Sandvik Coromant 7080776 Turning Insert RCMT43 Carbide

Product Description

The SANDVIK COROMANT 7080776 is a round carbide turning insert designed for external and internal turning operations on CNC lathes. It carries the RCMT 12 04 00 4335 ISO designation and belongs to the CoroTurn 107 series. The insert is CVD-coated with a TiCN, Al2O3, and TiN multilayer stack applied over a solid carbide substrate, giving it thermal resistance and wear protection suited to continuous and interrupted cuts on steel workpieces. With 4 usable cutting edges and a neutral hand orientation, the 7080776 is a cost-efficient choice for production turning cells where edge life and consistent surface finish matter.

This insert is designed for steel workpieces in the P-category ISO classification, covering a wide range of unalloyed, low-alloy, and high-alloy carbon steels. The CoroTurn 107 series is a screw-clamped, round-insert system commonly used in general turning, profiling, and copy-turning applications on both horizontal and vertical CNC lathes. The round insert geometry allows continuous re-indexing for maximum material removal before the insert is retired. A no-wiper, no-chip-breaker configuration (chip breaker code 00) is standard on this grade, making it appropriate for medium to rough turning passes.

Key Features

• CVD multilayer coating: TiCN, Al2O3, and TiN for extended tool life on steel
• 4 cutting edges per insert for maximum indexing economy
• Round insert shape (code R) enables profiling and copy-turning passes
• Screw-clamped insert holding method for positive, repeatable seating
• Neutral hand orientation fits standard CoroTurn 107 toolholders
• Grade 4335 carbide substrate optimized for ISO P steel machining

Compatibility

Designed for use in CoroTurn 107 series screw-clamped toolholders that accept RCMT 12 04 00 geometry inserts. Confirm toolholder pocket and clamping screw specifications against the ISO code before installation.

Installation Notes

Indexing and insert seating should be performed by a qualified machinist or tooling technician with the spindle locked out and the machine in an e-stop state. Use the correct torx or hex key specified for the CoroTurn 107 clamping screw; over-torquing the screw can crack the insert or damage the pocket. Inspect the toolholder pocket and clamping screw for wear or debris before seating a new insert. Follow the machine tool manufacturer and shop safety program requirements when changing inserts at the turret.