Sandvik Coromant 7564378 R390 Milling Insert Solid Carbide

Product Description

The SANDVIK COROMANT 7564378 is a solid carbide milling insert in the R390 series, designed for right-hand, positive-rake face milling operations. It carries a CVD-applied triple-layer coating of TiCN, Al2O3, and TiN under manufacturer grade 4340, placing it in the P40, M40, and K40 material grade classifications. The insert features a parallelogram shape with a 90-degree included angle, two cutting edges, a corner radius of 0.0315 inches (0.80 mm), and a maximum depth of cut of 0.6299 inches. The PH chip breaker geometry supports controlled chip flow across a range of feed rates. This insert is installed by machinists and CNC tooling technicians on milling centers running ferrous and mixed-material workloads.

The 7564378 is engineered for milling steel, stainless steel, and cast iron in both roughing and semi-finishing applications. It is dimensionally sized to the R390-17 insert format, with an inscribed circle of 0.3780 inches and a thickness of 0.1875 inches, making it suitable for R390-series cutters in production environments where consistent tool life and chip control across P, M, and K material classifications are required. The insert is screw-held and single-sided. Typical applications include shoulder milling and ramping on machining centers in job shop, aerospace, and general metalworking environments.

Key Features

• CVD triple-layer coating: TiCN, Al2O3, TiN for wear resistance across steel, stainless, and cast iron
• Manufacturer grade 4340 rated for P40, M40, and K40 material classifications
• Parallelogram insert shape with 90-degree included angle and positive 10-degree rake angle
• Corner radius of 0.0315 inches (0.80 mm) with corner-rounded cutting edge style
• Two cutting edges, right-hand orientation, screw-held mounting
• PH chip breaker geometry for controlled chip evacuation at varied feed rates
• Complies with ANSI and ISO standards; ANSI/ISO code R390-17 04 08M-PH 4340

Compatibility

Designed for use with Sandvik Coromant R390-series milling cutters. Insert size code 170408 confirms fitment within the R390-17 cutter family. Verify cutter body and pocket geometry against the R390 series specification before installation.

Installation Notes

This insert is installed by qualified machinists or CNC tooling technicians. Power down and lock out the spindle before changing inserts. Use the appropriate Torx or hex key to secure the clamping screw to the cutter body seat; do not overtighten or use impact tools on the insert screw. Inspect the insert pocket and seating surface for chips or damage before seating a new insert.