M.a. Ford 27256250 Chucking Reamer 9/16 in Solid Carbide

Product Description

The M.A. FORD 27256250 is a solid carbide chucking reamer designed for precision hole finishing in metalworking and machining applications. Built to Series 272 standards, it delivers a 9/16 inch (0.5625 inch decimal) reaming diameter with a tight tolerance of +0.0001 to +0.0004 inches, making it suitable for close-tolerance bores where dimensional accuracy is critical. The 4 inch overall length paired with a 1-1/2 inch straight flute provides controlled chip flow during right-hand cutting operations. A straight shank design allows secure mounting in standard drill chucks or collet holders. Machinists and tool-and-die professionals install this reamer as a finishing pass after drilling or boring.

This reamer is suited for production and job-shop environments where final bore sizing must meet tight dimensional tolerances. Typical applications include through-holes and blind holes in ferrous and non-ferrous metals where surface finish and size consistency are priorities. The uncoated solid carbide construction is a common choice for shops running high-speed finishing passes on cast iron, aluminum, and steel. The straight flute geometry is well matched to short-chipping materials and stable cutting conditions. No coolant-through feature means external flood or mist cooling applies where required by the machining setup.

Key Features

• Solid carbide construction for rigidity and wear resistance in demanding finishing operations
• Reaming diameter of 9/16 inch (0.5625 inch) with tolerance of +0.0001 to +0.0004 inches for close-tolerance bore work
• 6-flute straight geometry promotes consistent chip evacuation and smooth bore surface finish
• Right-hand spiral direction with right-hand cutting for standard spindle rotation setups
• Straight shank compatible with drill chucks and precision collet holders
• Uncoated finish maintains dimensional predictability without coating-thickness variables

Compatibility

Designed as an OEM-style machine reamer for use in CNC machining centers, manual mills, and drill presses equipped with standard straight-shank tool holders or collet chucks accepting a 9/16 inch shank diameter.

Installation Notes

Installation and use of this reamer should be performed by qualified machinists familiar with reaming best practices. Always power down and lock out the spindle before inserting or removing the tool from the holder. Ensure the bore is pre-drilled or bored to the appropriate undersize before reaming to avoid overloading the flutes. Apply appropriate cutting fluid or mist coolant as dictated by workpiece material and machine capability to extend tool life and maintain surface finish quality.