Value Collection ICR39720E Turning Insert RPG42 Carbide

Product Description

The VALUE COLLECTION ICR39720E is a solid carbide, uncoated turning insert designed for use on CNC and manual lathes in metal cutting operations. Conforming to ANSI insert code RPG42 and ISO insert code RPG120300, this insert features a round (R) shape with a 0.5-inch inscribed circle and a 0.125-inch thickness. The bright, uncoated carbide construction and positive side clearance make it well suited for finishing and semi-finishing cuts where a sharp edge and consistent chip formation are critical. It is installed and replaced by machinists and toolroom technicians as a standard indexable insert in a compatible toolholder using a clamp-style holding method.

This insert is appropriate for turning applications on cast iron, non-ferrous metals, heat-resistant alloys, and similar workpiece materials corresponding to ISO material groups K, M, N, and S. The flat-top chip breaker geometry and positive clearance angle of 11 degrees support controlled chip flow at moderate cutting parameters. Typical use cases include external turning, facing, and profiling on production and job-shop lathes where a round insert profile provides continuous cutting edge engagement and extended tool life.

Key Features

• Round insert shape with 0.5-inch inscribed circle for continuous cutting edge and improved tool life
• Solid carbide construction, material grade C2, with bright uncoated finish for sharp, low-friction edge
• Positive side clearance with 11-degree relief angle reduces cutting forces on light-to-medium cuts
• Flat-top chip breaker geometry supports chip control across a range of feed rates
• Clamp-style holding method provides secure seating in compatible RPG-style toolholders
• Compatible with ISO material groups K, M, N, and S workpiece materials

Compatibility

Designed for use in clamp-style toolholders accepting RPG42 (ISO RPG120300) round turning inserts with a 0.5-inch inscribed circle and positive clearance geometry.

Installation Notes

Indexable turning inserts are seated and replaced by machinists; always power down and lock out the machine spindle before changing inserts. Ensure the toolholder pocket and clamp components are clean and free of chips before seating the insert. Verify clamp torque per the toolholder manufacturer specifications and confirm insert orientation before resuming cutting operations.