Hertel 79888855 Chucking Reamer 0.049 in Solid Carbide

Product Description

The HERTEL 79888855 is a solid carbide chucking reamer designed for precision hole finishing in tight-tolerance machining applications. With a reamer diameter of 0.049 inches and a diameter tolerance of 0.0000 to 0.0002 inches, this tool delivers accurate, repeatable results in small-bore work. The straight flute geometry and right-hand cutting direction make it well-suited for general reaming in a variety of workpiece materials. Overall length is 1.5 inches with a flute length of 0.375 inches. Machinists and tool-and-die professionals specify solid carbide construction for its rigidity and wear resistance in precision applications.

This chucking reamer is intended for use in CNC machining centers, drill presses, and manual mills where a straight-cylindrical shank is required. The 0.049-inch diameter places it in the micro-bore range, making it appropriate for small-diameter hole sizing in instrument components, precision fixtures, and similar work. The uncoated bright finish is standard for carbide reamers where surface adhesion and chip welding are not primary concerns. Four flutes provide balanced cutting action and good surface finish in the final pass of a machining sequence.

Key Features

• Solid carbide construction for rigidity and extended tool life in precision boring
• Four straight flutes with right-hand cutting direction for balanced material removal
• Diameter tolerance of 0.0000 to 0.0002 inches for tight-tolerance hole finishing
• Straight-cylindrical shank for direct chuck mounting without adapters
• Bright uncoated finish suitable for a wide range of base materials
• Micro-bore diameter of 0.049 inches for small-diameter hole applications

Compatibility

Designed as a straight-shank chucking reamer for use in any machine tool spindle or chuck accepting a straight-cylindrical shank in the corresponding diameter range.

Installation Notes

This reamer is installed by a machinist or toolroom professional using a standard drill chuck or collet that accommodates the straight shank diameter. Ensure the workpiece is securely fixtured and the spindle is running at the correct RPM for the material and reamer diameter before engaging the cut. Always pre-drill or bore the hole to the recommended undersize before reaming to avoid overloading the flutes. Do not use this tool as a drill; it is a finishing tool only.