M.a. Ford 27204920 Chucking Reamer 1.25 Mm Solid Carbide

Product Description

The M.A. FORD 27204920 is a solid carbide chucking reamer designed for precision hole finishing in metalworking and machining applications. With a 1.25 mm (0.0492 inch) cutting diameter, a 4-flute straight geometry, and a reamer diameter tolerance of +0.004/+0.008 mm, this tool delivers consistent bore accuracy in tight-tolerance work. The straight shank interfaces directly with standard chucks and collets. At 1.5 inches overall length with a 0.375 inch flute length, it is sized for shallow finishing passes in small-bore applications. Solid carbide construction provides the rigidity and wear resistance required for ferrous and non-ferrous materials alike. Installation and operation are performed by machinists and tool-and-die professionals.

This reamer is suited for precision reaming operations on CNC machining centers, manual mills, and drill presses where repeatable hole geometry is critical. Typical applications include finishing pilot holes, bearing bores, and dowel pin holes in production and toolroom environments. The uncoated solid carbide substrate is well matched to dry cutting or light lubrication in aluminum, brass, cast iron, and mild steel. The Series 272 designation places this tool within M.A. FORD's line of small-diameter carbide reamers intended for high-precision, low-stock-removal finishing passes.

Key Features

• Solid carbide construction for rigidity and extended tool life in demanding materials
• 1.25 mm (0.0492 inch) cutting diameter with a tolerance of +0.004/+0.008 mm for tight-bore accuracy
• 4-flute straight geometry produces a smooth, consistent finish on the bore wall
• Right-hand cutting direction with right-hand spiral for standard CW spindle rotation
• Straight shank for direct chuck or collet mounting without adapters
• Uncoated finish suitable for use with cutting fluid or dry in non-ferrous and ferrous materials

Compatibility

Designed as an OEM-style solid carbide chucking reamer for use in standard drill chucks and collet systems accepting straight-shank tooling sized for small-diameter precision reaming applications.

Installation Notes

This tool should be installed by a qualified machinist familiar with small-diameter carbide tooling. Ensure the spindle is fully powered down and the machine is in a safe state before changing tooling. Carbide is brittle — avoid side loading, interrupted cuts, or excessive feed rates that can cause chipping or breakage. Verify runout at the shank before initiating a cut, as even minor misalignment significantly affects bore tolerances at this diameter.