Hertel 79889010 Chucking Reamer 0.068 in Solid Carbide

Product Description

The HERTEL 79889010 is a solid carbide chucking reamer designed for precision hole finishing in tight-tolerance applications. With a reamer diameter of 0.068 inches and a diameter tolerance of 0.0000 to 0.0002 inches, it delivers consistent, accurate results in production and toolroom environments. The 4-flute straight flute geometry provides smooth cutting action and efficient chip evacuation in through-hole and blind-hole finishing operations. The bright uncoated finish suits general-purpose use across a range of workpiece materials. At 1.75 inches overall length with a 0.5-inch flute length, this reamer is sized for small-diameter, short-depth applications requiring high positional accuracy.

This chucking reamer is suited for use in CNC machining centers, manual mills, and drill presses where a straight-cylindrical shank can be clamped in a collet, chuck, or floating reamer holder. Right-hand cutting direction is standard for conventional machine setups. Typical applications include finishing pre-drilled holes in steel, aluminum, brass, and similar machinable materials where close tolerances and smooth surface finish are required. It is used by machinists, toolroom technicians, and precision manufacturing operations working with small-diameter bores.

Key Features

• Solid carbide construction for rigidity and wear resistance in precision reaming
• 4-flute straight flute design for smooth cutting and chip clearance
• Tight diameter tolerance of 0.0000 to 0.0002 inches for close-fit hole finishing
• Straight-cylindrical shank for compatibility with standard collets and chucks
• Bright uncoated finish suitable for general-purpose machining applications
• Right-hand cutting direction for standard machine spindle setups

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide chucking reamer for standard straight-shank toolholding systems accepting small-diameter straight-cylindrical shanks.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Secure the straight-cylindrical shank firmly in a collet, drill chuck, or floating reamer holder before operation, and verify runout with a dial indicator if tolerance-critical work is required. Always pre-drill or bore the hole to the appropriate undersize before reaming. Do not use this tool as a drill; reaming is a finishing operation only.