Hertel MR34-0382.281 Chucking Reamer 0.97mm Solid Carbide

Product Description

The HERTEL MR34-0382.281 is a solid carbide chucking reamer engineered for precision hole finishing in tight-tolerance applications. With a 0.97 mm reamer diameter and a diameter tolerance of 0.0000 to +0.0003 mm, this tool delivers consistent, accurate results in materials that demand rigid cutting geometry. The spiral flute design with left-hand spiral direction promotes smooth chip evacuation while the right-hand cutting action maintains controlled engagement. At 50 mm overall length with a 7 mm flute length, this reamer is suited for shallow-depth finishing passes. Machinists and tool-room professionals use this type of reamer in CNC and manual machine setups where bore quality and repeatability are critical.

This chucking reamer is intended for precision finishing operations in production and tool-room environments. The straight shank design allows it to seat directly in collets, drill chucks, or floating reamer holders. The bright polished finish reduces friction and built-up edge in fine-finish reaming passes. At sub-1 mm diameter, this tool is typically deployed in watch components, medical device machining, electronics assemblies, and similar small-part manufacturing where micro-bore tolerances are essential. It is sold individually and is appropriate for both manual and CNC-controlled spindles.

Key Features

• Solid carbide construction provides rigidity and wear resistance at small diameters
• 0.97 mm reamer diameter with tolerance of 0.0000 to +0.0003 mm for precision bore finishing
• Left-hand spiral flute with right-hand cut promotes chip ejection and smooth surface finish
• 4-flute geometry balances cutting load and finish quality
• Bright polished coating reduces friction and heat buildup during finishing passes
• Straight shank is compatible with standard collets, drill chucks, and floating holders

Compatibility

Designed as an OEM-style chucking reamer for use in CNC machining centers, manual mills, and drill presses equipped with collet or chuck systems accepting straight-shank tooling at sub-1 mm diameters.

Installation Notes

Installation and use should be performed by qualified machinists familiar with precision reaming procedures. Ensure the spindle and workpiece are properly secured and that the bore is pre-drilled to the correct undersize before reaming. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain surface finish. At this diameter, excessive feed rates or runout in the spindle can cause tool breakage — verify holder runout before use.