Osg 653015312 Taper Length Drill Bit 3.9 Mm Carbide

Product Description

The OSG 653015312 is a solid carbide taper length drill bit engineered for precision drilling in demanding industrial and machining applications. Built to Series 6530 standards, it features a 140-degree split point geometry combined with OSG EgiAs coating for extended tool life and reduced heat buildup at the cutting edge. The straight cylindrical shank measures 4.00 mm in diameter, making it compatible with standard drill chucks and collet systems. At 3.9 mm in diameter with a 50 mm flute length and 100 mm overall length, this bit is suited for deep-hole drilling cycles where rigidity and chip evacuation are critical. Coolant-through capability supports high-speed machining operations. Right-hand spiral flutes with X-thinned web geometry improve penetration and reduce thrust load.

This drill bit is intended for use in CNC machining centers, manual drill presses, and production drilling environments where tight tolerances and consistent hole quality are required. The 10xD flute-to-diameter ratio makes it particularly effective in applications requiring extended reach into workpieces. Machinists, tool-and-die professionals, and precision fabrication shops working with steel, aluminum, cast iron, and similar materials will find this bit appropriate for high-cycle production runs. It ships in single-piece packaging, suitable for individual tooling replenishment or small-batch procurement.

Key Features

• Solid carbide construction for superior hardness and wear resistance compared to HSS alternatives
• EgiAs coating reduces friction and extends cutting tool life in ferrous and non-ferrous materials
• 140-degree split point angle improves self-centering and reduces walking on entry
• X-thinned web geometry lowers thrust requirements and improves chip flow
• Coolant-through design supports high-speed and deep-hole drilling cycles
• Right-hand spiral flute with straight cylindrical shank fits standard toolholding systems

Compatibility

Designed as an OEM-style replacement or direct-fit tooling option for CNC machining centers and drill press setups requiring a 4.00 mm straight cylindrical shank and 3.9 mm cutting diameter in the Series 6530 configuration.

Installation Notes

Installation should be performed by a qualified machinist or tooling professional familiar with proper chuck or collet torque procedures. Ensure the machine spindle is fully stopped and the tool is secured to the correct runout specification before operation. Verify coolant-through passages are clear and coolant pressure is set appropriately for the material and feed rate being used. Consult the machine manufacturer and applicable workplace safety standards before beginning any tooling changeover.