Hertel MR34-0098.059 Chucking Reamer 0.0098 in Carbide

Product Description

The HERTEL MR34-0098.059 is a solid carbide chucking reamer designed for precision hole finishing in tight-tolerance applications. With a reamer diameter of 0.0098 inches (0.25 mm) and an overall length of 1.9685 inches (50 mm), this tool is built for micro-diameter reaming where dimensional accuracy is critical. The 4-flute left-hand spiral geometry with right-hand cutting direction promotes smooth chip evacuation and reduces chatter at small diameters. A bright polished finish minimizes friction and helps maintain bore surface finish. This reamer is installed by machinists, toolroom technicians, and precision metalworking professionals.

This chucking reamer is suited for use in CNC machining centers, drill presses, and manual lathes where a straight shank chuck or collet holder is used. The 0.0098-inch diameter makes it appropriate for micro-bore finishing in materials where solid carbide rigidity is required to hold tolerance. Typical applications include watchmaking components, medical device parts, electronics hardware, and other precision assemblies requiring a reamed hole at or near 0.0098 inches with a diameter tolerance of 0.0000 to +0.0003 mm.

Key Features

• Solid carbide construction provides rigidity and wear resistance at micro diameters
• 4-flute left-hand spiral geometry with right-hand cutting direction for smooth chip flow
• Bright polished coating reduces friction and supports fine bore surface finish
• Straight shank fits standard collets and drill chucks without additional adapters
• Diameter tolerance of 0.0000 to +0.0003 mm supports tight-tolerance hole finishing
• Flute length of 0.059 inches (1.50 mm) optimized for shallow micro-bore reaming

Compatibility

Designed as an OEM-style precision chucking reamer for use in standard straight-shank collet systems and drill chucks on CNC or manual machine tools requiring a 0.0098-inch diameter reamed bore.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. Secure the straight shank in a properly sized collet or drill chuck and ensure runout is minimized before operation, as micro-diameter reamers are sensitive to misalignment. Power down and lock out the machine spindle before changing or inspecting the tool. Do not force feed or use excessive speeds, as solid carbide tools at this diameter can fracture under lateral load.