Osg 300-3780 Chucking Reamer 9.6mm Solid Carbide

Product Description

The OSG 300-3780 is a solid carbide chucking reamer designed for precision hole finishing in general machining applications. With a reamer diameter of 9.6 mm (0.3780 inches) and a tight tolerance of +0.0001 to +0.0005 inches, it delivers consistent, close-tolerance bores in a single pass. The 6-flute straight configuration provides smooth cutting action and efficient chip evacuation. At 89 mm overall length with a 32 mm flute length, this reamer fits standard drill press, lathe, and machining center setups. It is part of the OSG Series 300D line and is intended for right-hand cutting in production and toolroom environments.

The 300-3780 suits general machining operations where hole diameter accuracy and surface finish are critical. Its straight cylindrical shank allows use in standard drill chucks and collet holders without modification. The bright, uncoated carbide surface is appropriate for a broad range of workpiece materials commonly encountered in job shop and production machining. Machinists and tool and die technicians working on CNC machining centers, manual mills, or drill presses will find this reamer a reliable option for finishing pre-drilled or bored holes to precise diameter specifications.

Key Features

• Solid carbide construction for rigidity and wear resistance in demanding machining environments
• 9.6 mm diameter with a tolerance of +0.0001 to +0.0005 inches for tight, repeatable fits
• 6-flute straight geometry promotes smooth cutting and effective chip clearance
• Bright, uncoated finish suitable for general-purpose machining across a range of materials
• Straight cylindrical shank compatible with standard drill chucks and collet systems
• Right-hand cutting direction, standard for conventional reaming operations

Compatibility

Designed as a general-purpose chucking reamer for standard drill press, lathe, and CNC machining center setups accepting a straight cylindrical shank in the 9.6 mm diameter range.

Installation Notes

Chucking reamers are installed by qualified machinists using appropriate collet holders or drill chucks rated for the shank diameter. Ensure the workpiece is securely fixtured and the spindle is at the correct speed and feed for the material before engaging the reamer. Never use a chucking reamer to remove excessive stock — pre-drill or bore the hole to within the recommended allowance before reaming. Follow applicable shop safety procedures and machine guarding requirements during tool changes and operation.