Osg 654028012 Extra Length Drill Bit 0.2813 in Carbide

Product Description

The OSG 654028012 is a solid carbide extra length drill bit engineered for deep-hole drilling applications that demand precision and rigidity. It features a 140-degree split point with X-thinned web geometry, which reduces thrust force and improves centering on entry without a pilot hole. The EgiAs finish enhances surface hardness and lubricity for extended tool life in ferrous and non-ferrous materials. Coolant-through capability delivers cutting fluid directly to the cutting edge, making this bit well suited for CNC machining centers and drilling stations where heat management is critical. Machinists and tooling specialists are the primary installers and users of this bit.

This drill bit belongs to OSG Series 6540 and is designed for deep-bore operations where standard-length bits cannot reach. With a flute-to-diameter ratio of 20xD and a 170 mm flute length, it handles deep features in molds, dies, fixtures, aerospace components, and precision mechanical assemblies. The straight cylindrical shank at 5/16 inch diameter allows direct chucking in standard drill chucks and collets without adapter sleeves in most CNC and manual setups.

Key Features

• Solid carbide construction provides rigidity and wear resistance in demanding materials
• 140-degree split point with X-thinned web reduces walking and entry thrust
• EgiAs coating improves surface lubricity and extends tool life
• Coolant-through design channels fluid directly to the cutting zone for heat control
• 20xD flute-to-diameter ratio enables deep-hole drilling in a single tool
• Right-hand cutting, 2-flute configuration for efficient chip evacuation

Compatibility

Designed as an OEM-style tooling solution for CNC machining centers and drilling stations accepting a straight cylindrical shank with a 5/16 inch shank diameter.

Installation Notes

This tool is installed by machinists and CNC tooling technicians. Ensure the spindle and collet or chuck are fully de-energized and at a complete stop before changing tooling. Verify runout and chuck grip on the 5/16 inch shank before initiating a drilling cycle. Follow machine manufacturer and facility safety guidelines for feeds, speeds, and coolant pressure when using coolant-through tooling.