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The SECO 02959992 is a CNMG433W-M3 series indexable turning insert manufactured from solid carbide and finished with a CVD-applied Duratomic multilayer coating of TiCN, Al2O3, and Cr. Carrying manufacturer grade TP1501, this negative-rake, neutral-hand insert features an 80-degree diamond shape, a 0.5 inch inscribed circle, and a 3/64 inch (0.0472 inch) corner radius. The M3 chip breaker geometry uses a chamfered and honed cutting edge style suited for consistent chip control across varying depths of cut up to 0.4606 inches. Four usable cutting edges are provided per insert.
This insert is designed for steel as the primary workpiece material, with cast iron and hard materials as secondary applications. It is rated to material grades P10 and P20 per ISO classification. Typical operations include turning, facing, and boring on CNC lathes and turning centers in production and job-shop environments. The CNMG433W-M3 geometry with wiper edge capability allows for improved surface finish at higher feed rates. It is installed and indexed by licensed machinists and CNC operators and conforms to both ANSI and ISO insert standards.
Designed as an OEM-style replacement or direct-use insert for CNMG-style toolholders accepting clamp, pin, or lever lock retention. ISO code CNMG120412W-M3; industry standard number CNMG433W-M3. Suitable for toolholders conforming to ANSI and ISO CNMG insert seating standards.
Insert indexing and replacement should be performed by a qualified machinist with the machine in a locked-out, zero-energy state. Seat the insert fully against all toolholder contact surfaces before tightening the clamping mechanism to avoid micro-movement during cutting. Inspect the insert pocket for chips or debris before seating a new edge. Follow the toolholder manufacturer torque and clamping specifications for the specific lever lock, clamp, or pin system in use.
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