Hertel 79890737 Chucking Reamer Wire 38 Solid Carbide

Product Description

The HERTEL 79890737 is a solid carbide chucking reamer designed for precision hole finishing in metalworking and machining applications. Sized to wire gauge 38 with a decimal diameter of 0.1015 inches, this reamer holds a tight tolerance of 0.0000 to 0.0002 inches, making it suitable for close-tolerance bore work. The straight-flute, right-hand-cut geometry with a straight cylindrical shank allows for reliable chuck mounting in drill presses, CNC machining centers, and manual lathes. Solid carbide construction provides rigidity and wear resistance when reaming ferrous and non-ferrous materials at production feed rates.

This reamer is intended for finishing pre-drilled or bored holes to wire size 38 diameter in precision machining environments. With an overall length of 2.25 inches and a flute length of 0.625 inches, it is well suited for shallow finishing passes in small-diameter bores. The bright, uncoated finish makes it appropriate for use with cutting fluids in standard machine shop conditions. Machinists and tool-and-die makers working in job shops, production facilities, or maintenance departments will find this reamer appropriate for small-bore finishing where dimensional accuracy is critical.

Key Features

• Wire size 38 diameter (0.1015 inches) with a tolerance of 0.0000 to 0.0002 inches for precision finishing
• Solid carbide construction for rigidity, wear resistance, and dimensional stability
• Straight flute design with right-hand cutting direction
• Straight cylindrical shank for secure chuck or collet mounting
• Bright, uncoated finish compatible with a wide range of cutting fluids
• 4-flute configuration for consistent chip clearance in small-bore applications

Compatibility

Designed as a standard chucking reamer for use in drill presses, CNC machining centers, manual lathes, and similar machine tools equipped with a chuck or collet capable of accepting a straight cylindrical shank at wire size 38 diameter.

Installation Notes

Chucking reamers are installed by licensed machinists or trained tool operators. Secure the straight shank firmly in a properly sized collet or drill chuck before use, and ensure the workpiece is rigidly fixtured to prevent movement during the reaming pass. Always pre-drill or bore the hole close to final diameter before reaming, and apply an appropriate cutting fluid to extend tool life and improve surface finish. Disengage the machine and allow all rotation to stop completely before removing the tool or measuring the bore.