Osg 300-2656 Chucking Reamer 17/64 in Solid Carbide

Product Description

The OSG 300-2656 is a solid carbide chucking reamer designed for precision hole finishing in general machining applications. Built to OSG Series 300D standards, it produces a finished bore diameter of 0.2656 inches (17/64 inches) with a tight tolerance of +0.0001 to +0.0005 inches, making it suitable for close-tolerance fits and dowel hole preparation. The straight flute geometry and right-hand cutting direction suit it to stable, non-interrupted cuts in a range of workpiece materials. Machinists and toolroom technicians install this reamer in CNC machining centers, manual mills, and drill presses using a standard chuck or collet holder. The bright, uncoated solid carbide construction delivers rigidity and edge retention without added coating variables.

The OSG 300-2656 is intended for general machining operations where a reamed finish bore in the 0.2500 to 0.2999 inch diameter range is required. Typical applications include production machining of steel, cast iron, aluminum, and similar materials where consistent bore geometry and surface finish are critical. The straight shank allows straightforward mounting in any chuck or collet system sized for the shank diameter. This reamer is used in job shops, production facilities, and toolrooms handling light to medium-duty reaming tasks.

Key Features

• Solid carbide construction for rigidity and extended edge life compared to HSS alternatives
• Reamer diameter tolerance of +0.0001 to +0.0005 inches for close-tolerance bore finishing
• Six-flute straight design provides stable cutting action and consistent chip evacuation
• Bright, uncoated finish suits a wide range of general machining materials without coating compatibility concerns
• Straight cylindrical shank for easy mounting in standard chucks and collet holders
• No coolant-through requirement simplifies setup on machines without internal coolant delivery

Compatibility

Designed as a general-purpose chucking reamer for standard machine tool setups. Compatible with any chuck or collet holder accommodating a straight cylindrical shank in the appropriate diameter range. Suitable for use in CNC machining centers, knee mills, and drill presses equipped for reaming operations.

Installation Notes

This tool should be installed and operated by qualified machinists familiar with reaming procedures and toolholder requirements. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Secure the straight shank firmly in a precision collet or drill chuck to minimize runout, which directly affects bore tolerance and surface finish. Follow the machine manufacturer and tooling guidelines for recommended speeds and feeds appropriate to the workpiece material; do not apply cutting parameters outside the range established for solid carbide reamers.