Hertel 72300296 Chucking Reamer 29/64 in Cobalt Steel

Product Description

The HERTEL 72300296 is a chucking reamer designed for precision hole finishing in metalworking applications. Built from cobalt steel with a bright, uncoated finish, it delivers reliable performance in tough materials including stainless steel and heat-resistant alloys. The straight flute geometry and right-hand cutting direction make it well suited for through-hole and blind-hole reaming where a clean, accurate bore is required. With a nominal diameter of 29/64 inches (0.4531 inches decimal), a 1-3/4 inch flute length, and a 7-inch overall length, this reamer is sized for production and job shop use on standard drill presses, CNC machining centers, and manual lathes.

This chucking reamer is intended for machinists, toolroom professionals, and general metalworking operations requiring accurate hole sizing within the 0.4000 to 0.4999 inch diameter range. The straight-cylindrical shank mounts directly into standard drill chucks and collet holders without adapters, making it straightforward to deploy on a wide range of machine tool setups. It is not configured as an over/under size reamer or a dowel pin reamer, so it targets standard nominal-size finish reaming work.

Key Features

• Cobalt steel construction for improved heat and wear resistance over standard high-speed steel
• Straight flute design provides clean cutting action on a variety of ferrous and non-ferrous materials
• Right-hand cutting direction suits conventional machine tool spindle rotation
• Bright, uncoated finish maintains close dimensional tolerances right from the tool
• Straight-cylindrical shank fits standard drill chucks and collet holders without adapters
• 29/64 inch nominal diameter (0.4531 inches decimal) covers the mid-range of the 0.4000 to 0.4999 inch class

Compatibility

Designed as a standard chucking reamer for use in drill presses, CNC machining centers, turret lathes, and manual lathes equipped with drill chucks or collet holders accepting a straight-cylindrical shank in the 29/64 inch diameter class.

Installation Notes

Installation and use should be performed by a qualified machinist or toolroom professional. Secure the straight-cylindrical shank firmly in a drill chuck or collet holder and verify runout before cutting. Always reduce spindle speed and apply appropriate cutting fluid when reaming cobalt steel tooling into hard or abrasive workpiece materials to maximize tool life. Power down and lock out the machine spindle before changing or inspecting the reamer.