Hertel 79890836 Chucking Reamer Wire 49 Solid Carbide

Product Description

The HERTEL 79890836 is a solid carbide chucking reamer designed for precision hole finishing in machining applications. Built to wire gauge size 49, it produces a finished bore diameter of 0.0730 inches with a tight tolerance of 0.0000 to 0.0002 inches, making it well suited for close-tolerance work where dimensional accuracy is critical. The four-flute straight design runs right-hand cut and is finished bright with no coating, preserving the sharp carbide edge. With an overall length of 1.75 inches and a flute length of 0.5 inches, this reamer is sized for compact bore depths in production and tool room environments.

This reamer is intended for use in CNC machining centers, drill presses, and manual lathes where a straight cylindrical shank is required for chuck or collet mounting. It is appropriate for reaming small-diameter through-holes and blind holes in materials that respond well to carbide tooling, including steel alloys, aluminum, and engineering plastics. Machinists and toolroom operators working in precision manufacturing, mold making, and general metalworking will find this tool applicable to finishing operations that require repeatable diameter control at sub-0.1-inch bore sizes.

Key Features

• Wire size 49 diameter (0.0730 inches) with tolerance held to 0.0000 to 0.0002 inches for precise bore finishing
• Solid carbide construction provides superior wear resistance and edge retention compared to high-speed steel
• Four straight flutes deliver smooth, consistent chip evacuation in short-flute applications
• Right-hand cutting direction compatible with standard machine spindle rotation
• Bright uncoated finish maintains sharp cutting geometry without added coating thickness
• Straight cylindrical shank mounts directly in standard drill chucks or collets without adapters

Compatibility

Designed as a standard chucking reamer for use in drill chucks, precision collets, and collet-style toolholders accepting a straight cylindrical shank at wire gauge size 49 (0.0730 inches).

Installation Notes

Installation and use should be performed by a qualified machinist or toolroom operator familiar with reaming operations and machine setup. Power down and lock out the machine spindle before mounting or removing the reamer from the chuck or collet. Ensure the shank is fully seated and the holding device is properly tightened before beginning the cut. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain bore finish quality.