Sandvik Coromant 8019563 Turning Insert SPMR120304 4425

Product Description

The SANDVIK COROMANT 8019563 is a solid carbide turning insert carrying ISO designation SPMR 12 03 04-53 4425. It features a square insert shape with a positive side clearance and an 11-degree relief angle. The CVD-applied multilayer coating stack — TiCN, Al2O3, and TiN — delivers high wear resistance suited to finishing operations on steel workpieces. With a 0.5-inch inscribed circle and a 0.0156-inch corner radius, this insert is sized for light finishing passes where edge integrity and surface finish are the priority. It is installed by machinists and CNC lathe operators in production and job-shop environments.

This insert is designed for finishing operations on steel (ISO P) as the primary workpiece material, with cast iron (ISO K) as a secondary application. The 4425 grade is characterized as high wear-resistance to moderate wear-resistance and toughness, making it well matched to continuous cuts on low-to-medium alloy steels. The SPMR-53 series chip breaker geometry supports controlled chip formation at finishing parameters. It is clamp-held in compatible toolholders and suits both manual and CNC turning centers.

Key Features

• CVD multilayer coating: TiCN base, Al2O3 mid-layer, TiN top coat for wear resistance and heat control
• Square insert shape (S) with positive side clearance for reduced cutting forces
• 11-degree relief angle reduces rubbing on finished surfaces
• 0.0156-inch corner radius optimized for fine surface finish on finishing passes
• 53 chip breaker geometry designed for finishing operations
• Grade 4425: balances wear resistance and toughness for steel turning

Compatibility

Designed for use in clamp-style toolholders accepting SPMR square turning inserts with an ANSI size code of 421 and ISO size code 120304. Compatible with toolholders spec'd for 0.5-inch inscribed circle, 0.125-inch thick square inserts with positive clearance geometry.

Installation Notes

Installation is performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully stopped and the turret is de-energized before seating or removing inserts. Use the appropriate clamp screw torque specified by the toolholder manufacturer — do not over-torque, as this can chip the carbide edge. Inspect the insert pocket and clamp for wear or debris before seating a new insert.