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The SANDVIK COROMANT 7231287 is a CCMT-style indexable turning insert designed for precision external and internal turning operations on CNC lathes and turning centers. Part of the CoroTurn 107 series, it is manufactured from solid carbide and finished with a CVD-applied multilayer coating of TiCN, Al2O3, and TiN. This coating combination delivers strong wear resistance and thermal stability, making the insert well suited for continuous and light interrupted cuts. The 80-degree diamond insert shape (Shape Code C) provides a sharp, rigid cutting geometry, while the MF chip breaker is engineered to control chip flow in demanding applications. The insert carries a Neutral hand orientation and offers 2 cutting edges per insert.
This insert is primarily intended for machining stainless steel (ISO material group M), where edge toughness and controlled chip evacuation are critical. The CoroTurn 107 platform is common in both job shop and production turning environments, installed by CNC machinists and tool-room technicians. The screw-clamping holding method suits standard CoroTurn 107 toolholders that accept CCMT insert geometry. The MF chip breaker geometry performs well at moderate feed rates and depths of cut typical of stainless steel finishing and semi-finishing passes.
Designed for use in CoroTurn 107 series toolholders that accept CCMT insert geometry with a screw-clamp holding method. ISO designation CCMT 09 T3 04-MF 2220 may be used for cross-referencing compatible toolholder bores and insert seats.
Installation is performed by CNC machinists or tool-room technicians following standard indexable insert seating procedures. Ensure the machine spindle is fully stopped and the turret is in a safe index position before handling inserts or toolholders. Seat the insert fully against the pocket locating surfaces before tightening the clamping screw to the toolholder manufacturer's specified torque. Inspect the insert seat and screw threads for chips or debris before each index to maintain accurate tool-tip positioning.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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