Sandvik Coromant 7860786 Turning Insert CCMT32.52-PF 4425

Product Description

The SANDVIK COROMANT 7860786 is a solid carbide turning insert in the CCMT style, designed for single-point turning operations on CNC and manual lathes. It carries a CVD-applied multilayer coating of TiCN, Al2O3, and TiN, which delivers wear resistance and thermal protection across a broad range of cutting speeds. The insert features an 80-degree diamond shape with a neutral hand orientation, a 9.53 mm inscribed circle, and a 0.79 mm corner radius. It belongs to the CoroTurn 107 series and is held in the toolholder by a combination of clamp and screw. Machinists and CNC operators working in job shop or production environments install this insert as a direct replacement when edge life is exhausted.

This insert is engineered primarily for machining steel (ISO material code P) and secondarily for cast iron (ISO material code K). The PF chip breaker geometry is suited to finishing and light roughing passes where controlled chip formation and surface finish are priorities. The CoroTurn 107 series is a widely used platform in turning centers for external and internal profiling applications. The ISO designation for this insert is CCMT 09 T3 08-PF 4425, and the manufacturer catalog number is CCMT 3(2.5)2-PF 4425. Sold individually.

Key Features

• CVD multilayer coating — TiCN, Al2O3, and TiN — for extended tool life on steel and cast iron
• 80-degree diamond insert shape provides a strong cutting edge suitable for profiling and straight turning
• PF chip breaker geometry optimized for finishing to light roughing passes
• 0.79 mm corner radius balances surface finish quality with edge strength
• Neutral hand orientation fits standard CCMT-style toolholders without handedness restrictions
• Dual holding method — clamp and screw — for rigid setup in high-speed turning applications

Compatibility

Designed as a direct replacement insert for CCMT-style toolholders in the CoroTurn 107 series platform. ISO code CCMT 09 T3 08-PF 4425. Compatible toolholders must accept a 9.53 mm inscribed circle insert with clamp and screw holding. Verify toolholder insert seat size and clamping method before installation.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the appropriate torx or hex key to seat the screw and clamp to the toolholder manufacturer's specified procedure — do not overtighten by feel alone. Inspect the insert pocket and seating surface for chips or debris before seating the new insert to ensure proper contact and edge registration.