Hertel 72290059 Chucking Reamer Wire 5 Hss Straight Flute

Product Description

The HERTEL 72290059 is a high-speed steel (HSS) chucking reamer designed to finish-ream holes to a precise wire size 5 diameter of 0.2055 inches. Built with six straight flutes and a right-hand cutting direction, it delivers clean, accurate bore finishing in metalworking applications. The straight-cylindrical shank seats securely in a drill chuck or collet chuck, making it compatible with standard machine setups. At 3.75 inches overall length with a 1.25-inch flute length, this reamer is suited for moderate-depth holes in production or toolroom environments. The bright, uncoated finish is appropriate for general-purpose reaming in steel, cast iron, aluminum, and similar materials.

This chucking reamer is intended for use by machinists and tool and die professionals operating drill presses, lathes, and milling machines. It fits into standard chucking setups for production drilling lines and toolroom applications where hole tolerances in the 0.2000 to 0.2499-inch decimal inch range must be held consistently. Wire gauge sizing makes it a common choice for precision fits involving pins, dowels, and close-tolerance assemblies in light to medium stock removal finishing passes.

Key Features

• Wire size 5 reamer diameter — 0.2055 inches decimal equivalent for precise hole finishing
• Six straight flutes for consistent chip evacuation in through and blind hole applications
• Right-hand cutting direction for standard machine spindle operation
• High-speed steel (HSS) construction for durability across a range of workpiece materials
• Straight-cylindrical shank for secure chuck or collet holding
• Bright, uncoated finish — no coating interference on close-tolerance bore work

Compatibility

Designed as a standard chucking reamer for use in drill presses, lathes, and milling machines equipped with drill chucks or collet holders accepting a straight-cylindrical shank in the 0.2000 to 0.2499-inch diameter range.

Installation Notes

Chucking reamers are installed and removed by a qualified machinist with the machine powered down and the spindle at a complete stop. Ensure the straight-cylindrical shank is fully seated and securely clamped in the chuck or collet before operation. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain surface finish quality. Never reverse spindle direction while the reamer is engaged in a cut, as this can damage flute edges and compromise hole finish.