Osg 300-1540 Chucking Reamer Wire 23 0.1540 in Solid Carbide

Product Description

The OSG 300-1540 is a solid carbide chucking reamer designed for precision hole finishing in general machining applications. It cuts a nominal diameter of 0.1540 inches (Wire Size 23) with a tolerance of +0.0001 to +0.0004 inches, making it suitable for close-tolerance bore work. The reamer features a straight flute configuration, a straight cylindrical shank for chuck mounting, and a right-hand cutting direction. Overall length is 2.5 inches with a flute length of 0.75 inches and four flutes. The bright uncoated solid carbide construction provides rigidity and wear resistance across a range of workpiece materials. Licensed machinists and tool-and-die technicians are the typical installers.

The 300-1540 fits standard general machining environments where precise hole sizing is required after drilling. Its compact 2.5-inch overall length suits small CNC machining centers, manual mills, and drill presses equipped with a standard chuck. The straight flute geometry is well-suited for reaming short, through holes in ferrous and non-ferrous materials. This reamer is part of the OSG 300D series, which targets standard carbide reaming in production and maintenance machining contexts.

Key Features

• Solid carbide construction for rigidity and extended tool life in general machining
• Wire Size 23 diameter of 0.1540 inches with a tight tolerance of +0.0001 to +0.0004 inches
• Straight flute geometry suited for short through-hole reaming in a variety of materials
• Bright uncoated finish — no coating to interfere with dimensional tolerance or chip flow
• Four-flute design for consistent surface finish and stable cutting action
• Straight cylindrical shank for direct chuck mounting without an adapter

Compatibility

Designed as an OEM-style replacement chucking reamer for general machining applications requiring a Wire Size 23 straight-flute solid carbide tool in standard chuck-held setups.

Installation Notes

Installation is performed by qualified machinists. Secure the straight shank firmly in a precision drill chuck or collet before use, and verify runout with an indicator before cutting. Power down the machine spindle completely before loading or removing the reamer. Follow shop-standard feeds and speeds for solid carbide reamers and apply appropriate cutting fluid to extend tool life and maintain dimensional accuracy.