Hertel 79890885 Chucking Reamer Wire 54 0.0550 in Carbide

Product Description

The HERTEL 79890885 is a solid carbide chucking reamer designed to produce precise, finished bores in metalworking applications. Built to wire size 54, this reamer cuts a 0.0550-inch diameter hole with a tolerance of 0.0000 to 0.0002 inches, making it suitable for tight-tolerance work where dimensional accuracy is critical. The 4-flute straight geometry provides clean, consistent material removal on the finish pass. With a 1.5-inch overall length and a 0.375-inch flute length, this compact tool is intended for shallow, accurate reaming in production and job-shop environments. Licensed machinists and toolroom professionals are the primary users.

This reamer is used in CNC machining centers, manual mills, and drill presses where a pre-drilled or bored hole requires final sizing to wire gauge 54. The straight cylindrical shank seats directly in a standard drill chuck or collet for quick changeover. Applications include precision hole finishing in steel, aluminum, brass, and other machinable metals where a close-fit bore is required for pins, dowels, or close-tolerance assemblies. The bright uncoated finish is standard for solid carbide at this diameter range.

Key Features

• Wire size 54 diameter: 0.0550 inches with tolerance of 0.0000 to 0.0002 inches
• Solid carbide construction for rigidity and wear resistance in precision boring
• 4-flute straight geometry for consistent stock removal on finish passes
• Straight cylindrical shank compatible with standard drill chucks and collets
• Bright uncoated finish — no coating buildup at this small diameter
• Right-hand cutting direction, standard orientation for conventional reaming

Compatibility

Designed as an OEM-style solid carbide chucking reamer for use in any machine tool setup that accepts a straight-shank tool at this diameter range, including CNC machining centers, knee mills, and drill presses with appropriate collet or chuck toolholding.

Installation Notes

A licensed machinist or toolroom technician should install and operate this reamer. Ensure the machine spindle is fully stopped and the tool is securely seated in the chuck or collet before starting the cut. Pre-drill or bore the hole to within appropriate stock allowance before reaming — do not attempt to use this reamer as a primary drilling tool. Follow shop safety protocols and applicable OSHA machine-guarding requirements when operating rotating cutting tools at this diameter.