Sumitomo 19RBAFP Turning Insert DNMG432EMU AC830P Carbide

Product Description

The SUMITOMO 19RBAFP is a solid carbide coated turning insert designed for precision metal cutting on CNC and manual lathes. It carries the ANSI designation DNMG432EMU and ISO code DNMG150408N-MU, fitting standard DNMG-style toolholders with a clamp and pin holding method. The AC830P grade features a CVD coating applied over a solid carbide substrate, producing a wear-resistant edge suited for continuous and interrupted cuts. Key geometry specs include a 55-degree diamond insert shape, a 0.5000-inch inscribed circle, a 0.0313-inch (1/32 inch) corner radius, a 0.6102-inch insert length, and a 0.1875-inch insert thickness. Negative rake geometry and a neutral hand orientation make this insert compatible with a wide range of turning setups. Machinists and CNC operators install this insert in production turning applications.

This insert is rated for primary workpiece materials classified as ISO P (carbon and alloy steels) and ISO M (stainless steels), with universal secondary material coverage. The EMU chip breaker geometry is engineered to manage chip control across varying feed rates and depths of cut in these material groups. It suits both roughing and finishing passes in job shop and production environments where consistent edge life and surface finish are required. The AC830P grade targets steel and stainless steel turning where CVD-coated carbide grades in the C5, C5A, and C6 material grade range are specified.

Key Features

• CVD-coated solid carbide substrate in manufacturer grade AC830P for extended tool life in steel and stainless turning
• 55-degree diamond insert shape (Shape Code D) with negative rake for strong cutting edge geometry
• 0.0313-inch corner radius (1/32 inch) for a balance of edge strength and surface finish capability
• EMU chip breaker geometry engineered for ISO P and ISO M workpiece materials
• Neutral hand orientation — compatible with both right-hand and left-hand toolholder setups
• Clamp and pin holding method for secure insert retention under high cutting forces
• Compliant with ANSI and ISO 13399 standards for insert identification and tooling data exchange

Compatibility

Designed as a direct-fit replacement for standard DNMG432 toolholders using clamp and pin insert retention. Compatible toolholders must accommodate a 0.5000-inch inscribed circle, a 0.1875-inch insert thickness, and a 0.2030-inch hole diameter. Suitable for C5, C5A, and C6 material grade applications per ANSI classification.

Installation Notes

Insert replacement should be performed with the machine fully powered down and the spindle locked. Use the appropriate torque wrench and manufacturer-specified clamp hardware when seating the insert to avoid cracking the carbide substrate. Verify toolholder pocket condition and shim surfaces before installing a new insert. Consult the toolholder manufacturer documentation and applicable shop safety procedures before returning the machine to service.