Sandvik Coromant 5725845 Turning Insert Cpmt 1125 Carbide

Product Description

The SANDVIK COROMANT 5725845 is a solid carbide turning insert in the CoroTurn 111 series, designed for precision external and internal turning operations on CNC lathes and turning centers. Identified by ISO code CPMT 09 T3 04-MM 1125, this insert features an 80-degree diamond shape with a neutral hand orientation and a 0.365-inch length. The MM chip breaker geometry and dual-layer TiAlN plus AlCr2O3 coating applied via PVD process make it well-suited for controlled chip formation and extended tool life across demanding cutting conditions. Qualified machinists and CNC operators install and index this insert as part of regular tooling maintenance.

This insert is primarily intended for machining steel workpieces and is also rated for stainless steel, superalloys, and titanium, covering ISO material groups P, M, and S. The CoroTurn 111 series targets applications where screw-clamped toolholders are used and consistent insert seating is required. It is appropriate for finish to semi-finish turning passes where edge sharpness and coating integrity directly affect surface finish and dimensional accuracy. Shops running production volumes or tool presetting programs will find the grade 1125 well-matched to moderate cutting speeds in the materials listed.

Key Features

• 80-degree diamond insert shape (Shape Code C) for versatile turning and profiling access
• Grade 1125 with TiAlN and AlCr2O3 dual-layer PVD coating for thermal and abrasion resistance
• MM chip breaker geometry for controlled chip formation in steel and stainless steel
• Screw-clamped holding method for positive insert location and repeatable indexing
• Neutral hand orientation compatible with standard CPMT toolholder pockets
• 2 cutting edges per insert for cost-effective tooling utilization

Compatibility

Designed for use in CPMT-style screw-clamp toolholders within the CoroTurn 111 system. Compatible workpiece materials include steel, stainless steel, superalloys, and titanium (ISO material codes P, M, and S). Verify toolholder pocket geometry and insert size code 32.51 before installation.

Installation Notes

Insert indexing and replacement should be performed with the machine in a full stop and all axes locked per shop lockout/tagout procedures. Use the appropriate Torx or hex key to seat the clamping screw to toolholder specification without over-torquing the insert pocket. Inspect the insert seat and shim for chips or debris before seating a new insert to ensure proper contact and prevent premature edge failure. Disposal of carbide inserts should follow applicable local regulations for metallic cutting tool waste.