Osg 300-2756 Chucking Reamer 7mm Straight Flute Carbide

Product Description

The OSG 300-2756 is a solid carbide chucking reamer designed for precision hole finishing in general machining applications. Built to Series 300D standards, it holds a reamer diameter tolerance of +0.0001 to +0.0005 inches, making it suitable for close-tolerance work where bore quality and surface finish matter. The straight flute geometry and right-hand cutting direction provide clean, consistent material removal. With an overall length of 83 mm and a straight cylindrical shank, this reamer mounts directly in standard drill chucks or collet holders without modification. Machinists and tool-and-die professionals use it for finishing pre-drilled or bored holes to final diameter.

The 300-2756 is suited for general machining environments where a standard, uncoated solid carbide reamer meets the application requirement. The 7 mm nominal diameter and 29 mm flute length make it appropriate for moderate-depth through-holes and blind holes in a range of workpiece materials. No coolant-through capability means it is best applied in setups where flood or mist cooling is supplied externally. It is sold individually and intended for use in CNC machining centers, manual mills, and drill presses equipped with appropriate work-holding.

Key Features

• Solid carbide construction for rigidity and wear resistance in general machining
• 7 mm nominal diameter with tolerance of +0.0001 to +0.0005 inches for close-tolerance bore finishing
• Straight cylindrical shank for compatibility with standard chucks and collet holders
• 6-flute straight geometry with right-hand cut for smooth, consistent material removal
• Bright uncoated finish; Series 300D standard carbide reamer
• 29 mm flute length suitable for moderate-depth holes

Compatibility

Designed as a standard OEM-style solid carbide chucking reamer for general machining applications requiring a 7 mm finished bore diameter.

Installation Notes

Installation is performed by qualified machinists. Secure the reamer in a rigid chuck or precision collet holder before operation, and ensure the workpiece is firmly clamped. Power down the machine spindle completely before changing tooling. Follow shop-standard feeds and speeds for solid carbide reamers in the workpiece material being machined, and apply adequate external cutting fluid when coolant-through is not available.