Hertel 72290497 Chucking Reamer Size 49 0.0730 in Hss

Product Description

The HERTEL 72290497 is a straight-flute chucking reamer designed for precision hole finishing in metalworking applications. Built from high-speed steel (HSS) with a bright, uncoated finish, this reamer holds a wire gauge size 49 diameter of 0.0730 inches. It features a straight-cylindrical shank for secure chuck mounting and cuts in a right-hand direction with 4 flutes. At 2 inches overall length with a 3/4-inch flute length, it is suited for machine reaming operations where tight tolerances and smooth bore finishes are required. Machinists and tool-and-die professionals are the primary users of this style of reamer.

This chucking reamer is intended for use in drill presses, milling machines, and CNC machining centers performing finish reaming of small-diameter holes. The wire gauge size 49 designation makes it appropriate for small, precise bores in ferrous and non-ferrous metals where dimensional accuracy is critical. Its straight-cylindrical shank allows direct mounting in standard collet chucks or drill chucks. The compact flute length suits shallow reaming passes in thin stock or close-tolerance through-holes.

Key Features

• Wire gauge size 49 reamer diameter of 0.0730 inches for small, precise bores
• 4 straight flutes with right-hand cutting direction
• HSS construction with bright, uncoated finish for general-purpose metal reaming
• Straight-cylindrical shank for compatibility with standard collet and drill chucks
• 2-inch overall length with 3/4-inch flute length for compact reach
• Not an over/under size reamer and not a dowel pin reamer — standard tolerance finish tool

Compatibility

Designed as a standard chucking reamer for use in machine tool setups requiring a wire size 49 (0.0730-inch diameter) straight-flute finish reamer with a straight-cylindrical shank.

Installation Notes

This reamer is installed by machinists in a drill press, milling machine, or CNC spindle using an appropriate collet or drill chuck sized for the straight-cylindrical shank. The workpiece and machine spindle should be fully stopped and secured before mounting or removing the tool. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain bore finish quality. Follow shop safety practices and applicable machine guarding standards when operating rotating cutting tools.