Hertel 72033897 Chucking Reamer 0.3890 in Hss 6 Flute

Product Description

The HERTEL 72033897 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 clean, accurate bores in a range of ferrous and non-ferrous materials. It measures 0.3890 inches in diameter with a 7-inch overall length (OAL) and a 1.75-inch flute length. The straight-cylindrical shank allows direct mounting in drill chucks, collets, or machine tool holders. With 6 flutes and right-hand cutting direction, it provides smooth stock removal and consistent dimensional accuracy. Installed by machinists and toolroom technicians, it is suited for use in drill presses, lathes, and CNC machining centers.

This reamer is appropriate for finish-reaming through-holes and blind holes in production and maintenance machining environments. The 0.3890-inch diameter falls within the 0.3500 to 0.3999-inch decimal inch range, making it a standard selection for close-tolerance hole sizing in both job shop and production floor settings. The right-hand cutting geometry and straight flute configuration work well in a variety of general-purpose materials where a controlled, repeatable finish bore is required.

Key Features

• 0.3890-inch diameter with straight-cylindrical shank for direct chuck or collet mounting
• 6-flute straight configuration for smooth cutting action and consistent finish
• Right-hand cutting direction for standard machine spindle rotation
• High-speed steel (HSS) construction for durability across general-purpose materials
• Bright uncoated finish suitable for use with cutting fluids
• 7-inch OAL with 1.75-inch flute length for reach in standard workpiece depths

Compatibility

Designed as a general-purpose chucking reamer compatible with drill presses, engine lathes, turret lathes, and CNC machining centers equipped with standard drill chucks or collet holders accepting a straight-cylindrical shank.

Installation Notes

Installation should be performed by a qualified machinist following standard toolroom practices. Secure the shank fully in a chuck or collet and verify runout before cutting. Always apply appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish. Power down and de-energize the machine spindle completely before installing or removing the reamer.