Iscar 6403069 Turning Insert Umgr 4.0-0.1 IC508 Carbide

Product Description

The ISCAR 6403069 is a solid carbide turning insert in the UMGR 4.0-0.1 geometry, part of the ISCAR MiniCham series. It carries manufacturer grade IC508 and features a PVD-applied dual-layer TiCN and TiN coating for wear resistance and extended tool life in interrupted and continuous turning operations. The insert has a positive rake angle of 3 degrees, a 7-degree relief angle, and a corner radius of 0.0039 inches (0.10 mm). Right-hand orientation and a clamp-style holding method make it compatible with standard MiniCham toolholders. This insert is suited for CNC turning centers and manual lathes where precision and tight corner geometry are required.

The 6403069 is rated for universal primary workpiece material compatibility, covering ISO material groups H, K, M, N, P, and S. This broad material range makes it applicable across steel, stainless steel, cast iron, non-ferrous metals, high-temperature alloys, and hardened materials. It is primarily used in small-diameter internal and external turning, threading, and grooving applications where minimal corner radius is critical. Machinists and CNC operators working in precision component manufacturing, aerospace, and medical part production will find this insert well suited to close-tolerance finishing and semi-finishing cuts.

Key Features

• Solid carbide substrate with PVD-applied TiCN and TiN dual-layer coating for heat and wear resistance
• Manufacturer grade IC508 optimized for a wide range of workpiece materials across ISO groups H, K, M, N, P, and S
• Corner radius of 0.0039 inches (0.10 mm) for tight-tolerance and small-feature turning
• Positive rake angle (3 degrees) reduces cutting forces and is suitable for light finishing cuts
• Right-hand, clamp-held UMGR insert style for secure seating in MiniCham series toolholders
• Irregular insert shape with 7-degree relief angle reduces rubbing and supports free-cutting performance

Compatibility

Designed for use with ISCAR MiniCham series toolholders that accept the UMGR 4.0-0.1 insert style with clamp-style holding. Conforms to ISO 13399 standards for cutting tool data representation.

Installation Notes

Insert replacement should be performed by a qualified machinist or CNC tooling technician with the machine fully stopped, spindle locked, and all energy sources isolated per applicable lockout/tagout procedures. Use the correct clamp screw torque driver recommended by the toolholder manufacturer to seat the insert without cracking the carbide substrate. Inspect the insert pocket and clamp for wear or debris before seating a new insert. Do not use inserts that show chipping, cracking, or coating delamination.