Sumitomo 19PWBPB Turning Insert CCMT21.50.5ESU AC630M

Product Description

The SUMITOMO 19PWBPB is a solid carbide turning insert designed for precision metal cutting on CNC lathes and turning centers. It carries the ANSI designation CCMT21.50.5ESU and ISO code CCMT060202N-SU. The insert features an 80-degree diamond shape with a 1/4-inch (0.2500-inch) inscribed circle and a 0.0078-inch corner radius. A CVD-applied aluminum oxide (Al2O3) coating over the AC630M carbide grade provides thermal resistance and wear protection. The neutral hand orientation and ESU chip breaker geometry suit a range of turning operations. Licensed machinists and CNC operators install this insert in compatible toolholders on production and job-shop turning equipment.

This insert is suited for turning operations where controlled chip formation and coating durability are required. The AC630M grade with Al2O3 CVD coating is noted for secondary workpiece material compatibility with stainless steel. The positive rake angle of 8 degrees and the ESU chip breaker support consistent chip control across varying feed and depth conditions. It fits CCMT-style screw-clamp toolholders and is appropriate for both light finishing and moderate cutting passes on metalworking lathes.

Key Features

• ANSI code CCMT21.50.5ESU, ISO code CCMT060202N-SU for direct cross-reference
• AC630M carbide grade with CVD Al2O3 coating for thermal wear resistance
• 80-degree diamond insert shape with 0.0078-inch corner radius for versatile turning geometry
• Positive rake angle (8 degrees) with ESU chip breaker for active chip control
• Screw-clamp holding method, neutral hand, fits CCMT-series toolholders
• Secondary workpiece material compatibility noted for stainless steel

Compatibility

Designed for use in CCMT-style screw-clamp turning toolholders following ANSI and ISO 13399 standards. Secondary workpiece material compatibility is noted for stainless steel (ISO material code M).

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine before indexing or replacing inserts. Use the appropriate torx or hex key to secure the clamping screw to the toolholder manufacturer's specified method — do not overtighten, as this can fracture the insert. Confirm insert seating and shim condition before resuming cuts.