Sumitomo 19RJBTK Turning Insert DNMG432EFL AC820P Carbide

Product Description

The SUMITOMO 19RJBTK is a solid carbide turning insert designed for precision metal cutting operations on CNC and manual lathes. Manufactured to ANSI code DNMG432EFL and ISO code DNMG150408N-FL, this insert features an AC820P grade with a CVD-applied aluminum oxide (Al2O3) coating. The diamond-shaped insert body carries a 55-degree included angle and a neutral hand orientation, making it versatile for standard external turning applications. With a 10-degree positive rake angle and an EFL chip breaker geometry, it is engineered to manage chip flow efficiently during steel cutting operations. Licensed machinists and CNC programmers in production and job-shop environments are the primary users.

This insert is suited for turning steel workpieces in both roughing and finishing passes where controlled chip breaking is critical. The EFL chip breaker geometry is optimized for secondary workpiece material code P, indicating general steel applications. The DNMG style and DN series classification make this a standard format insert compatible with a wide range of DNMG-style toolholders used in production turning centers and manual lathes. The AC820P grade is a coated carbide grade formulated for steel cutting where wear resistance and thermal stability are priorities.

Key Features

• AC820P grade with CVD-applied Al2O3 coating for wear resistance in steel turning
• EFL chip breaker geometry promotes efficient chip control during steel cutting
• 55-degree diamond insert shape (DNMG style) with neutral hand orientation
• Positive rake angle of 10 degrees reduces cutting forces
• Held by clamp and pin method for secure seating in compatible toolholders
• Meets ANSI and ISO 13399 standards for dimensional interchangeability

Compatibility

Designed as a standard DNMG-style replacement turning insert compatible with toolholders accepting DNMG432 format inserts per ANSI and ISO 13399 specifications. Primary workpiece application is steel (ISO material group P).

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine spindle before seating or replacing any insert. Use the appropriate torque wrench and clamp hardware specified by the toolholder manufacturer to secure the insert — do not overtighten or substitute fasteners. Inspect the toolholder pocket and seating surfaces for chips or damage before installing a new insert.