Hertel MR34-0642.406 Chucking Reamer 1.63mm Solid Carbide

Product Description

The HERTEL MR34-0642.406 is a solid carbide chucking reamer designed to finish-ream precision holes to a 1.63 mm diameter. Solid carbide construction provides the rigidity and wear resistance required for tight-tolerance work in hardened steels, cast iron, aluminum, and similar materials. The spiral flute geometry — with a left-hand spiral and right-hand cut — promotes smooth chip evacuation and reduces chatter during through-hole reaming. With a 10 mm flute length and a 50 mm overall length, this tool is sized for small-bore work where dimensional accuracy is critical. It is used by machinists and toolroom technicians in CNC and manual machine applications.

This chucking reamer is suited for precision hole-finishing operations in machine shops, tool-and-die environments, and production floor settings. The straight shank mounts directly into standard collet chucks, drill chucks, or reamer holders. With a diameter tolerance of 0.0000 to +0.0003 mm, it is appropriate for close-fit applications such as dowel pin holes, bearing bores, and hydraulic component passages where finish and size are held to tight specifications.

Key Features

• Solid carbide construction for rigidity and extended tool life in abrasive and hardened materials
• Left-hand spiral flute with right-hand cut for smooth chip flow and reduced chatter
• 1.63 mm reaming diameter with a tolerance of 0.0000 to +0.0003 mm for precision hole sizing
• 4 flutes for consistent surface finish and stable cutting geometry
• Straight shank for compatibility with standard collet chucks and reamer holders
• Bright uncoated finish — no coating buildup that could affect final hole diameter

Compatibility

Designed as a straight-shank chucking reamer for use in CNC machining centers, manual mills, and drill presses equipped with collet chucks or drill chucks accepting a straight shank in the 1.63 mm diameter range.

Installation Notes

This tool is installed and operated by machinists and toolroom technicians. Secure the straight shank firmly in a collet chuck or reamer holder before use, and verify runout with an indicator prior to cutting. Machine the pilot hole to the correct pre-ream diameter before running the reamer — never use a chucking reamer to remove excessive stock. Apply appropriate cutting fluid for the workpiece material to extend tool life and maintain hole finish.