M.a. Ford. 27240400 Chucking Reamer Letter Y Solid Carbide

Product Description

The M.A. FORD. 27240400 is a solid carbide chucking reamer designed for precision hole finishing in metalworking and machining applications. Built to Series 272 standards, it features a Letter Y designation corresponding to a 0.4040 inch diameter, with a tight tolerance of +0.0001 to +0.0004 inches to ensure accurate, repeatable bore sizing. The 6-flute, right-hand straight flute configuration delivers smooth cutting action and consistent chip evacuation. With a 3.5 inch overall length and a 1.25 inch flute length, this reamer is suited for use in CNC machining centers, manual mills, and drill presses wherever close-tolerance through-hole or blind-hole reaming is required.

This reamer is intended for use in production and job-shop environments where hole diameter accuracy and surface finish are critical. It is installed by machinists and tool-and-die professionals working with ferrous and non-ferrous metals, plastics, and composite materials. The straight-cylindrical shank seats directly into standard drill chucks, collet chucks, or floating reamer holders, making it easy to integrate into existing setups. The bright, uncoated finish is well suited for applications where lubricity is provided by cutting fluid rather than a surface coating.

Key Features

• Solid carbide construction for superior hardness, wear resistance, and tool life compared to high-speed steel
• Letter Y diameter (0.4040 inches) with a tolerance of +0.0001 to +0.0004 inches for precision bore finishing
• 6-flute, right-hand straight flute design for smooth cutting and efficient chip removal
• Straight-cylindrical shank compatible with standard drill chucks and collet holders
• Bright, uncoated finish suitable for use with standard cutting fluids across a range of workpiece materials
• Series 272 design with 3.5 inch overall length and 1.25 inch flute length

Compatibility

Designed as an OEM-style precision chucking reamer for use in standard drill chucks, collet chucks, and floating reamer holders that accept a straight-cylindrical shank.

Installation Notes

Chucking reamers are installed by qualified machinists; ensure the spindle and workpiece are fully stopped before changing tooling. Secure the straight-cylindrical shank firmly in a properly sized collet or drill chuck to prevent runout, which directly affects hole tolerance. Always use an appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish. Inspect the reamer for chipping or wear before each use, as carbide tooling can be damaged by improper handling or dry cutting.