Sandvik Coromant 7860814 Turning Insert CCMT432-PM 4425

Product Description

The SANDVIK COROMANT 7860814 is a solid carbide turning insert in the CCMT432-PM 4425 designation, part of the CoroTurn 107 series. It carries a multi-layer CVD coating — TiCN, Al2O3, and TiN — applied for wear resistance and thermal stability during turning operations. The insert features an 80-degree diamond shape (C shape code), a 0.79 mm corner radius, and a 12.70 mm inscribed circle. With two cutting edges and a neutral hand orientation, it is suited for finishing and semi-finishing passes. Machinists and CNC lathe operators in production shops are the primary installers of this insert.

This insert is designed primarily for turning steel, with cast iron as a secondary workpiece material. The PM chip breaker geometry supports consistent chip control across a range of cutting conditions. It is used in external turning applications on CNC lathes and turning centers where a positive-rake CCMT-style insert is required. The CoroTurn 107 series is built for light to moderate cutting depths, making this insert well-suited for finishing operations on ferrous materials in both high-volume and job-shop environments.

Key Features

• CVD multi-layer coating: TiCN, Al2O3, and TiN for extended tool life on steel and cast iron
• 80-degree diamond insert shape (C code) with 7-degree relief angle for positive cutting geometry
• 0.79 mm corner radius for controlled surface finish on finish and semi-finish passes
• PM chip breaker geometry engineered for reliable chip control in steel turning
• Neutral hand orientation — compatible with standard CCMT toolholders without hand-specific restrictions
• Two cutting edges per insert for cost-effective use

Compatibility

Designed as an OEM-style replacement insert for toolholders accepting CCMT 12 04 08 geometry inserts. ISO code: CCMT 12 04 08-PM 4425. Compatible with clamp and screw insert-holding methods. Verify toolholder pocket angle and insert seating before use.

Installation Notes

This insert is installed by machinists or tooling technicians on CNC lathes or manual turning centers. Always power down and lock out the machine before indexing or replacing inserts. Use the appropriate torque wrench per the toolholder manufacturer's specification when securing the clamping screw — do not overtighten by hand. Inspect the insert pocket and seating surface for chips or debris before seating the new insert to ensure proper contact.