Sandvik Coromant 6868486 Turning Insert DNMG331-KF 3225

Product Description

The SANDVIK COROMANT 6868486 is a DNMG-style indexable turning insert in the T-Max P series, designed for external and internal turning operations on CNC lathes and turning centers. This insert features a 55-degree diamond shape (Insert Shape Code D) with a neutral hand orientation and a rounded cutting edge style. It is manufactured from solid carbide and finished with a CVD-applied multilayer coating of TiCN, Al2O3, and TiN under grade designation 3225. The inscribed circle measures 3/8 inches (0.3750 inches), the corner radius is 1/64 inches (0.0156 inches), and insert thickness is 3/16 inches (0.1875 inches). The KF chip breaker geometry is suited for finishing and light turning passes.

This insert is intended for use in precision metal turning applications where surface finish and dimensional consistency are priorities. Grade 3225 with its TiCN/Al2O3/TiN CVD coating is well suited for medium to finishing cuts in steel and cast iron. It fits into DNMG-compatible toolholders using clamp and pin holding methods. The maximum depth of cut reaches 11.23 mm under appropriate cutting conditions. Machinists and CNC operators in production shops, toolrooms, and job shops are the primary users of this insert style.

Key Features

• CVD multilayer coating: TiCN, Al2O3, and TiN for wear resistance and thermal stability
• 55-degree diamond insert shape (ISO Code DNMG 11 04 04-KF 3225) for versatile turning profiles
• KF chip breaker geometry optimized for finishing and light turning operations
• Neutral hand orientation compatible with both right- and left-hand toolholder setups
• Clamp and pin insert holding method for secure seating under cutting loads
• Rounded cutting edge style reduces chipping risk and extends tool life in consistent cuts

Compatibility

Designed for use in DNMG-compatible turning toolholders that accept clamp and pin holding. ISO designation DNMG 11 04 04-KF 3225 should be referenced when matching to toolholder seats and insert pockets.

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 torque screwdriver or clamping tool specified for the toolholder to secure the clamp and pin without over-tightening. Inspect the insert pocket and seating surfaces for chips or debris before seating each new insert edge.