Hertel 72290471 Chucking Reamer 47 Hss 4 Flute Straight Shank

Product Description

The HERTEL 72290471 is a high-speed steel (HSS) chucking reamer in wire gauge size 47, with a decimal diameter of 0.0785 inches. It is designed to finish-ream small-diameter through-holes and blind holes to tight tolerances in metal workpieces. The 4-flute, right-hand cutting geometry with a straight flute profile provides smooth, consistent material removal. The bright, uncoated finish suits general-purpose reaming across a range of ferrous and non-ferrous materials. With a 2-inch overall length and a straight-cylindrical shank, this reamer is intended for use in machine spindles, drill presses, CNC machining centers, and manual chucking equipment operated by machinists and tool-and-die professionals.

This chucking reamer is suited for precision hole-finishing operations in job shop, production machining, and maintenance-repair-overhaul environments. The small wire-gauge diameter makes it appropriate for work requiring fine, close-tolerance bores in instrument components, fixtures, jigs, and similar small-part applications. It is sold individually and is a standard catalog item for machinists working with sub-0.1-inch diameter holes that require a finished, reamed surface rather than a drilled surface.

Key Features

• Wire gauge size 47 with a decimal diameter of 0.0785 inches for precise small-bore finishing
• 4-flute straight flute geometry for consistent chip evacuation and smooth hole finish
• Right-hand cutting direction compatible with standard machine spindle rotation
• HSS construction provides adequate toughness and wear resistance for general-purpose reaming
• Bright, uncoated finish suitable for use with standard cutting fluids across a range of materials
• Straight-cylindrical shank for direct chucking in collets, drill chucks, and machine spindles

Compatibility

Designed as an OEM-style replacement or standard tooling selection for any machine setup accepting a straight-cylindrical shank reamer with a 0.0785-inch cutting diameter and 2-inch overall length.

Installation Notes

Chucking reamers are installed and operated by machinists using drill presses, milling machines, lathes, or CNC machining centers. Secure the straight-cylindrical shank firmly in a collet or drill chuck before use, and verify runout is within acceptable limits before cutting. Always apply an appropriate cutting fluid for the workpiece material to extend tool life and achieve the target surface finish. Inspect the reamer for chipping or wear before each use, and do not use a damaged reamer.