Sumitomo 19PW335 Turning Insert CNMG432EGU AC630M Carbide

Product Description

The SUMITOMO 19PW335 is a solid carbide turning insert in the CNMG432EGU geometry, grade AC630M, designed for precision metal-turning operations on CNC lathes and turning centers. The insert features a CVD-applied aluminum oxide (Al2O3) coating that provides thermal resistance and wear protection during continuous and interrupted cuts. With an 80-degree diamond shape, a 0.5 inch inscribed circle, a 0.0313 inch corner radius, and an insert length of 0.579 inches, this insert delivers consistent edge geometry on ferrous and stainless steel workpieces. Machinists and CNC tooling specialists select this insert for its EGU chip breaker geometry and positive rake angle of 7 degrees, which promote efficient chip evacuation and reduced cutting forces.

The 19PW335 is suited for turning applications in general machining and stainless steel finishing environments. The neutral hand orientation makes it adaptable to both right-hand and left-hand tool holders within standard CNMG-style tooling systems. The AC630M grade designation targets ISO material groups covering C5, C5A, C6, and C7 classifications, making it applicable across a range of steel and stainless steel turning operations. Secondary workpiece material compatibility includes stainless steel (ISO code M). This insert is typically used in production shops, job shops, and maintenance machining environments where dimensional consistency and surface finish matter.

Key Features

• CVD Al2O3 coating for high thermal resistance and extended tool life in steel turning
• EGU chip breaker geometry promotes positive chip control and reduced cutting forces
• 80-degree diamond insert shape (CNMG style) for strong edge geometry and versatile entry angles
• Positive rake angle of 7 degrees for lower cutting forces on stainless and alloy steels
• Clamp and pin holding method for secure seating in standard CNMG tool holders
• Conforms to ANSI and ISO 13399 standards; ISO code CNMG120408N-GU

Compatibility

Designed as a direct-fit replacement for CNMG432-style turning insert holders accepting a 0.5 inch inscribed circle and clamp-and-pin retention. Compatible with ISO material grades C5, C5A, C6, and C7 workpiece classifications, with noted suitability for stainless steel (ISO M code) turning applications.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician with the spindle at a full stop and all machine power isolated per the machine tool manufacturer lockout/tagout procedure. Seat the insert fully against the pocket walls before engaging the clamp or pin to ensure proper support and prevent insert rocking. Inspect the tool holder pocket for wear, chips, or contamination before seating a new insert, as pocket damage directly affects edge geometry and surface finish. Follow the machine tool builder and insert manufacturer recommendations for cutting parameters; do not exceed rated depth of cut or feed rates for the AC630M grade.