Hertel 45676624 Chucking Reamer 0.3930 in Solid Carbide

Product Description

The HERTEL 45676624 is a solid carbide chucking reamer designed for precision hole finishing in machine tool applications. With a reamer diameter of 0.3930 inches, a 3.5-inch overall length, and 1.25-inch straight flute length, this tool delivers tight dimensional tolerances in through-holes and blind holes. The bright, uncoated solid carbide construction provides rigidity and wear resistance suited to production environments. Six right-hand cutting flutes distribute cutting forces evenly, reducing chatter and improving surface finish. A straight-cylindrical shank allows direct chuck mounting on CNC machining centers, knee mills, and drill presses. This reamer is intended for use by machinists and toolroom professionals working with close-tolerance bore specifications.

This chucking reamer is suited for finishing operations on ferrous and non-ferrous materials where bore diameter, roundness, and surface finish must meet tight print tolerances. The 0.3930-inch diameter falls within the 0.3500 to 0.3999 decimal inch reamer range, making it appropriate for production reaming of pre-drilled or bored holes in job shop, aerospace, automotive, and general machining applications. The straight flute geometry is well suited for interrupted cuts and short-chipping materials such as brass, aluminum, and cast iron.

Key Features

• Solid carbide construction for rigidity and extended tool life in production reaming
• 0.3930-inch finished bore diameter with straight-cylindrical shank for direct chuck mounting
• Six straight flutes with right-hand cutting direction for smooth, controlled material removal
• Bright, uncoated finish suitable for a wide range of workpiece materials
• 1.25-inch flute length provides adequate engagement for typical reaming depths at this diameter
• 3.5-inch overall length accommodates standard chuck-to-workpiece clearances on common machine setups

Compatibility

Designed as a standard chucking reamer for use in CNC machining centers, knee mills, drill presses, and other machine tools equipped with a chuck or collet capable of accepting a straight-cylindrical shank at this diameter range.

Installation Notes

Installation and operation should be performed by qualified machinists familiar with reaming procedures and machine tool safety. Ensure the spindle is fully stopped and the machine is powered down before mounting or removing the reamer from the chuck or collet. Use appropriate cutting fluid for the workpiece material to extend tool life and achieve optimal surface finish. Pre-drill or bore the hole to the recommended undersize before reaming to avoid overloading the flutes.