Hertel MR34-0909.438 Chucking Reamer 2.31mm Solid Carbide

Product Description

The HERTEL MR34-0909.438 is a solid carbide chucking reamer designed for precision hole finishing in metalworking and machining applications. With a 2.31 mm reamer diameter and a tight tolerance of 0.0000 to +0.0003 mm, this tool delivers accurate, repeatable bore sizing in production and job-shop environments. The 4-flute spiral configuration with a left-hand spiral direction and right-hand cutting action promotes smooth chip evacuation and a clean finish. At 50 mm overall length with an 11 mm flute length, the reamer is suited for shallow-to-moderate depth reaming passes. Machinists and tool-and-die professionals working in precision CNC or manual drilling setups are the primary users.

This reamer is intended for use in machine tool applications requiring close-tolerance bore finishing, typically in ferrous and non-ferrous metals. The straight shank design allows direct mounting in standard collet chucks, drill chucks, or floating reamer holders. The bright uncoated solid carbide construction makes it a practical choice for dry or flood-coolant operations where carbide hardness and thermal resistance are required. Typical applications include finishing pre-drilled or bored holes in die sets, fixtures, and precision components where dimensional accuracy is critical.

Key Features

• 2.31 mm reamer diameter with tolerance of 0.0000 to +0.0003 mm for precision bore sizing
• Solid carbide construction for hardness and wear resistance in demanding machining operations
• 4-flute spiral flute geometry with left-hand spiral and right-hand cut for smooth chip flow
• Bright uncoated finish suitable for dry or flood-coolant machining environments
• Straight shank compatible with standard collet chucks and floating holders
• 50 mm overall length with 11 mm flute length for controlled shallow-to-moderate depth passes

Compatibility

Designed as a chucking reamer for use in CNC machining centers, drill presses, and manual lathes equipped with standard straight-shank tool holders and collet chuck systems accepting 2.31 mm diameter tools.

Installation Notes

Installation and use should be performed by qualified machinists familiar with precision reaming operations. Ensure the machine spindle is fully stopped and the tool holder is secure before mounting or removing the reamer. Use appropriate speeds and feeds per the workpiece material; carbide tooling is sensitive to interrupted cuts and side loading. Handle solid carbide tools carefully to avoid chipping the cutting edges during setup and storage.