Hertel 72033780 Chucking Reamer 0.3780 in Hss 6 Flute

Product Description

The HERTEL 72033780 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, it delivers consistent sizing and smooth surface finish in through and blind holes. The reamer measures 0.3780 inches in diameter with a 7-inch overall length and a 1.75-inch flute length. The straight-cylindrical shank seats cleanly in standard drill chucks and collet holders. With 6 flutes and right-hand cutting direction, it provides stable, chatter-resistant performance suited to manual and CNC-driven operations alike.

This chucking reamer is intended for machine use in metalworking shops, tool rooms, and production environments where close-tolerance hole finishing is required. It is appropriate for use in drill presses, lathes, and milling machines with appropriate work-holding. The 0.3780-inch diameter falls within the 0.3500 to 0.3999 decimal inch reamer diameter range, making it suitable for finishing holes to near-precision tolerances in ferrous and non-ferrous materials.

Key Features

• 0.3780-inch cutting diameter for accurate hole sizing within the 0.3500 to 0.3999 inch range
• 6 straight flutes with right-hand cutting direction for smooth, stable material removal
• HSS construction provides durability across a range of common workpiece materials
• Bright, uncoated finish allows straightforward inspection and resharpening
• Straight-cylindrical shank for reliable clamping in standard chucks and collets
• 7-inch overall length with 1.75-inch flute length suits typical machine reaming setups

Compatibility

Designed as an OEM-style machine reamer suitable for use in drill presses, lathes, and CNC milling machines that accept straight-cylindrical shank tooling in the corresponding diameter range.

Installation Notes

Chucking reamers should be installed by qualified machinists or toolroom personnel. Ensure the machine spindle is fully stopped and locked out before inserting or removing the tool from the chuck or collet. Use appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish. Never use a chucking reamer as a drill to remove stock — pre-drill to the correct undersize diameter before reaming.