Osg 3300145 Micro Drill Bit 1.45mm Solid Carbide Tialn

Product Description

The OSG 3300145 is a solid carbide micro drill bit engineered for precision drilling in small-diameter applications. Sized at 1.45 mm (0.0571 inches) in diameter, it features a 140-degree split point and a TiAlN (titanium aluminum nitride) coating that increases surface hardness and heat resistance during high-speed cutting operations. The overall length is 42 mm with a 3 mm shank diameter, keeping the tool rigid and minimizing runout in close-tolerance work. Right-hand cut geometry produces clean chip evacuation in standard CNC and manual spindle setups. Machinists, toolmakers, and precision fabricators working in electronics, aerospace, and medical component production will find this bit suited for repeatable, tight-tolerance hole work in ferrous and non-ferrous materials.

The OSG 3300145 belongs to the Series 5330 micro drill line, designed for applications where standard jobber-length bits are too large or too flexible. Typical use cases include PCB drilling, instrument component machining, mold and die work, and any operation requiring sub-2 mm hole diameters with consistent wall quality. The 9 mm flute length accommodates shallow to moderate drilling depths appropriate for the diameter class. Coolant-through capability is not included, so external coolant or mist lubrication is recommended for harder workpiece materials.

Key Features

• 1.45 mm (0.0571 inch) diameter for micro and precision drilling applications
• 140-degree point angle reduces thrust force and improves centering accuracy
• TiAlN coating extends tool life in dry and semi-dry cutting conditions
• Solid carbide construction provides rigidity at small diameters where HSS deflects
• 3 mm shank diameter compatible with standard collet and chuck systems
• Right-hand cut, Series 5330 geometry for clean chip flow in CNC operations

Compatibility

Designed as an OEM-style replacement and production-use micro drill bit for CNC machining centers, drill presses, and manual spindles accepting a 3 mm shank diameter.

Installation Notes

Secure the 3 mm shank in a precision collet or chuck rated for micro tooling to minimize runout before operation. Power down the spindle completely before changing or inspecting the bit. At this diameter class, feed rate and spindle speed must be dialed in to the workpiece material to avoid bit fracture — consult OSG Series 5330 cutting data recommendations. External coolant or mist lubrication is advised when drilling hardened or abrasive materials since this bit does not have coolant-through capability.