Sandvik Coromant 7860795 Turning Insert Dcmt 4425

Product Description

The SANDVIK COROMANT 7860795 is a solid carbide turning insert in the CoroTurn 107 series, designed for external and internal turning operations on CNC lathes and turning centers. It carries a CVD-applied multilayer coating of TiCN, Al2O3, and TiN, which provides wear resistance and thermal protection during continuous and interrupted cuts. The insert has a 55-degree diamond shape (ISO shape code D), a 3/8 inch inscribed circle (9.53 mm), a 0.79 mm corner radius (0.0313 inch), and a neutral hand orientation. It is configured with the PF chip breaker geometry and is manufactured to Sandvik grade 4425. Each package contains one insert; the minimum order quantity is 10 inserts.

This insert is rated primarily for steel (ISO material code P) and secondarily for cast iron (ISO material code K). The PF chip breaker geometry is suited for finishing and light semi-finishing passes where close tolerances and consistent chip control are required. It fits DCMT-style toolholders using clamp or screw holding methods. The ISO designation for this insert is DCMT 11 T3 08-PF 4425, and the manufacturer catalog number is DCMT 3(2.5)2-PF 4425. Typical users are CNC machinists and toolroom operators in production and job-shop environments.

Key Features

• CVD multilayer coating: TiCN, Al2O3, TiN for wear and heat resistance
• 55-degree diamond insert shape (shape code D) with 2 cutting edges
• 3/8 inch (9.53 mm) inscribed circle with 0.79 mm corner radius
• PF chip breaker geometry optimized for finishing on steel and cast iron
• Neutral hand orientation fits standard DCMT right-hand and left-hand toolholders
• Clamp and screw compatible holding method for rigid setup

Compatibility

Designed to fit DCMT-style toolholders using clamp or screw clamping. ISO code DCMT 11 T3 08-PF 4425. Manufacturer catalog reference DCMT 3(2.5)2-PF 4425. Part of the Sandvik Coromant CoroTurn 107 series. Confirm toolholder pocket geometry and insert seat dimensions against the DCMT insert specification before installation.

Installation Notes

Installation is performed by qualified CNC machinists or toolroom technicians. Power down the machine and engage the lockout/tagout procedure before changing inserts. Seat the insert fully in the pocket and tighten the clamping screw or clamp to the toolholder manufacturer's specified torque before engaging the cut. Inspect the cutting edge and seating surface for debris or damage before each use.