Hertel 72037278 Chucking Reamer 0.727 in Hss 8 Flute

Product Description

The HERTEL 72037278 is a straight-flute chucking reamer designed for precision hole finishing in metal machining applications. Built from high-speed steel (HSS) with a bright, uncoated finish, it holds a reamer diameter of 0.7270 inches and an overall length of 9 inches. The straight-cylindrical shank seats securely in standard drill chucks or collet holders, and the 8-flute geometry distributes cutting load evenly for consistent surface finish and tight dimensional tolerance. Machinists and tool-and-die professionals use this style of reamer as the final pass to bring a bored or drilled hole to finished size.

This chucking reamer is suited for general-purpose machine shop use, including manual mills, drill presses, CNC machining centers, and turret lathes. With a 2.25-inch flute length and right-hand cutting direction, it is appropriate for through-holes and blind holes within its reach. It falls within the 0.7000 to 0.9999 inch diameter range category and is a standard catalog item sold individually. Applications include fixture plates, bearing bores, pin holes, and any close-tolerance hole requiring a smooth, accurate finish.

Key Features

• 0.7270 inch reamer diameter for precise hole sizing in the 0.7000 to 0.9999 inch range
• 8-flute straight-flute design for even load distribution and smooth surface finish
• High-speed steel (HSS) construction for durability across a wide range of workpiece materials
• Bright, uncoated finish — suitable for use with cutting fluids across general machining applications
• Straight-cylindrical shank for reliable chuck or collet retention
• Right-hand cutting direction, 9 inches overall length with 2.25-inch flute length

Compatibility

Designed as a standard chucking reamer compatible with drill chucks and collet systems accepting a straight-cylindrical shank at this diameter class. Fits typical machine tool spindles on mills, lathes, and drill presses used in general metalworking applications.

Installation Notes

Chucking reamers are installed by a machinist or tool-and-die technician into a drill chuck or collet holder mounted in a machine spindle. Always ensure the workpiece and machine are secured and the spindle is at a stop before changing or seating the reamer. Use an appropriate cutting fluid for the workpiece material to extend tool life and improve finish quality. Never run a reamer in reverse, as this dulls the cutting edges and can damage the flute geometry.