M.a. Ford. 27212850 Chucking Reamer Wire 30 Solid Carbide

Product Description

The M.A. FORD. 27212850 is a solid carbide chucking reamer in wire size 30, designed to produce precision-finished holes in metal and other machined materials. With a reamer diameter of 0.1285 inches and a tight tolerance of +0.0001 to +0.0003 inches, this tool delivers consistent, accurate bores suited to close-tolerance work. The 4-flute straight-flute geometry and right-hand cut provide smooth material removal in a standard drill-press or CNC setup. The straight shank allows direct mounting in a collet or chuck. At 2.5 inches overall length with a 0.75-inch flute length, it is built for small-bore finish reaming in production and repair environments.

This reamer is suited for machine shop, toolroom, and maintenance applications where hole size and surface finish must meet tight dimensional requirements. It is typically used in CNC machining centers, drill presses, or turret lathes for finishing pre-drilled or bored holes to wire-size 30 diameter. The uncoated solid carbide construction makes it appropriate for use in cast iron, hardened steels, aluminum, and non-ferrous alloys where dimensional consistency is critical. Machinists and toolroom technicians are the primary users.

Key Features

• Wire size 30 diameter — 0.1285 inches with tolerance of +0.0001 to +0.0003 inches
• Solid carbide construction for rigidity and wear resistance in hard or abrasive materials
• 4-flute straight-flute design for smooth cutting action and consistent finish
• Right-hand spiral direction and right-hand cutting for standard machine operation
• Straight shank for direct mounting in a collet, drill chuck, or floating holder
• Uncoated — suitable for applications where coating interaction with workpiece material is a concern

Compatibility

Designed as an OEM-style precision chucking reamer for use in standard machine tool setups accepting straight-shank tooling in the 0.1285-inch diameter range.

Installation Notes

Chucking reamers are installed and serviced by machinists and toolroom technicians. Ensure the spindle and workpiece are fully stopped before mounting or removing the tool from the chuck or collet. Use a floating holder where possible to allow the reamer to self-align with the existing hole and prevent bell-mouthing. Pre-drill or bore the hole to the appropriate undersize before reaming; do not use this tool as a drilling tool.