Hertel 79890281 Chucking Reamer 9/32 in Solid Carbide

Product Description

The HERTEL 79890281 is a solid carbide chucking reamer designed for precision hole finishing in metalworking and machining applications. Built with a straight flute geometry and a straight cylindrical shank, this reamer delivers a bright, uncoated finish and holds a diameter tolerance of 0.0000 to 0.0003 inches. At 0.2812 inches (9/32 inches) in diameter with a 3-1/4-inch overall length and a 1-1/8-inch flute length, it fits standard chuck-style toolholders and is suited for CNC machining centers, drill presses, and manual mills. The six-flute configuration promotes smooth cutting and accurate bore sizing in production environments.

This reamer is used in precision machining operations where tight bore tolerances are required. It is appropriate for ferrous and non-ferrous metals in both job shop and production settings. The right-hand cutting direction and straight flute design make it a reliable choice for through-holes and blind holes where chip evacuation is manageable. Machinists and tool-and-die professionals typically deploy this tool when a drilled hole must be brought to final diameter with consistent, repeatable accuracy.

Key Features

• Solid carbide construction for hardness and wear resistance in demanding cuts
• Diameter tolerance of 0.0000 to 0.0003 inches for precise bore sizing
• Six straight flutes for smooth material removal and consistent finish
• Bright, uncoated surface finish — no coating buildup to affect diameter
• Straight cylindrical shank for secure seating in standard chuck toolholders
• Right-hand cutting direction compatible with standard spindle rotation

Compatibility

Designed as an OEM-style solid carbide chucking reamer for use in standard chuck-style toolholders accepting a straight cylindrical shank at 9/32-inch nominal diameter.

Installation Notes

Installation is performed by machinists using a standard drill chuck or collet chuck on a mill, drill press, or CNC machining center. Ensure the machine spindle is fully stopped and the toolholder is clean and free of debris before seating the shank. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain bore finish quality. Follow shop safety protocols and machine manufacturer guidelines when setting spindle speed and feed rate for reaming operations.