Sumitomo 19RJBPH Turning Insert Dcmt AC820P Carbide

Product Description

The SUMITOMO 19RJBPH is a DCMT-style indexable turning insert designed for precision external turning operations on CNC lathes and turning centers. Manufactured from solid carbide with a CVD-applied Al2O3 (aluminum oxide) coating in the AC820P grade, this insert delivers thermal resistance and wear durability when cutting ferrous materials. The 55-degree diamond insert shape (code D) provides a sharp, pointed geometry suited to profiling and contour turning. The neutral hand orientation and positive rake angle of 8 degrees reduce cutting forces and heat buildup. Chip breaking is handled by the ESU chip breaker geometry, which is optimized for consistent chip control across a range of feeds and depths.

This insert is intended for steel and steel-alloy workpieces, consistent with the ISO P secondary workpiece material designation. It fits standard DCMT toolholders using a screw-clamp (hole diameter 0.110 inches) holding method. Typical applications include finish to semi-finish turning of carbon steel, alloy steel, and similar P-category materials on production turning equipment. The ISO code DCMT070204N-SU aligns it with ISO 13399 standardized tooling data systems, making it straightforward to integrate into CAM and tool management workflows. It is sold individually with a minimum order quantity of 10 units per order.

Key Features

• CVD-coated Al2O3 in AC820P grade for thermal resistance and extended tool life on steel
• 55-degree diamond insert shape (code D) for profiling, contouring, and finish turning
• ESU chip breaker geometry for controlled chip formation across variable feed rates
• Positive rake angle (8 degrees) reduces cutting forces and spindle load
• Screw-clamp holding method via 0.110-inch hole diameter for secure, repeatable seating
• Neutral hand configuration compatible with both right- and left-hand turning setups

Compatibility

Designed for use in standard DCMT-style screw-clamp turning toolholders. ISO code DCMT070204N-SU confirms fitment to ISO 13399-compliant toolholder systems. Verify toolholder pocket geometry and insert seat dimensions before installation. Optimized for P-category workpiece materials including carbon and alloy steels.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician with the machine powered down and in an e-stop or lockout state before changing inserts. Use the appropriate torx or hex key to tighten the clamp screw to the toolholder manufacturer's specified torque — do not overtighten, as this can fracture the carbide insert. Inspect the toolholder pocket for chips or debris before seating the insert, and confirm the insert is fully seated and flush before resuming operation. Dispose of worn inserts per applicable shop safety procedures for carbide tooling.