Kyocera TSJ03150 Turning Insert VBMT221GP TN60 Cermet

Product Description

The KYOCERA TSJ03150 is a cermet turning insert in the VBMT221GP configuration, designed for precision metal cutting in CNC and manual turning applications. It carries the TN60 manufacturer grade and features a GP chip breaker geometry with a positive rake angle of 10 degrees. The insert is uncoated cermet with a TiCN and NbC coating classification, offering a honed cutting edge style. With a 35-degree diamond shape, 0.25-inch inscribed circle, and a corner radius of 0.0156 inches (1/64 inch), it delivers controlled chip formation during high-precision turning passes. Licensed HVAC techs, machinists, and CNC operators working in steel and stainless steel applications will find this insert well-suited for finishing and semi-finishing work.

This insert is rated primarily for steel (ISO material code P) and secondarily for stainless steel (ISO material code M), with material grades P01, P10, and P20. It supports a wide range of turning operations including external turning, facing, copying, profiling, back boring, internal facing, and undercutting. The insert length is 0.872 inches, thickness is 0.125 inches, and the maximum depth of cut is 0.2907 inches. It mounts via screw-hold method and is part of the ISOI series. The ISO code is VBMT110304GP and the industry standard number is VBMT221GPTN60.

Key Features

• 35-degree diamond insert shape (Shape Code V) for precision turning and profiling
• TN60 cermet grade with honed cutting edge for clean finishes on steel and stainless steel
• GP chip breaker geometry with positive 10-degree rake angle for efficient chip control
• Screw-lock insert holding method for secure, repeatable positioning in compatible toolholders
• Supports multiple operations: external turning, facing, copying, profiling, back boring, and undercutting
• Meets ANSI and ISO standards; ISO code VBMT110304GP

Compatibility

Designed as a standard VBMT-style screw-on turning insert compatible with VBMT toolholders per ANSI and ISO dimensional standards. Primary workpiece material is steel (P-grade); secondary workpiece material is stainless steel (M-grade). Material grades P01, P10, and P20 apply.

Installation Notes

Installation is performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine before changing inserts. Use the appropriate torx or hex key to secure the clamp screw to the toolholder specification — do not overtighten, as cermet is brittle and can fracture under excessive clamping force. Inspect the insert seat and clamp for debris before seating the new insert.