Sumitomo 19RJ477 Turning Insert TPMT332ENF AC820P Carbide

Product Description

The SUMITOMO 19RJ477 is a solid carbide coated turning insert in the TPMT series, designed for precision external turning operations on CNC and manual lathes. It carries the ANSI insert code TPMT332 and ISO code TPMT160408, with a triangular shape (60-degree included angle) and a positive rake and side clearance geometry. The AC820P grade uses a CVD coating process, providing high wear resistance with moderate toughness. Primary target workpiece materials are steel (P) and cast iron (K). This insert is installed by machinists and CNC operators in production and job-shop environments.

The 19RJ477 is suited for light to medium machining passes on steel and cast iron components. The ENF chip breaker geometry supports controlled chip formation across both material categories, making it appropriate for finishing and semi-finishing applications where consistent surface finish and tool life are priorities. It is screw-held in compatible TPMT-style toolholders and fits standard triangular insert pockets.

Key Features

• AC820P CVD-coated carbide grade — high wear resistance for steel and cast iron
• ENF chip breaker supports light and medium machining operations
• Positive rake and positive side clearance (clearance code P) for reduced cutting forces
• 60-degree triangular insert shape provides three usable cutting edges
• Screw-held mounting method for secure, repeatable insert indexing
• Complies with ANSI and ISO 13399 insert standards

Compatibility

Designed as a direct-fit replacement for TPMT-style turning insert toolholders accepting a 3/8-inch inscribed circle triangular insert. Compatible with toolholders specifying ANSI code TPMT332 or ISO code TPMT160408. Material grade classifications C5A, C6, C7, and C8 apply.

Installation Notes

Insert replacement and indexing should be performed by a qualified machinist or CNC operator with the machine powered down and the spindle fully stopped. Use the appropriate torque screwdriver for the insert clamping screw — do not overtighten, as this can fracture the carbide body. Inspect the toolholder pocket and locating surfaces for chips or wear before seating a new insert. Follow the machine tool manufacturer and shop safety procedures for insert handling, as carbide edges are sharp.