Hertel 79889036 Chucking Reamer 0.071 in Solid Carbide

Product Description

The HERTEL 79889036 is a solid carbide chucking reamer designed for precision hole finishing in machining applications. With a reamer diameter of 0.071 inches and a diameter tolerance of 0.0000 to 0.0002 inches, this tool delivers tight, repeatable bore accuracy in a single pass. The four-flute straight configuration and bright uncoated carbide construction make it well suited for finishing operations in ferrous and non-ferrous materials where hole quality and dimensional consistency are critical. The straight cylindrical shank seats securely in standard drill chucks and collet-style toolholding systems.

This reamer is intended for use in CNC machining centers, drill presses, and manual machine tools where small-diameter precision reaming is required. The 0.5-inch flute length accommodates shallow through-holes and blind bores typical of precision component manufacturing, mold and die work, and instrument-grade part production. It is installed and operated by machinists and toolroom professionals working to close-tolerance specifications.

Key Features

• Solid carbide construction provides rigidity and wear resistance in small-diameter reaming
• 0.071-inch diameter with a tolerance of 0.0000 to 0.0002 inches for tight bore control
• Four straight flutes for smooth cutting action and consistent chip evacuation
• Bright uncoated finish suitable for a broad range of workpiece materials
• Straight cylindrical shank compatible with standard chucks and collets
• Right-hand cutting direction, standard for conventional reaming setups

Compatibility

Designed as an OEM-style replacement and standard chucking reamer for precision machining operations requiring a 0.071-inch finished bore diameter.

Installation Notes

Install and remove this reamer with the spindle fully stopped and the machine powered down. Secure the straight shank in a collet or drill chuck to the appropriate engagement depth before beginning the cut. Use the correct cutting fluid or coolant for the workpiece material to prevent built-up edge and extend tool life. Follow shop-specific speeds and feeds for solid carbide tooling in small-diameter reaming applications.