Osg 300-1495 Chucking Reamer Wire Size 25 Solid Carbide

Product Description

The OSG 300-1495 is a solid carbide chucking reamer designed for precision hole finishing in general machining applications. It produces a reamed diameter of 0.1495 inches, corresponding to wire gauge size 25, with a close tolerance of +0.0001 to +0.0004 inches. The reamer features a straight flute geometry and a straight cylindrical shank, making it compatible with standard drill chucks and collet holders. Four cutting flutes deliver smooth material removal on the right-hand cut. Solid carbide construction provides rigidity and wear resistance suited to tight-tolerance work in ferrous and non-ferrous materials. The tool ships in a bright, uncoated finish without coolant-through capability.

This reamer is intended for production and job-shop machining environments where close hole tolerances are required. It is suited to CNC machining centers, knee mills, and drill presses equipped with precision chucking systems. Typical applications include finishing pre-drilled or bored holes to wire gauge size 25 in general metalworking, toolroom, and light manufacturing operations. The compact 2.5-inch overall length and 0.75-inch flute length make it well suited to shallow-hole reaming in confined workpiece geometries.

Key Features

• Reamed diameter of 0.1495 inches, wire gauge size 25, with a tolerance of +0.0001 to +0.0004 inches
• Solid carbide construction for rigidity and extended tool life in demanding materials
• Straight flute, right-hand cut geometry for consistent chip control in through and blind holes
• Four flutes provide improved surface finish and bore roundness
• Straight cylindrical shank compatible with standard drill chucks and collet systems
• Bright, uncoated finish suitable for general machining without specialized coolant requirements

Compatibility

Designed as a general-purpose chucking reamer for use in standard drill chucks and collet holders on CNC machining centers, knee mills, and drill presses. No specific machine model compatibility data was provided by the manufacturer for this part number.

Installation Notes

Installation and use should be performed by qualified machinists familiar with precision reaming procedures. Secure the straight shank firmly in a precision drill chuck or collet holder and verify runout before reaming. Always pre-drill or bore the hole to the appropriate undersize before using the reamer to achieve the specified tolerance. Maintain recommended spindle speeds and feed rates for carbide tooling in the workpiece material to avoid tool breakage or bore oversize.