Sumitomo 19RB807 Turning Insert TNMG432ENG AC830P

Product Description

The SUMITOMO 19RB807 is a coated solid carbide turning insert in the TNMG432ENG geometry with manufacturer grade AC830P. It is a 60-degree triangular insert with a neutral hand orientation and a negative rake and clearance configuration. Designed for use on CNC lathes and turning centers, this insert suits roughing and medium machining operations on steel and stainless steel workpieces. The CVD coating process delivers a balance of moderate wear resistance and toughness, making the AC830P grade effective across a range of material hardness levels. Licensed machinists and CNC operators are the primary users of this insert.

This insert fits typical TNMG-style toolholders used in external turning applications on CNC lathes. It is suited for machining steel (ISO P) and stainless steel (ISO M) workpieces in both production and job-shop environments. The chip breaker designation ENG targets roughing and medium material removal rates. The insert is sold individually with a minimum order quantity of 10 pieces, consistent with standard indexable tooling procurement practice. It conforms to ANSI insert code TNMG432 and ISO insert code TNMG220408.

Key Features

• CVD-coated carbide construction for extended tool life in steel and stainless steel cutting
• ENG chip breaker geometry optimized for roughing and medium machining operations
• Negative rake and 0-degree relief angle for stable, high-force cutting applications
• Neutral hand orientation compatible with both right- and left-hand toolholders of TNMG style
• Dual holding method support: clamp and pin for flexible toolholder compatibility
• Conforms to ANSI and ISO 13399 standards for interchangeability and documentation

Compatibility

Designed for use in TNMG-style insert toolholders compatible with ANSI insert code TNMG432 and ISO insert code TNMG220408. Suitable for primary workpiece materials classified under ISO P (steel) and ISO M (stainless steel). Material grades C5, C5A, and C6 apply.

Installation Notes

This insert is installed by a qualified CNC machinist or tooling technician. Ensure the machine spindle is stopped and all axes are in a safe position before indexing or replacing inserts. Seat the insert fully in the toolholder pocket and engage the clamp or pin per the toolholder manufacturer's torque specifications. Inspect the insert seat and chip breaker groove for debris before each insert change to maintain consistent tool geometry.