Sandvik Coromant 7860868 Turning Insert CCMT432-UM 4425

Product Description

The SANDVIK COROMANT 7860868 is a CCMT-style turning insert designed for use in external and internal turning operations on CNC lathes and turning centers. It carries the ISO designation CCMT 12 04 08-UM 4425 and belongs to the CoroTurn 107 series. The insert features a CVD-applied multilayer coating of TiCN, Al2O3, and TiN over a solid carbide substrate, providing wear resistance and thermal protection during continuous and light-interrupted cuts. The 80-degree diamond shape delivers two cutting edges per insert, and the UM chip breaker geometry is engineered to control chip formation at a range of depths and feed rates.

This insert is suited for turning steel and cast iron workpieces in both production and job-shop environments. The neutral hand orientation makes it compatible with standard CCMT toolholders used on conventional and live-tooling setups. The 0.0313-inch corner radius supports general-purpose finishing and semi-finishing passes where surface finish and dimensional control are priorities. Machinists and tooling technicians working with ISO P and ISO K material groups will find this insert appropriate for those applications.

Key Features

• CVD multilayer coating: TiCN, Al2O3, and TiN for thermal and abrasion resistance
• 80-degree diamond insert shape (Code C) with 7-degree relief angle
• UM chip breaker geometry for controlled chip evacuation on steel and cast iron
• Two cutting edges per insert for extended tool life per unit
• Clamp and screw holding method compatible with standard CCMT toolholders
• Neutral hand orientation for versatile toolholder pairing

Compatibility

Designed as an OEM-style replacement insert for CCMT 12 04 08 toolholders in the CoroTurn 107 series. No additional specific compatible model numbers were provided in the product data.

Installation Notes

Insert installation and indexing should be performed by a qualified machinist or tooling technician with the machine spindle stopped and all motion fully arrested. Use the appropriate torx or hex key to seat the clamp or screw to the toolholder manufacturer's recommended procedure. Inspect the insert pocket and seating surface for chips or debris before seating a new insert. Never exceed the insert's rated cutting parameters as defined in the applicable tooling catalog.