The IKO IRT15202 is an inner ring in the IKO Inner Rings product series. The supplied data identifies it as a metric inner ring for shell-type use and lists the order number as IRT1520-2.
The product data lists the IRT15202 bearing material as high carbon chrome steel. The introductory specification also describes the inner ring as high carbon steel for assembly with the listed shell-type bearing components.
The IRT15202 is specified to assemble with selected TA_Z, TLA_Z, and YT series bearing numbers. Use the listed part numbers to confirm component matching.