Hertel 1000411 SPG421 HC210 Carbide Turning Insert

Product Description

The HERTEL 1000411 is a solid carbide turning insert in the SPG421 style, designed for precision metal turning applications on CNC lathes and manual turning centers. Manufactured to the HC210 grade and coated with titanium nitride (TiN) via a PVD process, this insert delivers improved wear resistance and extended tool life compared to uncoated carbide. It features a 90-degree square shape with a neutral hand orientation, a 0.5 inch inscribed circle, and a 1/64 inch (0.0156 inch) corner radius. It belongs to the KENDEX series and is held in place by a clamp-style toolholder. Installation and use are appropriate for machinists and tooling technicians working in production or job-shop environments.

This insert is suited for turning operations on stainless steel, non-ferrous metals, and superalloys, corresponding to ISO workpiece material groups M, N, and S, with secondary suitability for cast iron (group K). The SPG421 style and positive rake geometry make it well-matched for finish and semi-finish turning passes where controlled chip formation and surface quality are priorities. The maximum depth of cut is 1.25 mm (0.0492 inches), confirming its role in lighter, precision-oriented cuts rather than heavy roughing. Typical applications include shaft turning, facing, and contour work on mid-size CNC turning centers.

Key Features

• HC210 solid carbide grade with TiN coating applied via PVD process for improved surface hardness and wear resistance
• SPG421 insert style with positive rake geometry for reduced cutting forces
• Neutral hand orientation for flexible toolholder compatibility
• Square insert shape (90-degree included angle) with 1/64 inch corner radius for defined edge geometry
• Clamp-style holding method compatible with standard SPG toolholders
• Suitable for ISO material groups M, N, S (primary) and K (secondary)

Compatibility

Designed for use in clamp-style toolholders that accept SPG421 geometry inserts. Refer to your toolholder documentation to confirm insert pocket dimensions before installation. No specific toolholder model numbers were provided in the product data.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Power down and lock out the machine spindle before changing inserts. Seat the insert fully in the pocket and secure the clamp to the toolholder manufacturer's specified procedure before resuming cuts. Inspect the insert edge condition regularly; do not continue cutting with a chipped or worn edge, as this can damage the workpiece or toolholder.