Sumitomo 19RBAFF Turning Insert TNMG543EMU AC830P Carbide

Product Description

The SUMITOMO 19RBAFF is a solid carbide turning insert designed for precision metal cutting on CNC lathes and turning centers. It carries the ANSI designation TNMG543EMU and ISO code TNMG270612N-MU, conforming to both ANSI and ISO 13399 standards. The insert features an Al2O3 coating applied via CVD process, which provides thermal resistance and wear protection during continuous and interrupted turning operations. It has a neutral hand orientation, a 60-degree triangular shape, a 5/8-inch inscribed circle, and a corner radius of 3/64 inch. The manufacturer grade is AC830P, suited for universal and multi-material applications.

This insert is intended for use on CNC turning centers and manual lathes in production and job-shop environments. The EMU chip breaker geometry and negative rake angle make it appropriate for medium to heavy turning passes on a range of workpiece materials. The secondary workpiece material codes M and P indicate suitability for steel and stainless steel applications. Licensed machinists, CNC operators, and toolroom technicians are the primary users of this insert type.

Key Features

• Solid carbide substrate with CVD-applied Al2O3 coating for thermal and abrasion resistance
• TNMG543EMU geometry with EMU chip breaker and negative rake angle of 4 degrees
• 60-degree triangular insert shape with neutral hand orientation
• 5/8-inch inscribed circle and 3/64-inch corner radius for precise edge geometry
• Conforms to ANSI and ISO 13399 standards for interchangeability verification
• Compatible with clamp and pin insert holding methods

Compatibility

Designed as an OEM-style replacement for TNMG543EMU-style turning inserts used in standard TNMG toolholders with clamp or pin retention, conforming to ANSI and ISO 13399 insert seating standards.

Installation Notes

Installation should be performed by a qualified machinist or CNC toolroom technician. Power down and lock out the machine before changing inserts. Seat the insert fully and evenly in the toolholder pocket before tightening the clamp or pin to avoid edge chipping. Inspect the insert seat and clamp for wear or debris before each insert change.