Sumitomo 19RBAFC Turning Insert TNMG432EMU AC830P Carbide

Product Description

The SUMITOMO 19RBAFC is a solid carbide CVD-coated turning insert designed for precision metal cutting on CNC lathes and turning centers. Carrying the ANSI designation TNMG432EMU and ISO code TNMG220408N-MU, this insert features a 60-degree triangular shape, a negative rake geometry, and a neutral hand orientation. The AC830P grade coating provides wear resistance suited to a range of ferrous and stainless workpiece materials. With an inscribed circle of 0.5 inches and a corner radius of 0.03 inches, it delivers consistent edge performance in medium to finishing cut applications. Installation requires a compatible clamp and pin holding system.

This insert is intended for use in production and job-shop turning operations where consistent surface finish and dimensional accuracy are required. The EMU chip breaker geometry supports stable chip control across varying feed rates. Primary workpiece materials are categorized as P (carbon and alloy steels) and M (stainless steels), with secondary universal application. It is suited to both light finishing and moderate roughing passes when paired with an appropriate toolholder.

Key Features

• AC830P manufacturer grade with CVD coating for extended tool life on steel and stainless
• TNMG432EMU chip breaker geometry supports controlled chip evacuation across varied feed rates
• Negative rake, neutral hand orientation compatible with standard TNMG clamp-and-pin toolholders
• 60-degree triangular insert shape provides three usable cutting edges
• 0 degrees relief angle (clearance code N) with tolerance code M for consistent seating
• Conforms to ANSI and ISO 13399 standards for interchangeability and documentation

Compatibility

Designed for use in TNMG-style clamp and pin toolholders accepting a 0.5-inch inscribed circle triangular insert. Compatible with material grades C5, C5A, and C6 tooling systems. Primary workpiece materials are P (carbon and alloy steels) and M (stainless steels).

Installation Notes

This insert is installed by a machinist or tooling technician into a compatible TNMG clamp-and-pin toolholder. Ensure the machine spindle is fully stopped and the turret is indexed to a safe position before changing inserts. Seat the insert fully against the pocket locating surfaces before tightening the clamp to avoid edge chipping or premature wear. Follow the toolholder manufacturer torque guidelines for the clamp screw.