Osg 300-0315 Chucking Reamer 0.8mm Solid Carbide

Product Description

The OSG 300-0315 is a solid carbide chucking reamer designed for precision hole finishing in general machining applications. With a reamer diameter of 0.8 mm (0.0315 inches) and a diameter tolerance of +0.0001 to +0.0004 inches, this tool delivers consistent, tight-tolerance bores in a single pass. The straight flute geometry and right-hand cutting direction make it well-suited for through-hole and blind-hole reaming in a wide range of workpiece materials. It ships uncoated (bright finish), which keeps regrinding straightforward. The overall length is 38 mm with a 10 mm flute length, and the straight cylindrical shank mounts directly in a standard collet or drill chuck. Tool material is solid carbide throughout, providing rigidity at this small diameter.

This reamer is intended for use in CNC machining centers, manual mills, drill presses, and precision lathes where accurate bore sizing is required. It falls within the OSG 300D series, positioned for general machining work across job shops, production facilities, and toolrooms. The 0.8 mm diameter makes it appropriate for small-bore finishing operations common in medical device manufacturing, electronics, instrumentation, and precision mechanical assemblies. Installation is performed by machinists or toolroom technicians working with micro-diameter cutting tools.

Key Features

• Solid carbide construction provides rigidity and wear resistance at 0.8 mm diameter
• Diameter tolerance of +0.0001 to +0.0004 inches for tight, repeatable bore sizing
• Straight flute design with right-hand cut suitable for general through-hole and blind-hole reaming
• Bright uncoated finish facilitates easy regrinding and visual inspection
• Straight cylindrical shank fits standard collets and drill chucks without adapters
• No coolant-through requirement simplifies setup in standard machining environments

Compatibility

Designed as an OEM-style replacement chucking reamer for general machining applications requiring a 0.8 mm finished bore diameter in CNC or manual machine tool setups.

Installation Notes

This tool is installed and operated by machinists and toolroom professionals familiar with small-diameter carbide tooling. Always secure the straight shank in a properly sized, clean collet or drill chuck before operation, and verify runout with a dial indicator when tolerances are critical. Carbide is brittle at this diameter — avoid side loading, interrupted cuts, or using the reamer to remove more stock than the tool specification allows. Follow the machine tool manufacturer guidelines for spindle speed and feed rate for micro-diameter carbide reamers.