and tight tolerances are required.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• 140-degree drill point angle reduces thrust and improves centering on entry
• EgiAs finish provides enhanced heat resistance and extended tool life
• Through-coolant capable for deep-hole drilling and extended run cycles
• X-Thinned web promotes efficient chip evacuation and lower cutting forces
• 10xD flute-to-diameter ratio delivers taper length reach beyond standard jobber drills

Compatibility

Designed as an OSG Series 6530 taper length drill for use in standard straight-shank collets and drill chucks accepting a 5/16-inch shank diameter.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the spindle fully stopped and the machine in a locked-out state per applicable safety procedures. Ensure the collet or chuck is clean and the shank is fully seated before tightening. Through-coolant supply lines should be verified for proper pressure and flow before initiating deep-hole cycles. Do not exceed the recommended feed and speed parameters for the workpiece material to avoid premature tool failure.