Sandvik Coromant 5741157 Ceramic Turning Insert Rnga

Product Description

The SANDVIK COROMANT 5741157 is a ceramic turning insert in the T-Max P series, designed for high-speed material removal on difficult-to-machine workpieces. This round-profile insert carries a Manufacturer Grade 650 ceramic substrate with a PVD-applied Titanium Nitride (TiN) coating for extended tool life. It features a negative land cutting edge style, a neutral hand orientation, and delivers 8 usable cutting edges per insert. With a 1/2 inch (0.5000 inch) inscribed circle and 3/16 inch (0.1875 inch) thickness, this insert is suited for production turning operations where ceramic grades are specified. Machinists and CNC programmers working in job shops or production environments will specify this insert for demanding turning passes.

This insert targets primary applications in cast iron turning, with secondary suitability for superalloys and titanium. The T-Max P series designation indicates compatibility with Sandvik Coromant T-Max P toolholders accepting RNGA-style round inserts. Typical use cases include roughing and semi-finishing passes on cast iron components where higher cutting speeds and ceramic grades outperform carbide. The insert is sold individually (quantity of 1 per package) and intended for professional CNC lathe and turning center setups.

Key Features

• Grade 650 ceramic insert with PVD Titanium Nitride coating for thermal and wear resistance
• Round insert shape (RNGA style) providing 8 usable cutting edges per insert
• Negative land cutting edge style for strength on hard and abrasive workpiece materials
• Neutral hand orientation fits standard RNGA toolholder pockets
• Clamp and pin insert holding method for secure seating under high cutting forces
• Primary workpiece material: Cast Iron (ISO K); secondary: Superalloy and Titanium (ISO S)

Compatibility

Designed for use in Sandvik Coromant T-Max P series toolholders accepting RNGA-style round inserts with a 1/2 inch inscribed circle. ISO code RNGA120400T01020650 identifies the full insert specification for cross-referencing with compatible clamping systems. Confirm toolholder pocket geometry and clamping style before substituting inserts.

Installation Notes

Insert seating and indexing should be performed by a qualified machinist or toolsetter with the machine in a locked-out, zero-energy state. Ensure the insert pocket, clamp, and pin are clean and free of debris before seating the insert, as contamination can cause improper seating and premature edge failure. Torque clamp screws per the toolholder manufacturer specification — do not rely on feel alone. Ceramic inserts are brittle compared to carbide; avoid interrupted cuts or conditions outside the grade recommendations without engineering review.