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The SECO 74043759 is a solid carbide round profiling and turning insert in the RCGS3F style, grade 883, designed for precision metal removal in demanding machining applications. It features a 3/8-inch inscribed circle, a 33/64-inch thickness, and a 0.1875-inch corner radius. With a positive rake geometry, 7-degree relief angle, and chipbreaker code 46, this insert is engineered to manage chip flow and reduce cutting forces across a range of workpiece materials including non-ferrous metals, superalloys, titanium, and hard materials. It is uncoated and carries four cutting edges for extended tool life between index cycles.
This insert suits CNC turning and profiling operations in production and job-shop environments. It is compatible with T-Lock style toolholders that accept the RCGS clamp and pin holding method. Typical applications include external and internal profiling passes on lathes and turning centers handling non-ferrous alloys such as aluminum and copper, superalloys and titanium components, and hardened workpieces. The neutral hand orientation makes it adaptable to both left- and right-hand setups without changing the insert geometry.
Designed for use with T-Lock series toolholders accepting RCGS-style inserts with clamp and pin holding. ISO code RCGS9.525-46; standards RCGS3F-46 and RCGS9.525-46. Primary workpiece materials: non-ferrous metals (N), superalloys and titanium (S), and hard materials (H).
Installation is performed by qualified machinists or toolroom technicians following the toolholder manufacturer's clamping torque specifications. Power down and lock out the machine spindle before indexing or replacing inserts. Inspect the toolholder pocket and clamping pin for wear or debris before seating a new insert. Handle carbide inserts carefully to avoid chipping the cutting edge prior to use.
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