Sumitomo 19DY271 Turning Insert CNMA432 AC700G Carbide

Product Description

The SUMITOMO 19DY271 is a solid carbide turning insert in the CNMA432 configuration, designed for precision metal cutting in CNC lathe and turning center applications. Coated with titanium carbide (TiC) via a CVD process under the AC700G grade, this insert is engineered for high wear resistance and thermal stability during interrupted and continuous cuts. The 80-degree diamond shape (insert shape code C) provides a strong cutting edge geometry suited for general turning operations. At 0.5079 inches in length with a 0.5000-inch inscribed circle and a 0.0313-inch corner radius, it fits standard CNMA-style toolholders used by machinists and CNC operators across job shops and production environments.

This insert is intended for turning cast iron and steel workpieces, corresponding to ISO material codes K and P. The negative rake geometry and zero-degree relief angle (clearance code N) make it well suited for rigid setups where tool stability and edge strength are priorities. It is a single-piece packaged item sold in minimum order quantities of 10 units, consistent with production tooling procurement. The CN series designation and CNMA432 size code align with ANSI and ISO 13399 standards, making cross-referencing to compatible toolholders straightforward for tool crib and floor personnel.

Key Features

• AC700G grade TiC coating applied via CVD process for elevated wear and heat resistance
• 80-degree diamond insert shape with negative rake for strong, stable cutting edge
• 0.0313-inch corner radius reduces stress concentration on edge during steel and cast iron turning
• CNMA432 form factor conforms to ANSI and ISO 13399 standards for broad toolholder compatibility
• Clamp and pin holding method provides secure seating in compatible CNMA-style toolholders
• Chip breaker style A integrated into insert geometry for controlled chip evacuation

Compatibility

Designed as a direct-fit replacement-style insert for CNMA-style toolholders accepting the 432 insert size code, per ANSI and ISO 13399 dimensional standards. Compatible primary workpiece materials include cast iron (ISO code K) and steel (ISO code P).

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician with the machine powered off and in a locked-out state before any insert change. Use the appropriate torque wrench and clamp screws specified by the toolholder manufacturer to seat the insert securely against the pocket without over-torquing. Inspect the insert pocket and shim for wear or debris before seating the new insert. Follow your facility safety procedures and applicable ANSI machining standards when setting tool offsets after an insert change.