M.a. Ford. 27212470 Chucking Reamer 0.1247 in Solid Carbide

Product Description

The M.A. FORD. 27212470 is a solid carbide chucking reamer designed for precision hole finishing in metalworking and machining applications. With a reamer diameter of 0.1247 inches and a diameter tolerance of +0.0001 to +0.0003 inches, this tool holds tight dimensional control for close-fit bores. The straight flute geometry and right-hand cutting direction make it well suited for through-hole and short blind-hole reaming. Overall length is 2.25 inches with a flute length of 0.625 inches. It runs on a straight shank for use in standard drill chucks and collet holders. Machinists and tool-and-die professionals install this reamer in CNC machining centers, manual mills, and drill presses.

This reamer is used in precision machining environments where finished hole diameter, surface finish, and straightness are critical. Typical applications include reaming dowel pin holes, close-tolerance bearing bores, and hydraulic component passages in ferrous and non-ferrous materials. The solid carbide construction provides rigidity and wear resistance that extends tool life compared to high-speed steel alternatives, particularly in harder workpiece materials or high-cycle production runs. The uncoated finish suits a wide range of cutting fluid environments.

Key Features

• Solid carbide construction for rigidity and extended wear life
• Diameter tolerance of +0.0001 to +0.0003 inches for close-fit bore finishing
• 4-flute straight geometry for controlled chip flow and consistent surface finish
• Right-hand spiral and right-hand cut for standard machine spindle operation
• Straight shank compatible with standard drill chucks and collet holders
• Uncoated finish suitable for use with a wide range of cutting fluids

Compatibility

Designed for use in standard straight-shank collet chucks and drill chucks on CNC machining centers, manual mills, and drill presses where a 0.1247-inch finished bore diameter is required.

Installation Notes

This reamer is installed by qualified machinists or toolroom personnel. Ensure the machine spindle is fully stopped and locked out before changing tooling. Secure the straight shank firmly in a collet or drill chuck, verifying concentricity before operation to avoid oversizing the bore. Use appropriate cutting fluid for the workpiece material and do not exceed the reamer manufacturer recommended RPM range for the diameter and material combination.