Hertel MR34-0441.406 Chucking Reamer 0.0441 in Solid Carbide

Product Description

The HERTEL MR34-0441.406 is a solid carbide chucking reamer designed for precision hole finishing in tight-tolerance applications. With a reamer diameter of 0.0441 inches (1.12 mm) and a diameter tolerance of 0.0000 to +0.0003 mm, this tool delivers consistent, accurate results where dimensional control is critical. The overall length is 1.9685 inches (50.00 mm) with a flute length of 0.7087 inches (18.00 mm). It features four flutes with a left-hand spiral and cuts in a right-hand direction. The bright polished finish reduces friction and aids chip evacuation. This reamer is intended for use by machinists and tooling professionals working in precision manufacturing environments.

This chucking reamer is suited for finishing drilled or bored holes to close tolerances in small-diameter applications. The 0.0441-inch diameter places it in the micro-tooling range, making it appropriate for applications such as instrument components, medical device parts, electronic hardware, and other precision machined components where hole quality and roundness are essential. It accepts a straight shank and is intended for use in drill chucks or collet-style holders on lathes, milling machines, and CNC machining centers.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard or abrasive materials
• Reamer diameter of 0.0441 inches (1.12 mm) with tolerance of 0.0000 to +0.0003 mm
• Four-flute left-hand spiral design with right-hand cutting direction
• Bright polished finish minimizes tool-workpiece friction and aids chip flow
• Straight shank compatible with standard drill chucks and collet holders
• Overall length of 1.9685 inches with 0.7087-inch flute length for compact reach in small bores

Compatibility

Designed as an OEM-style chucking reamer for use in standard straight-shank drill chucks and collet holders on lathes, milling machines, and CNC machining centers accepting micro-diameter tooling.

Installation Notes

Chucking reamers of this diameter should be mounted in a precision collet or drill chuck to minimize runout before use. Ensure the machine spindle and workpiece are secured before operation. Apply appropriate cutting fluid for the workpiece material to extend tool life and maintain bore finish quality. Reamers in this micro-diameter range are fragile — do not apply side loads or use them to enlarge holes beyond their designed tolerance range.