Hertel 72290216 Chucking Reamer Wire 21 Hss 6 Flute

Product Description

The HERTEL 72290216 is a high-speed steel (HSS) chucking reamer designed for precision hole finishing in metalworking applications. It carries a wire gauge designation of No. 21, corresponding to a decimal diameter of 0.1590 inches. With a straight-cylindrical shank, the tool mounts directly into standard drill chucks or collet holders. Six straight flutes provide consistent chip evacuation and a smooth surface finish on the reamed bore. The bright, uncoated finish is typical for HSS reamers used across a wide range of ferrous and non-ferrous materials. Right-hand cutting direction is standard for conventional machine tool operation.

This reamer is suited for light-duty precision reaming on manual mills, drill presses, and CNC machining centers where close-tolerance hole finishing at small diameters is required. The compact overall length of 3.25 inches and 1.125-inch flute length make it appropriate for shallow-to-moderate depth holes in production or maintenance machining environments. Machinists, tool and die makers, and machine shop technicians are the primary users of this type of tool.

Key Features

• Wire size No. 21 diameter: 0.1590 inches, falling within the 0.1500 to 0.1999 inch range
• High-speed steel construction for durability across ferrous and non-ferrous workpiece materials
• Six straight flutes for consistent chip flow and finish quality
• Right-hand cutting direction compatible with standard machine tool spindle rotation
• Straight-cylindrical shank for direct chuck or collet mounting without adapters
• Bright, uncoated finish suitable for general-purpose reaming with standard cutting fluids

Compatibility

Designed as an OEM-style replacement or direct-use chucking reamer for machine tools equipped with standard drill chucks or collet systems accepting a straight-cylindrical shank at the 0.1590 inch diameter range.

Installation Notes

Installation and use should be performed by a qualified machinist or tooling technician. Secure the straight-cylindrical shank firmly in a drill chuck or collet holder before operation, and verify runout with a dial indicator when tolerance is critical. Always apply an appropriate cutting fluid for the workpiece material to extend tool life and maintain surface finish quality. Power down and lock out the machine spindle before changing or inspecting the reamer.