Hertel 79890505 Chucking Reamer Wire Size 12 Solid Carbide

Product Description

The HERTEL 79890505 is a solid carbide chucking reamer designed to finish-ream holes to a precise wire size 12 diameter of 0.1890 inches. Built with a straight flute geometry and a straight cylindrical shank, this reamer delivers controlled material removal in through-hole and blind-hole applications where tight dimensional tolerances are required. The bright, uncoated carbide construction provides rigidity and wear resistance in a compact overall length of 2.75 inches. With four flutes and a flute length of 0.875 inches, it maintains consistent chip evacuation and surface finish. Machinists and tool-and-die professionals install this reamer in CNC machining centers, drill presses, and manual lathes using standard chuck toolholding.

This reamer is suited for precision hole finishing in metalworking operations where a wire gauge hole must meet close tolerances. The 0.1890-inch nominal diameter with a tolerance of 0.0000 to 0.0002 inches makes it appropriate for fitting dowel pins, bushings, and close-tolerance hardware in tool rooms and production machining environments. Its compact size fits both light machine work and bench operations requiring fine hole sizing in steel, aluminum, and similar materials.

Key Features

• Wire size 12 nominal diameter of 0.1890 inches with a tolerance of 0.0000 to 0.0002 inches for precise hole finishing
• Solid carbide construction for rigidity and extended tool life in metalworking applications
• Four straight flutes for consistent chip flow and smooth bore surface finish
• Straight cylindrical shank compatible with standard drill chucks and collet toolholding
• Bright, uncoated finish suitable for use with cutting fluids across a range of workpiece materials
• Right-hand cutting direction for conventional clockwise spindle operation

Compatibility

Designed as an OEM-style chucking reamer for use in standard straight-shank chuck toolholding systems on CNC machining centers, drill presses, and manual lathes requiring wire size 12 hole finishing.

Installation Notes

Installation is performed by qualified machinists familiar with rotating cutting tool setup and machine tool operation. Secure the straight shank firmly in a drill chuck or collet before operation, and verify runout before engaging the workpiece. Apply appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish. Never exceed the recommended spindle speed for the material and tool diameter, and always bring the spindle to a complete stop before removing or adjusting the tool.