Hertel 72297161 Chucking Reamer Letter P Hss 6 Flute

Product Description

The HERTEL 72297161 is a straight-shank chucking reamer designed for precision hole finishing in metal workpieces. Built from high-speed steel (HSS) with a bright, uncoated finish, it produces accurate, smooth bores to a diameter of 0.3230 inches (Letter P). The 6-flute, right-hand spiral geometry promotes efficient chip evacuation and consistent surface finish. With an overall length of 4.625 inches and a flute length of 1.5 inches, this reamer suits standard drill press, lathe, and machining center setups where controlled material removal and tight dimensional tolerances are required. Licensed machinists and toolroom technicians are the primary installers.

This chucking reamer is intended for finishing pre-drilled or bored holes to Letter P size in a range of 0.3000 to 0.3499 inches. It is commonly used in job shop, production machining, and maintenance environments where holes must meet close-tolerance fits for pins, bushings, or mating components. The straight-cylindrical shank seats directly in standard drill chucks or collet holders, making it compatible with drill presses, engine lathes, and CNC machining centers running right-hand cutting operations.

Key Features

• Letter P diameter (0.3230 inches) for precision hole sizing in the 0.3000 to 0.3499 inch range
• 6-flute right-hand spiral design for smooth cutting action and effective chip removal
• HSS construction provides wear resistance across a broad range of ferrous and non-ferrous workpiece materials
• Bright uncoated finish suitable for use with standard cutting fluids
• Straight-cylindrical shank fits drill chucks and collet holders without adapters
• Compact 4.625-inch OAL with a 1.5-inch flute length for controlled reaming depth

Compatibility

Designed as an OEM-style chucking reamer for use in drill presses, engine lathes, and machining centers equipped with standard drill chucks or collet holders that accept a straight-cylindrical shank.

Installation Notes

Chucking reamers should be installed by qualified machinists familiar with rotating cutting tool practices. Ensure the machine spindle is fully stopped and the chuck is securely tightened before beginning the operation. Always apply appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish. Pre-drill or bore the hole to the correct undersize before reaming to avoid overloading the flutes.