Hertel 72033798 Chucking Reamer 0.3790 in Hss 6 Flute

Product Description

The HERTEL 72033798 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 consistent sizing and surface finish in a wide range of drilling and boring operations. It features a 0.3790 inch diameter, a 7 inch overall length, and a 1-3/4 inch flute length, making it well suited for moderate-depth reaming passes. The straight-cylindrical shank provides secure, concentric clamping in standard chucks and collets. Right-hand cutting direction is standard for conventional lathe and drill press setups.

This chucking reamer is used in machine shop environments for finishing drilled or bored holes to tight dimensional tolerances. Typical applications include production and maintenance machining on lathes, drill presses, and CNC machining centers. It is sized within the 0.3500 to 0.3999 inch diameter range, making it a practical choice for reaming holes that require a close-tolerance fit for pins, bushings, or dowels. Machinists and toolroom technicians are the primary installers and operators of this tool.

Key Features

• 0.3790 inch diameter for precise hole finishing within the 0.3500 to 0.3999 inch range
• High-speed steel (HSS) construction for durability across a broad range of work materials
• 6 straight flutes for smooth cutting action and consistent chip evacuation
• Bright, uncoated finish — no additional coating to affect dimensional tolerances
• Straight-cylindrical shank for reliable grip in standard chucks and collets
• Right-hand cutting direction compatible with conventional machine spindle rotation

Compatibility

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

Installation Notes

This tool should be installed and operated by qualified machinists or toolroom personnel. Secure the straight-cylindrical shank firmly in a compatible chuck or collet before operation, and verify runout with an indicator before beginning a reaming pass. Always apply appropriate cutting fluid for the work material to extend tool life and improve surface finish. Never use a reamer to remove excessive stock — pre-drill or bore the hole close to finished size before reaming.