Hertel MR34-0697.406 Chucking Reamer 1.77mm Solid Carbide

Product Description

The HERTEL MR34-0697.406 is a solid carbide chucking reamer designed for precision hole finishing in tight-tolerance machining applications. With a reamer diameter of 1.77 mm (0.0697 inches) and a diameter tolerance of 0.0000 to +0.0003 mm, this tool delivers consistent, accurate results in small-bore work. The overall length is 50 mm (1.969 inches) with a 10 mm flute length. Four spiral flutes with a left-hand spiral direction and right-hand cutting action help evacuate chips efficiently while maintaining a smooth finish. The bright polished coating reduces friction and aids in chip flow during the cut. This reamer is suited for machinists and tool-and-die professionals working with precision bores in metals and engineered materials.

This chucking reamer is used in CNC machining centers, lathes, and drill presses where precise hole sizing is required after drilling. The straight shank allows it to seat in standard collet chucks and drill chucks without modification. It is well suited for small-diameter bore finishing in production and job-shop environments where tight tolerances and repeatable results are critical. The solid carbide construction makes it appropriate for harder materials and high-cycle applications where high-speed steel tooling would wear prematurely.

Key Features

• 1.77 mm (0.0697 inches) reamer diameter with tolerance of 0.0000 to +0.0003 mm for precision hole sizing
• Solid carbide construction for durability and wear resistance in hard materials
• Four spiral flutes with left-hand spiral and right-hand cutting direction for efficient chip evacuation
• 50 mm overall length with 10 mm flute length for small-bore finishing reach
• Bright polished coating reduces friction and aids chip flow
• Straight shank for compatibility with standard collet and drill chucks

Compatibility

Designed as a straight-shank chucking reamer for use in standard collet chucks and drill chucks on CNC machining centers, lathes, and drill presses requiring small-diameter precision bore finishing.

Installation Notes

Installation and use of this reamer should be performed by qualified machinists familiar with precision boring operations. Ensure the machine spindle and chuck are fully secured before running the tool. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain surface finish. Do not exceed the recommended feed and speed parameters for carbide tooling in the material being machined.