Seco 03062794 DNMG433-M3 TK1501 Carbide Turning Insert

Product Description

The SECO 03062794 is a DNMG-style indexable turning insert in the M3 chip breaker series, manufactured from solid carbide with a CVD-applied Duratomic multilayer coating of TiCN, Al2O3, and Cr. It carries a 55-degree diamond shape (insert shape code D), a neutral hand orientation, and four usable cutting edges. The insert measures 1.2204 inches in length with a 0.5-inch inscribed circle, a corner radius of 0.0472 inches (3/64 inches), and a thickness of 0.1874 inches (3/16 inches). The chamfered and honed cutting edge style and negative rake geometry suit high-engagement roughing and semi-finishing operations on cast iron, steel, and stainless steel.

This insert is suited for lathe and turning center applications in both production and job-shop environments. It is designed for back turning, boring, facing, and general turning operations. Primary target workpiece material is cast iron (ISO material code K), with secondary suitability for steel (P) and stainless steel (M). The M3 chip breaker geometry manages chip flow in medium-cut scenarios. Compatible insert holding methods include clamp, pin, and lever lock toolholders. The maximum depth of cut reaches 0.5630 inches, making this insert viable for aggressive stock removal passes.

Key Features

• CVD Duratomic multilayer coating: TiCN, Al2O3, and Cr for extended tool life on cast iron and steel
• 55-degree diamond insert shape with four cutting edges maximizes cost-per-edge value
• Neutral hand orientation fits left-hand, right-hand, and face turning setups
• M3 chip breaker geometry controls chip formation in medium-cut applications
• Chamfered and honed cutting edge style reduces micro-chipping on interrupted cuts
• Compatible with clamp, pin, and lever lock toolholder systems

Compatibility

Designed as an OEM-style replacement or direct-fit indexable insert for DNMG-series toolholders accepting a 0.5-inch inscribed circle, 55-degree diamond, neutral-hand insert. Conforms to ANSI and ISO standards; ISO designation DNMG150412-M3, industry standard number DNMG433-M3. Material grades K10, K20, and K30.

Installation Notes

Indexable turning inserts are installed and replaced by qualified machinists or toolroom technicians. Power down and lock out the spindle before seating or indexing any insert. Seat the insert fully against the toolholder pocket and torque the clamping screw or lever to the toolholder manufacturer's specification. Inspect the pocket and shim for chips or debris before each index to prevent insert rocking and premature edge failure.