Sandvik Coromant 5908982 Turning Insert CNMG434-SMR 1105

Product Description

The SANDVIK COROMANT 5908982 is a CNMG434-SMR 1105 turning insert from the T-Max P series, designed for external turning operations on CNC lathes and turning centers. The insert is manufactured from solid carbide with a PVD-applied TiAlN coating, making it suitable for cutting stainless steel as its primary workpiece material, with superalloy and titanium as secondary applications. It features an 80-degree diamond shape (insert shape code C), a neutral hand orientation, and a 1/16-inch corner radius. With four cutting edges and a 1/2-inch inscribed circle, this insert delivers consistent tool life in demanding material removal applications. CNC machinists and toolroom professionals working with ISO M and S material groups will find this insert well-suited to their turning programs.

The 5908982 insert is intended for use in T-Max P compatible toolholders running turning operations on stainless steel, superalloy, and titanium workpieces. The SMR chip breaker geometry is designed to control chip formation in tough, work-hardening materials where chip evacuation is critical. This insert fits production and job-shop turning environments where consistent surface finish and edge integrity are required across medium to high cutting speeds with PVD-coated carbide grades.

Key Features

• TiAlN PVD coating provides heat and wear resistance for stainless steel and superalloy cutting
• SMR chip breaker geometry supports chip control in work-hardening materials
• 80-degree diamond insert shape (CNMG) with neutral hand for versatile turning setups
• Four usable cutting edges per insert for extended tool economy
• 1/16-inch (0.0625-inch) corner radius suitable for moderate finishing and semi-finishing passes
• Clamp and pin holding method ensures secure seating in T-Max P style toolholders

Compatibility

Designed for use in T-Max P series toolholders accepting CNMG 1204 style inserts. ISO code designation is CNMG120416-SMR 1105. Primary workpiece material code M (stainless steel); secondary workpiece material codes S (superalloy and titanium). Compatible holding methods include clamp and pin retention systems.

Installation Notes

Insert seating and replacement should be performed by a qualified CNC machinist or toolroom technician with the machine in a full stop and locked-out condition per applicable machine safety procedures. Ensure the insert pocket and clamping surfaces are clean and free of chips before seating the new insert. Use the correct torque tool for the clamping screw as specified by the toolholder manufacturer. Inspect the insert pocket for wear or damage each time an edge is indexed.