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The HERTEL 2058378 is a high-speed steel (HSS) chucking reamer designed for precision hole finishing in metalworking applications. It carries a TiCN (titanium carbonitride) coating that improves surface hardness and wear resistance compared to uncoated HSS. With a 0.5000-inch diameter, an 8-inch overall length, and a 2-inch flute length, this reamer is built for machine-fed reaming operations where tight bore tolerances and smooth surface finishes are required. The 6-flute, right-hand spiral configuration provides stable cutting action and efficient chip evacuation during through-hole and blind-hole finishing passes.
This chucking reamer is suited for use in CNC machining centers, drill presses, and lathes across production and job-shop environments. It is intended for finishing pre-drilled or bored holes in steel, cast iron, aluminum, and similar machinable materials where dimensional accuracy is critical. The straight cylindrical shank allows direct mounting in standard drill chucks, collet chucks, or floating reamer holders. Machinists and tool-and-die professionals specify this type of reamer when bore size must be held to close tolerances after rough drilling.
Designed as an OEM-style chucking reamer compatible with standard straight-shank toolholding systems including drill chucks and collet chucks used in CNC machining centers, knee mills, drill presses, and lathes.
Installation and use of this reamer should be performed by qualified machinists familiar with cutting tool setup and machine operation. Ensure the spindle is fully stopped and the machine is powered down before mounting or removing the tool from the holder. Use appropriate cutting fluid or coolant for the workpiece material to maximize tool life and surface finish quality. Verify runout and chuck concentricity before reaming to maintain bore tolerance.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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