Sandvik Coromant 6868233 Turning Insert CCMT21.52-KM 3225

Product Description

The SANDVIK COROMANT 6868233 is a solid carbide turning insert in the CCMT style, designed for precision external turning operations on CNC lathes and turning centers. This insert carries a CVD-applied multilayer coating of TiCN, Al2O3, and TiN, which builds wear resistance and thermal stability during continuous and light interrupted cuts. It features an 80-degree diamond shape with a neutral hand orientation, a 1/4-inch inscribed circle, and a 1/32-inch corner radius. The KM chip breaker geometry targets controlled chip formation. It belongs to the CoroTurn 107 series and is intended for installation by machinists and CNC tooling specialists in production and job-shop environments.

This insert is suited for turning cast iron workpieces, consistent with its K-grade primary workpiece material classification. The CCMT geometry with screw-type insert holding makes it compatible with standard CoroTurn 107 toolholders that accept the CCMT 06 02 08 ISO code insert seat. It is appropriate for light to moderate depth-of-cut operations, with a maximum depth of cut of 5.65 mm. The CVD coating process and KM chip breaker make it particularly effective in finish and semi-finish turning passes where dimensional accuracy and surface quality matter.

Key Features

• CVD-applied TiCN, Al2O3, and TiN multilayer coating for wear and thermal resistance
• 80-degree diamond insert shape with neutral hand orientation
• KM chip breaker geometry for controlled chip evacuation on cast iron
• Screw-type insert holding method for rigid, repeatable seating
• Rounded cutting edge style with 1/32-inch corner radius for smooth finish passes
• Two cutting edges per insert for extended tooling value

Compatibility

Designed for use in CoroTurn 107 series toolholders accepting CCMT 06 02 08-KM insert geometry per ISO classification. Primary workpiece material designation is cast iron (ISO material code K). Confirm toolholder seat and clamping screw size before installation.

Installation Notes

Turning inserts of this type are seated and secured by machinists or CNC tooling technicians during scheduled toolchange intervals. Power down and lock out the spindle drive before indexing or replacing inserts. Use the correct torque driver for the clamping screw to avoid seat damage or insert cracking — refer to the toolholder manufacturer specification for the applicable screw torque. Inspect the insert pocket and clamping screw for wear or damage each time an insert is indexed.