M.a. Ford. 27239300 Chucking Reamer 0.393 in Solid Carbide

Product Description

The M.A. FORD. 27239300 is a solid carbide chucking reamer designed for precision hole finishing in machining operations. With a reamer diameter of 0.393 inches and a tight tolerance of +0.0001 to +0.0004 inches, this tool delivers consistent, accurate bore sizing in a single pass. The 6-flute straight design and right-hand cut geometry support smooth chip evacuation and stable cutting action. At 3.5 inches overall length with a 1.25-inch flute length, it fits standard chuck setups on drill presses, lathes, and CNC machining centers. Machinists and tool-and-die professionals use this reamer for final-pass sizing of through-holes and blind holes where tolerance control is critical.

This chucking reamer is suited for precision metalworking applications in both job shop and production environments. The straight shank allows direct mounting in drill chucks or collet holders without adapters. The uncoated solid carbide construction holds up well in non-ferrous metals, cast iron, and other materials where carbide tooling is standard. It is appropriate for use where consistent hole geometry and surface finish are required, such as in fixture plates, bearing seats, and dowel-pin hole preparation.

Key Features

• Solid carbide construction for rigidity and long tool life in precision reaming applications
• 0.393-inch diameter with +0.0001 to +0.0004 inch tolerance for tight bore control
• 6-flute straight geometry for smooth, stable cutting and efficient chip removal
• Right-hand cut, straight shank for compatibility with standard drill chucks and collet holders
• 3.5-inch overall length with 1.25-inch flute length suits common chuck-mounted setups
• Uncoated finish - ready to use as-delivered or can be applied with compatible coatings post-purchase

Compatibility

Designed as an OEM-style precision chucking reamer for use in standard drill chucks, collet holders, and CNC tool holders that accept straight-shank tooling of this diameter range.

Installation Notes

This reamer is installed by a machinist or tooling technician into a compatible chuck or collet holder on a drill press, lathe, or machining center. Ensure the machine is fully powered down and the spindle is locked before changing or setting tooling. Verify chuck or collet holding capacity matches the straight shank diameter before use. Run at manufacturer-recommended speeds and feeds for carbide tooling in the material being reamed - do not use this tool for initial hole drilling.