M.a. Ford 27203540 Chucking Reamer 0.90mm Solid Carbide

Product Description

The M.A. FORD 27203540 is a solid carbide chucking reamer engineered for precision hole finishing in close-tolerance applications. Built to Series 272 specifications, it carries a 0.90 mm diameter with a reamer diameter tolerance of +0.004 to +0.008 mm, making it suitable for work that demands repeatable accuracy at sub-millimeter scale. The overall length is 38.00 mm (1.5 inches) with a 6.50 mm flute length. Its straight flute geometry and right-hand cutting direction are well suited to short-chipping materials. Licensed machinists, toolroom technicians, and precision CNC operators are the typical end users for a reamer of this size class.

This chucking reamer is intended for use in CNC machining centers, drill presses, and precision lathes where a straight-cylindrical shank provides secure chuck engagement. The 0.90 mm diameter places it in the micro-reaming category, commonly used in watch components, medical device housings, electronics hardware, and other precision-machined parts requiring tight bore tolerances. At 38.00 mm OAL, the tool fits standard collet and drill chuck setups without adaptation. No coolant-through capability is present, so flood or mist coolant applied externally is the standard approach for chip evacuation and heat management at this diameter.

Key Features

• Solid carbide construction for rigidity and wear resistance at micro diameters
• 0.90 mm diameter with +0.004 to +0.008 mm tolerance for close-tolerance bore finishing
• 4 straight flutes, right-hand cutting, bright/uncoated finish
• Straight-cylindrical shank for direct chuck or collet mounting
• 38.00 mm OAL with 6.50 mm flute length for compact reach in shallow bores
• Series 272 designation for consistent cross-reference within the M.A. FORD product line

Compatibility

Designed as a Series 272 OEM-style chucking reamer for use in any machine tool equipped to accept a straight-cylindrical shank at this diameter range; no specific machine model compatibility data was provided by the manufacturer for this SKU.

Installation Notes

Installation and use should be performed by qualified machinists or CNC toolroom technicians familiar with micro-diameter tooling. Before mounting, ensure the spindle and chuck are clean and free of runout, as concentricity errors are amplified at sub-1 mm diameters and will affect bore tolerance. Power down and lock out the machine before changing tooling. Do not exceed the tool manufacturer's recommended feed and speed parameters for solid carbide at this diameter, as micro reamers are sensitive to side loading and tool deflection.