Sandvik Coromant 5746138 R390 Milling Insert Carbide 2030

Product Description

The SANDVIK COROMANT 5746138 is a solid carbide milling insert designed for high-performance indexable milling operations. It carries manufacturer grade 2030 and features a dual-layer TiAlN and TiN PVD coating for heat and wear resistance. The insert is parallelogram-shaped with a 90-degree included angle, a positive 22-degree rake angle, and a corner-rounded cutting edge style. With 2 cutting edges and a right-hand orientation, it suits demanding metal removal applications in the R390 cutter series. A licensed machinist or tooling technician familiar with indexable insert tooling handles installation and indexing on the shop floor or in production environments.

This insert is intended for milling steel, stainless steel, superalloys, and titanium — material grades P30, M25, and S20. The R390 series platform is widely used in shoulder milling and face milling applications across both job-shop and production settings. The MM chip breaker geometry supports reliable chip control across the covered material range. Maximum depth of cut reaches 15.70 mm (0.6181 inches), making it suitable for moderate-to-aggressive radial engagement passes in roughing and semi-finishing operations.

Key Features

• Solid carbide substrate with TiAlN and TiN PVD dual-layer coating for elevated thermal and abrasion resistance
• Parallelogram insert shape with 90-degree included angle for true shoulder milling capability
• Positive 22-degree rake angle reduces cutting forces on difficult materials including superalloys and titanium
• MM chip breaker geometry designed for steel, stainless steel, and superalloy machining
• 2 cutting edges per insert, right-hand orientation, screw-held mounting method
• Maximum depth of cut 15.70 mm (0.6181 inches) supports roughing and semi-finishing passes

Compatibility

Designed for use in the SANDVIK COROMANT R390 cutter series. ANSI and ISO code: R390-17 04 16E-MM 2030. Insert size code 170416. Cutter series compatibility confirmed for R390 platform toolholders accepting this insert geometry.

Installation Notes

Installation is performed by a qualified machinist or CNC tooling technician. Disengage the machine spindle and confirm zero-energy state before indexing or replacing inserts. Use the appropriate Torx or hex key to the toolholder manufacturer's specified seating torque — consult the R390 toolholder documentation for the correct fastener specification. Inspect the insert pocket and clamping screw for wear or damage before seating the new insert.