Osg 300-2812 Chucking Reamer 9/32 in Solid Carbide

Product Description

The OSG 300-2812 is a solid carbide chucking reamer designed for precision hole finishing in general machining applications. With a reamer diameter of 0.2812 inches (9/32 inches) and a diameter tolerance of +0.0001 to +0.0005 inches, it delivers tight, consistent sizing in bored or drilled holes. The straight flute geometry and right-hand cut make it suitable for use in through-holes and blind holes where chip evacuation is manageable. Machining professionals and tool-room operators use this reamer to achieve finish-quality hole geometry in ferrous and non-ferrous workpieces where dimensional accuracy is critical.

The OSG 300-2812 belongs to OSG Series 300D and is intended for standard general machining applications in production and job-shop environments. Its bright, uncoated finish suits a broad range of base materials. The straight cylindrical shank seats directly into drill chucks, collet chucks, or floating reamer holders on CNC machining centers, manual mills, and drill presses. It is typically installed in applications where a pre-drilled or pre-bored hole must be brought to a precise finished diameter.

Key Features

• Solid carbide construction provides rigidity and wear resistance for consistent hole sizing
• Diameter tolerance of +0.0001 to +0.0005 inches for tight, repeatable finish dimensions
• 6-flute straight geometry for smooth cutting action and good surface finish
• Right-hand cut with bright, uncoated finish suitable for a wide range of workpiece materials
• Straight cylindrical shank for compatibility with standard drill chucks and collet holders
• Series 300D standard carbide reamer rated for general machining use

Compatibility

Designed as a general-purpose chucking reamer for use in CNC machining centers, manual milling machines, and drill presses equipped with drill chucks, collet chucks, or floating reamer holders accepting a straight cylindrical shank.

Installation Notes

Chucking reamers should be installed by qualified machining professionals familiar with cutting tool setup and feeds-and-speeds selection. Ensure the workpiece is securely fixtured and the machine spindle is fully stopped before mounting or removing the tool. Use a floating reamer holder where possible to compensate for minor spindle misalignment and extend tool life. Always pre-drill or pre-bore the hole to within recommended stock allowance before reaming to avoid tool deflection or premature wear.