Sandvik Coromant 5755089 Turning Insert TPU432 Carbide

Product Description

The SANDVIK COROMANT 5755089 is a solid carbide turning insert in the TPU432 style, designed for precision metal cutting in CNC and manual lathe applications. The insert carries a manufacturer grade of 2025 and features a multilayer TiCN, Al2O3, and TiN coating for improved wear resistance and thermal stability during turning operations. With a 60-degree triangular shape and a 1/32 inch (0.0313 inch) corner radius, it suits general turning, facing, and profiling passes on a range of workpiece materials. The insert measures 0.8345 inches in length with a 1/2 inch inscribed circle and a 3/16 inch thickness. Cutting tool specialists, CNC machinists, and production turning technicians are the primary installers and users.

This insert is suited to external and internal turning operations on CNC lathes and turning centers in both job shop and production environments. The TPUN insert style with a P clearance code and U tolerance code makes it a standard fit for toolholders designed to accept triangular clamp-style inserts. The ISO code designation is TPUN 22 04 08 2025, which can be used to cross-reference compatible toolholder specifications. It is appropriate for medium to finishing cuts where a small corner radius and coated carbide grade provide consistent edge life.

Key Features

• Solid carbide substrate with multilayer TiCN, Al2O3, and TiN coating for extended tool life
• 60-degree triangular insert shape provides up to three usable cutting edges per insert
• 1/32 inch (0.79 mm) corner radius suited for finishing and medium turning passes
• Manufacturer grade 2025 for consistent performance on steel and similar workpiece materials
• Clamp-style insert holding method compatible with standard TPUN-designated toolholders
• ISO code TPUN 22 04 08 2025 for straightforward toolholder cross-referencing

Compatibility

Designed for use in toolholders accepting TPUN-style triangular turning inserts with a P clearance angle and U tolerance class, as identified by ISO code TPUN 22 04 08 2025. Verify toolholder pocket dimensions and clamping style against insert size code 432 before installation.

Installation Notes

Insert replacement should be performed by a qualified machinist or cutting tool technician with the machine spindle fully stopped and the machine locked out per facility safety procedures. Use the appropriate torque wrench and clamping hardware specified by the toolholder manufacturer when seating the insert. Inspect the toolholder pocket for wear or debris before installing a new insert, as a damaged pocket will reduce edge life and dimensional accuracy. Dispose of worn inserts according to applicable shop and local regulations for carbide tooling waste.