Hertel 72296635 Chucking Reamer 0.4355 in Hss 6 Flute

Product Description

The HERTEL 72296635 is a high-speed steel (HSS) chucking reamer designed for precision hole finishing in metal machining applications. With a reamer diameter of 0.4355 inches and a right-hand spiral flute configuration, this tool delivers accurate, smooth bores in drilled holes that require tight dimensional tolerances. The straight-cylindrical shank mounts directly into a drill chuck or collet on a lathe, drill press, or CNC machine. Six flutes distribute cutting load evenly and help maintain roundness and finish quality. The bright, uncoated HSS construction suits general-purpose ferrous and non-ferrous materials. This is a dowel pin reamer sized to 0.4355 D/P, making it appropriate for applications where precise pin-fit holes are required.

This reamer is used in machine shop, toolroom, and production environments where holes must be brought to a final, precise diameter after drilling. The 5-1/2 inch overall length and 1-3/4 inch flute length accommodate typical workpiece depths encountered in general machining work. It is suited for use on manual lathes, drill presses, and CNC equipment. Machinists and tool-and-die professionals installing dowel pins or fitting close-tolerance cylindrical features will find this size appropriate for 0.4355-inch nominal pin fits.

Key Features

• 0.4355 inch reamer diameter matched to 0.4355 D/P dowel pin specification
• HSS construction provides toughness for general-purpose ferrous and non-ferrous materials
• Right-hand spiral flutes — 6 total — for smooth cutting action and even chip load distribution
• Straight-cylindrical shank for direct chuck or collet mounting
• Bright, uncoated finish suitable for use with standard cutting fluids
• 5-1/2 inch overall length with 1-3/4 inch flute length for typical workpiece depths

Compatibility

Designed as a standard chucking reamer for use in drill chucks and collets on lathes, drill presses, and CNC machining centers that accept straight-cylindrical shank tooling in this diameter range.

Installation Notes

A licensed machinist or qualified toolroom operator should install and operate this reamer. Always secure the shank fully in the chuck or collet before operation, and ensure the machine spindle is at the correct RPM for the material being reamed. Apply cutting fluid appropriate for the workpiece material to extend tool life and improve surface finish. Never ream a hole that has not been pre-drilled to the proper undersize diameter, as reaming from solid stock will damage the tool.