Hertel MR34-0358.281 Chucking Reamer 0.0360 in Carbide

Product Description

The HERTEL MR34-0358.281 is a solid carbide chucking reamer designed for precision hole finishing in metalworking and machining applications. Built to a 0.0360-inch (No. 64 wire gauge) diameter with a tight tolerance of 0.0000 to +0.0003 mm, this reamer delivers consistent bore sizing in hardened and difficult-to-machine materials. The 4-flute spiral design with left-hand spiral direction and right-hand cutting action promotes smooth chip evacuation and reduces chatter during the cut. The bright, uncoated finish suits a broad range of materials without added coating cost. Machinists and tool-and-die professionals install this reamer in CNC machining centers, drill presses, and manual lathes wherever repeatable, close-tolerance bore finishing is required.

This reamer is suited for small-diameter precision reaming operations in production and job-shop environments. With a 50.00 mm (1.9685 inches) overall length and a 7.00 mm flute length, the MR34-0358.281 is optimized for shallow, tight-tolerance holes in the sub-1.00 mm diameter range. The straight-cylindrical shank seats cleanly in standard collet chucks and drill chucks. Typical applications include reaming holes in instrument components, small mechanical assemblies, watch-gear fixtures, and precision medical or aerospace parts where bore finish and diameter accuracy are critical.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard or abrasive materials
• No. 64 wire gauge diameter (0.0360 inches) with tolerance of 0.0000 to +0.0003 mm for precise bore sizing
• 4-flute left-hand spiral, right-hand cutting geometry promotes efficient chip flow and smooth finish
• Bright, uncoated finish — no coating degradation risk in sensitive or reactive workpiece materials
• Straight-cylindrical shank for direct seating in collet chucks and standard drill chucks
• Compact 50.00 mm overall length suits confined setups and short-reach spindle configurations

Compatibility

Designed as an OEM-style chucking reamer for use in standard straight-shank collet chucks and drill chucks accepting small-diameter straight-cylindrical shanks in CNC and manual machining equipment.

Installation Notes

This reamer is installed by machinists in machine tool spindles equipped with a compatible collet or drill chuck. Ensure the machine spindle and workpiece are properly secured before engaging the reamer. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain bore finish quality. Follow shop safety procedures and machine manufacturer guidelines when setting speeds and feeds for carbide tooling in small diameters.