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The HERTEL HTVCMX333420CD is a Polycrystalline Diamond (PCD) turning insert designed for precision metal cutting operations on CNC lathes and turning centers. Built to the HT-VCMX insert style with a diamond (V) shape and grade HT420CD, this insert is supplied uncoated and relies on the inherent hardness of the PCD substrate for cutting performance. The inscribed circle measures 3/8 inches (0.3750 inches), the insert thickness is 3/16 inches (0.1875 inches), and the corner radius is 3/64 inches (0.0469 inches). It uses a screw-type holding method and carries a clearance code of C, tolerance code of M, and chip breaker code X. Machinists and CNC operators working with non-ferrous metals, composites, and high-silicon aluminum will find this insert suited to demanding finishing and semi-finishing passes.
This insert is intended for use in turning applications where tight tolerances and long tool life are required. PCD inserts are commonly specified for high-speed turning of non-ferrous materials including aluminum alloys, copper, brass, carbon fiber composites, and similar abrasion-resistant workpieces. The HT-VCMX style seats into standard VCMX-compatible toolholders, making it a practical replacement option in production turning environments. Sold individually, it is appropriate for job shops, production facilities, and tool crib restocking.
Designed for use in standard HT-VCMX style toolholders that accept a V-shape insert with a 3/8 inch inscribed circle, clearance code C, tolerance code M, and screw-type holding. Confirm toolholder compatibility using the full insert style designation HT-VCMX before ordering.
Insert seating and clamping should be performed by a qualified machinist or CNC tooling technician. Ensure the machine spindle is fully stopped and the machine is placed in a safe state before changing inserts. Use the appropriate torx or hex key to torque the clamping screw to the toolholder manufacturer's specified value — do not overtighten. PCD inserts are brittle and should not be used on ferrous metals or interrupted cuts unless specifically rated for those applications.
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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