Sandvik Coromant 5908989 Turning Insert CNMG544SMR 1125

Product Description

The SANDVIK COROMANT 5908989 is a CNMG544SMR 1125 grade solid carbide turning insert designed for demanding metal cutting applications on CNC lathes and turning centers. It features a dual-layer TiAlN and AlCr2O3 PVD coating that delivers high wear resistance across a range of cutting conditions. The insert measures 16.12 mm (0.6346 inches) in length with a 5/8-inch inscribed circle and a 1/16-inch corner radius. An 80-degree diamond (rhombic) shape with a negative side clearance and neutral hand orientation makes this insert suitable for general roughing and medium machining passes on difficult workpiece materials.

This insert is rated for roughing and medium machining operations, particularly on stainless steel (ISO material group M) and special or super alloys (ISO material group S). The SMR chip breaker geometry is engineered to manage chip flow at higher feed rates and depths of cut, with a maximum depth of cut of 10.60 mm (0.4173 inches). It is held in place using a clamp or pin clamping method, fitting standard CNMG-style toolholders. Machinists and CNC operators in aerospace, oil and gas, and industrial manufacturing environments will find this insert suited to production turning of corrosion-resistant and high-temperature alloys.

Key Features

• TiAlN and AlCr2O3 PVD dual-layer coating for high wear resistance in stainless steel and super alloy cutting
• SMR chip breaker geometry optimized for roughing and medium machining operations
• 80-degree diamond insert shape (C-style) with negative clearance for strong cutting edge support
• Maximum depth of cut of 10.60 mm (0.4173 inches) for aggressive material removal
• Compatible with both clamp and pin insert holding methods
• ANSI size code 544 and ISO size code 160616 for straightforward toolholder matching

Compatibility

Fits standard CNMG-style turning toolholders designed for ANSI insert code CNMG544 or ISO insert code CNMG160616. The insert is rated for ISO workpiece material groups M (stainless steel) and S (special and super alloys). Belongs to the SANDVIK COROMANT T-Max P series.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before seating or replacing inserts. Use the appropriate torx or hex key torque driver to secure the clamp or pin without overtightening. Inspect the insert pocket and shim seat for debris or wear before installing a new insert to ensure proper seating and edge geometry.