Osg 300-2055 Chucking Reamer 0.2055 in Solid Carbide

Product Description

The OSG 300-2055 is a solid carbide chucking reamer designed for precision hole finishing in general machining applications. With a reamer diameter of 0.2055 inches (wire size #5) and a diameter tolerance of +0.0001 to +0.0004 inches, this tool holds tight tolerances required for close-fit bores. The bright, uncoated finish suits a wide range of workpiece materials. Four straight flutes and a straight cylindrical shank make it compatible with standard drill chucks and collet holders. Overall length is 3.0 inches with a 1-inch flute length. This reamer is part of the OSG 300D series and is intended for use by machinists and tool-and-die professionals on manual and CNC equipment.

The 300-2055 is suited for reaming through-holes and blind holes in general machining environments, including job shops and production floors. Right-hand cutting direction and straight flute geometry make it appropriate for materials where chip evacuation is manageable without spiral geometry. Coolant-through capability is not featured on this tool, so conventional flood coolant or cutting oil applied externally is the standard approach. It is not an over/under size reamer and is not configured as a dowel pin reamer, making it a standard-dimension general-purpose tool.

Key Features

• Reamer diameter of 0.2055 inches with tolerance of +0.0001 to +0.0004 inches for precision bore finishing
• Solid carbide construction for rigidity and wear resistance in general machining
• Four straight flutes with right-hand cutting direction
• Bright, uncoated finish compatible with a broad range of workpiece materials
• Straight cylindrical shank fits standard drill chucks and collet holders
• Part of the OSG 300D series for standard carbide reaming applications

Compatibility

Designed as a general-purpose OEM-style solid carbide chucking reamer for standard hole-finishing operations on CNC and manual machining equipment that accept straight cylindrical shank tooling.

Installation Notes

Installation should be performed by a qualified machinist familiar with cutting tool setup. Secure the straight shank firmly in a drill chuck or precision collet holder, verifying runout before cutting. Ensure the workpiece is properly fixtured and the machine is at a complete stop before loading or unloading the tool. Apply appropriate external cutting fluid or flood coolant during use, as this tool does not support coolant-through delivery.