Sandvik Coromant 6868248 Turning Insert CCMT432-KM 3225

Product Description

The SANDVIK COROMANT 6868248 is a CCMT432-KM 3225 grade solid carbide turning insert designed for precision external turning operations on CNC lathes and turning centers. It features a CVD-applied multilayer coating of TiCN, Al2O3, and TiN, which provides thermal resistance and extended tool life. The insert has an 80-degree diamond shape with a neutral hand orientation, a 1/2-inch inscribed circle, and a 1/32-inch corner radius. With a KM chip breaker geometry, it is engineered to produce manageable chips and maintain consistent surface finish. It is part of the CoroTurn 107 series and is installed by machinists and tooling technicians in production and job-shop environments.

This insert is optimized for turning cast iron workpieces, classified under primary workpiece material code K. The CoroTurn 107 series targets finishing and light roughing passes where dimensional accuracy and surface integrity are critical. The screw-holding method provides rigid clamping in standard CCMT toolholders. With two cutting edges per insert, it offers an economical cost-per-edge ratio for medium to high-volume turning operations. Typical applications include shaft turning, facing, and profiling on gray, ductile, and compacted graphite iron components.

Key Features

• CVD multilayer coating: TiCN, Al2O3, TiN for wear resistance and thermal stability
• KM chip breaker geometry engineered for cast iron chip control
• 80-degree diamond insert shape with rounded cutting edge style
• 1/32-inch corner radius for controlled edge engagement and surface finish
• Two cutting edges per insert for extended tool life per piece
• Screw-mounted clamping compatible with standard CCMT toolholder systems

Compatibility

Designed for use in CCMT-style toolholders within the Sandvik Coromant CoroTurn 107 turning system. ISO designation CCMT 12 04 08-KM 3225 can be referenced when cross-referencing with equivalent toolholder specifications. Verify toolholder pocket geometry and insert seat dimensions before installation.

Installation Notes

This insert is installed by qualified machinists or tooling technicians using the screw-clamp method standard to CCMT toolholder systems. Power down and de-energize the machine before changing inserts, and follow the machine tool manufacturer's lockout/tagout procedure. Use the correct Torx or hex key specified by the toolholder manufacturer to seat the clamping screw. Inspect the toolholder seat for debris or wear before seating a new insert to ensure proper support and indexing accuracy.