Hertel 1000398 Turning Insert SPG633 HC335 Carbide

Product Description

The HERTEL 1000398 is a solid carbide turning insert in the SPG633 style, designed for precision metal-cutting operations on CNC and manual lathes. It carries a multilayer CVD coating of TiC, TiCN, and TiN under the HC335 manufacturer grade, providing wear resistance and thermal stability across a range of workpiece materials. The insert features a 3/4 inch inscribed circle, a 3/64 inch corner radius, a 90-degree square shape, and an 11-degree relief angle with a positive rake geometry. It is installed by machinists and toolroom technicians in production and job-shop turning applications.

This insert is suited for turning ferrous and stainless workpiece materials, corresponding to ISO material groups P and M. The neutral hand orientation makes it compatible with both left- and right-hand toolholders. The KENDEX series designation and SPG633 style code indicate use in clamp-style toolholders with a P tolerance and G clearance code. Typical applications include roughing and semi-finishing passes where controlled chip flow and edge integrity are required. Maximum depth of cut is 0.0492 inch (1.25 mm).

Key Features

• Solid carbide substrate with CVD-applied TiC, TiCN, and TiN multilayer coating for extended tool life
• HC335 grade rated for ISO P and M workpiece materials including steel and stainless steel
• 3/4 inch inscribed circle with 90-degree square insert shape for versatile toolholder compatibility
• 3/64 inch (0.0470 inch) corner radius suitable for moderate finishing and semi-roughing operations
• Positive rake geometry with 11-degree relief angle reduces cutting forces on the workpiece
• Clamp-style holding method with no chip breaker (style code N) for straightforward insert seating

Compatibility

Designed for use in clamp-style SPG-seat toolholders conforming to the KENDEX series SPG633 insert style. Tolerance code G and clearance code P apply. Verify toolholder seat and clamping system specifications before installation.

Installation Notes

This insert is installed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before changing inserts. Seat the insert fully against the toolholder pocket walls and verify clamp torque per the toolholder manufacturer's specification. Inspect the insert seat and clamp for debris or damage before each index to maintain dimensional accuracy and prevent premature edge failure.