Sandvik Coromant 5740518 Round Milling Insert Rckt 4220

Product Description

The SANDVIK COROMANT 5740518 is a round milling insert carrying the ANSI/ISO designation RCKT 19 06 00-PH 4220. Manufactured from solid carbide with a CVD-applied multilayer coating of TiCN, Al2O3, and TiN, this insert is engineered for sustained performance in demanding milling operations. It measures 0.75 inches in diameter (inscribed circle) and 0.25 inches thick, with a corner radius of 0.375 inches and a maximum depth of cut of 0.1098 inches. The PH chip breaker geometry and positive rake angle are matched to the 4220 grade, which targets steel, cast iron, and hard material applications. Licensed machinists and CNC tooling specialists typically specify this insert for RA200-series cutter bodies.

This insert fits milling operations on steel (P-class), cast iron (K-class), and hard materials (H-class), covering a broad range of roughing and semi-finishing scenarios on CNC machining centers and manual milling machines. Its round RCKT profile distributes cutting forces evenly around the full 360-degree included angle, making it effective for copy milling, helical ramping, and contour passes. The PH chip breaker promotes controlled chip formation when cutting steel and cast iron at moderate to high feed rates. Tooling technicians and CNC programmers working in job shops, production machining, and maintenance machining environments will find this a direct-fit insert for compatible cutter bodies.

Key Features

• Solid carbide substrate with CVD TiCN, Al2O3, and TiN multilayer coating for wear and heat resistance
• Round RCKT insert shape with 8 available cutting edges, maximizing insert utilization
• Positive rake angle and PH chip breaker geometry optimized for steel and cast iron
• Corner radius of 0.375 inches supports smooth surface finish and edge strength
• Neutral hand designation suits a wide range of cutter body orientations
• Screw-held mounting method for positive, repeatable insert location in the pocket

Compatibility

Designed for use with RA200-series Sandvik Coromant cutter bodies. Insert size code 190600 corresponds to the RCKT 19 06 00-PH 4220 ANSI and ISO designation. Inscribed circle range is 0.70 to 1.00 inches; thickness range is 0.25 to 0.35 inches.

Installation Notes

Insert replacement should be performed by a qualified machinist or CNC tooling technician with the machine powered down and all axes secured. Use the correct Torx or hex key for the mounting screw specified by the cutter body manufacturer, and verify pocket condition and seating surface before installing a new insert. Inspect the screw and pocket for chips or damage at each insert change. Follow shop safety protocols and machine tool manufacturer guidelines when handling carbide inserts, as edges are sharp.