Hertel 79889689 Carbide Chucking Reamer 0.158 in 4 Flute

Product Description

The HERTEL 79889689 is a solid carbide chucking reamer designed for precision hole finishing in machine shop and production environments. With a reamer diameter of 0.158 inches and a tight tolerance of 0.0000 to 0.0002 inches, it produces accurate, consistent bore sizes in a single pass. The straight-cylindrical shank seats securely in a drill chuck or collet, and the 4-flute straight flute geometry provides stable cutting action and smooth surface finish. Machinists and toolroom operators rely on this style of reamer for close-tolerance work in ferrous and non-ferrous materials. The bright, uncoated carbide construction suits general-purpose reaming where coolant and cutting oils are applied directly.

This chucking reamer is suited for use in CNC machining centers, manual mills, and drill presses where repeatable hole sizing is required. The 0.75-inch flute length accommodates shallow to moderate reaming depths, and the 2.5-inch overall length fits standard tooling setups. It is a right-hand cut tool intended for clockwise spindle rotation. Typical applications include production reaming of dowel pin holes, bearing bores, and precision fit holes in steel, aluminum, and similar workpiece materials.

Key Features

• Solid carbide construction for rigidity and wear resistance in abrasive or hard materials
• 0.158-inch nominal diameter with a tight tolerance of 0.0000 to 0.0002 inches for precision bore sizing
• 4-flute straight flute design delivers stable cutting and consistent surface finish
• Straight-cylindrical shank for direct mounting in a chuck or collet without adapters
• Bright, uncoated finish suitable for use with standard cutting fluids and coolants
• Right-hand cut geometry for standard clockwise spindle rotation

Compatibility

Designed as an OEM-style solid carbide chucking reamer for use in any machine tool spindle accepting a straight-cylindrical shank in the applicable diameter range.

Installation Notes

Installation and operation should be performed by a qualified machinist or toolroom technician. Secure the straight shank firmly in a precision drill chuck or collet and verify runout before cutting. Always apply appropriate cutting fluid or coolant for the workpiece material to maximize tool life and surface finish. Power down and lock out the machine spindle before changing or inspecting the tool.