Sandvik Coromant 8019370 Turning Insert Vbmt 16 04 08-PMC 4425

Product Description

The SANDVIK COROMANT 8019370 is a VBMT-style solid carbide turning insert designed for precision metal cutting on CNC lathes and turning centers. Carrying the ISO designation VBMT 16 04 08-PMC 4425, this insert features a CVD-applied multilayer coating of TiCN, Al2O3, and TiN that delivers wear resistance and thermal stability during continuous and interrupted steel cuts. The inscribed circle measures 0.375 inches with a corner radius of 0.0313 inches, making it suited to moderate finishing and semi-finishing passes. The neutral hand orientation and PMC chip breaker geometry support controlled chip formation. Licensed machinists and CNC operators specify this grade for its consistent edge life on steel workpieces.

This insert is intended for turning operations on steel workpieces, aligning with primary material classification for steel and secondary material code K. The VBMT 16 04 08-PMC 4425 is a member of the VBMT-PMC series, a geometry optimized for medium to light chip loads on external and internal turning profiles. It is suited to both production shop environments and job-shop applications where reliable tool life on carbon and alloy steels is a priority. The clamp and screw holding method provides secure seating in compatible VBMT toolholders. This insert is sold individually per package with a minimum order quantity of 10 units.

Key Features

• CVD multilayer coating: TiCN, Al2O3, and TiN for extended wear resistance and heat management
• PMC chip breaker geometry designed for controlled chip formation on steel
• 0.375-inch inscribed circle and 0.0313-inch corner radius for semi-finish to finish turning
• Neutral hand orientation compatible with both left- and right-hand tooling setups
• Relief angle of 5 degrees with clearance code B and tolerance code M per ISO insert standards
• Clamp and screw holding method for positive insert retention in the toolholder pocket

Compatibility

Designed for use in VBMT-compatible turning toolholders that accept a V-shape (35-degree diamond) insert with clamp or screw retention. Primary workpiece material is steel; secondary workpiece material code K indicates suitability for cast iron applications as well. Refer to toolholder documentation to confirm pocket geometry and insert seating requirements before installation.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician following the toolholder manufacturer's torque and clamping specifications for VBMT inserts. Power down and lock out the machine spindle before changing inserts. Inspect the toolholder pocket for wear, debris, or damage before seating the new insert, as a contaminated pocket will affect edge geometry and tool life. Handle carbide inserts carefully to avoid chipping the cutting edges prior to use.