Iscar 5502201 Turning Insert Tpmt 321 IC20 Carbide

Product Description

The ISCAR 5502201 is a solid carbide, uncoated turning insert in the TPMT 321 geometry, part of the Isoturn series. It features a 60-degree triangular insert shape with an 11-degree relief angle and a 3/8-inch inscribed circle. The corner radius measures 1/64 inch (0.016 inch), and the insert thickness is 1/8 inch. Designed for precision turning operations, this insert uses screw-style holding and conforms to ISO 13399 standards. It is suited for machinists and CNC operators performing external turning on a range of workpiece materials across general machining environments.

This insert is rated for universal primary workpiece material compatibility, covering ISO material groups H, K, M, N, and S. Typical applications include external turning on lathes and turning centers in job shop, production, and maintenance machining settings. The Isoturn series is designed for consistent performance in light to moderate material removal, with a maximum depth of cut of 0.157 inch (3.99 mm). The IC20 grade is an uncoated solid carbide, making it well suited for applications where coated grades may not be preferred, such as certain non-ferrous or specialty material cuts.

Key Features

• TPMT 321 insert geometry with 60-degree triangular shape and 11-degree relief angle
• IC20 uncoated solid carbide grade for broad material compatibility
• 3/8-inch inscribed circle with 1/64-inch corner radius for precision finish
• Maximum depth of cut of 0.157 inch (3.99 mm)
• Screw-style insert holding method for secure seating in compatible toolholders
• Conforms to ISO 13399 standards for insert identification and interoperability

Compatibility

Designed as an OEM-style replacement turning insert for TPMT-style toolholders compatible with the TPMT 321 insert size code. Suitable for use across ISO workpiece material groups H, K, M, N, and S as identified by the manufacturer.

Installation Notes

This insert is installed by qualified machinists or CNC setup technicians. Before replacing an insert, ensure the machine is powered down and the spindle is fully stopped. Use the appropriate torx or hex key to loosen the clamping screw, seat the insert fully into the toolholder pocket, and torque the screw according to the toolholder manufacturer specifications. Inspect the insert seat and chip breaker pocket for debris before installing a new insert.