Osg 8623225 Extra Length Cobalt Drill Bit 0.0984 in

Product Description

The OSG 8623225 is a cobalt extra-length drill bit designed for drilling through hard and abrasive materials where standard-length bits fall short. Measuring 2.50 mm (0.0984 inches) in diameter with an overall length of 100 mm (3.937 inches), it reaches into deep holes and recessed features that shorter bits cannot access. The 120-degree split point reduces walking at entry and lowers the thrust required to start the cut. A WXL finish improves lubricity and wear resistance, extending tool life in ferrous and stainless steel applications. Machinists, tool-and-die shops, and maintenance technicians specify this bit when depth-to-diameter ratios exceed what jobber-length tooling can handle.

This bit is suited for CNC machining centers, drill presses, and hand-held power tools requiring a straight-cylindrical shank. It performs in ferrous metals including carbon steel, alloy steel, stainless steel, and cast iron. The extra-length geometry, with a 20xD flute-by-diameter ratio, makes it practical for aerospace components, mold work, fixture plates, and any application requiring reach beyond standard drill bit lengths. The right-hand spiral and R-thinned web reduce chip packing in deep-hole operations.

Key Features

• Cobalt construction provides heat resistance and hardness for drilling ferrous and stainless materials
• WXL coating reduces friction and improves wear life compared to uncoated cobalt
• 120-degree proprietary point reduces drill walk and lowers entry thrust
• R-thinned web improves chip evacuation and reduces axial cutting force
• 20xD flute-to-diameter ratio delivers reach for deep-hole applications
• Straight-cylindrical shank fits standard drill chucks and collets without adapters

Compatibility

Designed as a standard straight-shank extra-length drill bit compatible with drill chucks and collet systems accepting a 3.00 mm shank diameter.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance technicians familiar with cutting tool safety. Secure the shank fully in the chuck or collet before operation and verify runout is within acceptable limits for the application. Use appropriate cutting fluid or coolant to manage heat, particularly in stainless and alloy steels, as this bit does not support through-coolant delivery. Inspect the cutting edges before each use and replace if chipping or wear is observed.