Sandvik Coromant 5755649 Turning Insert VBMT331-MF 1125

Product Description

The SANDVIK COROMANT 5755649 is a solid carbide turning insert in the VBMT style, designed for external turning operations on CNC lathes and turning centers. It carries a dual-layer PVD coating of TiAlN and AlCr2O3, which delivers heat resistance and edge wear protection at elevated cutting speeds. The insert features a 35-degree diamond shape, a 3/8-inch inscribed circle, a 1/64-inch corner radius, and a neutral hand orientation. It belongs to the CoroTurn 107 series and uses a screw-holding method. Machinists and CNC operators working with steel, stainless steel, superalloy, and titanium workpieces will find the MF chip breaker geometry well suited to light-to-medium finishing cuts.

This insert is intended for precision turning of steel and related difficult-to-machine materials in both production and job-shop environments. The MF chip breaker is optimized for finishing passes where consistent chip control and surface finish are the priority. The VBMT geometry with a 5-degree relief angle suits positive-rake toolholders commonly used in light turning applications. It is a per-piece sale with a minimum order quantity of 10 units. Applications include external longitudinal turning and facing on CNC lathes in industrial and aerospace machining environments.

Key Features

• PVD-coated TiAlN and AlCr2O3 dual-layer coating for heat resistance and extended tool life
• 35-degree diamond insert shape (Shape Code V) provides a sharp, low-cutting-force geometry
• MF chip breaker designed for finishing operations with controlled chip evacuation
• Neutral hand orientation compatible with standard VBMT screw-lock toolholders
• Two cutting edges per insert maximize value per piece
• Screw-clamp holding method (Clearance Code B, Tolerance Code M) for secure, repeatable seating

Compatibility

Designed for use in VBMT-style screw-lock toolholders within the CoroTurn 107 series. Compatible with workpiece materials including steel, stainless steel, superalloy, and titanium (ISO Material Codes P, M, S). Verify toolholder bore diameter accepts a 0.1732-inch insert hole before installation.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Ensure the machine spindle is fully stopped and locked out before indexing or replacing inserts. Seat the insert fully against the toolholder pocket faces before tightening the clamping screw to avoid micro-movement under cutting load. Inspect the insert pocket and screw threads for chips or damage each time the insert is indexed to the fresh cutting edge.