Seco 74050190 Turning Insert CNGP430.5FMF1-24 890 Carbide

Product Description

The SECO 74050190 is a solid carbide, uncoated turning insert in the CNGP-MF1 series, designed for precision metal cutting operations including turning, facing, and boring. It features an 80-degree diamond insert shape with a negative rake angle and a sharp cutting edge, delivering controlled chip formation through the MF1 chip breaker geometry. The inscribed circle measures 0.5000 inches and the corner radius is 0.0079 inches, making it well suited for finishing and semi-finishing passes. With four cutting edges and neutral hand orientation, it offers extended tool life in demanding machining environments. Licensed machinists and CNC operators working with superalloys and titanium will find this insert a direct fit for high-performance turning applications.

This insert is engineered primarily for superalloys and titanium (Material Grade S10, S20) and is also applicable to secondary workpiece materials including steel, cast iron, non-ferrous metals, and hardened materials. It supports multi-use applications across boring, facing, and turning operations on CNC lathes and turning centers. The MF1 chip breaker geometry is optimized for light to medium depths of cut on difficult-to-machine alloys. The ANSI and ISO standard compliance ensures dimensional interchangeability across compatible toolholding systems.

Key Features

• 80-degree diamond insert shape (Shape Code C) with negative rake for stable cutting forces
• MF1 chip breaker geometry optimized for superalloys and titanium
• Solid carbide, bright/uncoated construction — no coating delamination risk in abrasive materials
• Four usable cutting edges for extended cost-per-edge value
• Compatible with clamp, pin, and lever lock insert holding methods
• Meets ANSI and ISO standards; ISO code CNGG120402-MF1

Compatibility

Designed for use in CNGP-style toolholders that accept clamp, pin, or lever lock insert retention. Compatible with ANSI and ISO standard toolholding systems. Industry standard number CNGP430.5F-MF1; ISO equivalent CNGG120402-MF1. Suitable for toolholders designed around a 1/2 inch inscribed circle insert with a 3/16 inch insert thickness and a 0.2028 inch hole diameter.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Always index or replace inserts with the machine fully stopped and locked out per facility lockout/tagout procedures. Ensure the toolholder pocket and clamping mechanism are clean and free of chips before seating the insert. Verify correct insert orientation and seating before resuming cuts, as improper seating can cause insert fracture or workpiece damage.