Hertel 72034325 Chucking Reamer 0.4320 in 6 Flute Hss

Product Description

The HERTEL 72034325 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, this reamer delivers accurate sizing on through and blind holes where tight tolerances are required. The straight-cylindrical shank seats securely in standard drill chucks or collet holders. At 0.4320 inches in diameter with a 7-inch overall length and a 1.75-inch flute length, this tool is suited for moderate-depth reaming operations on the mill, drill press, or lathe. Right-hand cutting direction is standard for conventional machine setups.

This chucking reamer is used in job shop, production machining, and maintenance environments where holes must be brought to a precise finish diameter after drilling. It is appropriate for ferrous and non-ferrous materials where HSS tooling provides adequate performance at moderate cutting speeds. The 0.4320-inch diameter falls within a common range for pin, bushing, and bearing bore applications. Machinists, tool-and-die makers, and maintenance technicians typically select this style of reamer for manual-feed or CNC drilling operations requiring a fine surface finish and close dimensional control.

Key Features

• 0.4320-inch reaming diameter for precise hole finishing
• HSS construction provides good toughness and re-sharpenability
• 6 straight flutes for consistent chip evacuation and smooth bore finish
• Right-hand cutting direction compatible with standard machine setups
• Straight-cylindrical shank fits standard drill chucks and collet holders
• Bright, uncoated finish suitable for general-purpose machining

Compatibility

Designed as a general-purpose chucking reamer for use in drill presses, lathes, milling machines, and CNC machining centers equipped with a standard drill chuck or collet capable of holding a straight-cylindrical shank at the specified diameter.

Installation Notes

Installation and use should be performed by a qualified machinist familiar with reaming operations. Ensure the workpiece is securely fixtured and the machine spindle is properly aligned before reaming to avoid bell-mouthing or oversizing the bore. Use an appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish. Inspect the reamer for wear or chipping before each use; a damaged cutting edge will produce out-of-tolerance results.