The LRT152012S is an IKO Inner Rings series metric inner ring identified for use with roller followers. It is described as an assembled inner ring for NAST15R and NAST15, and the supplied data also lists compatibility with RNAF 203212 assembled bearings.
The product is categorized as an Inner Ring. The listed bearing material is high carbon chrome steel, while the detailed title describes the inner ring as high carbon steel.
The supplied dimensions are a 15 mm inside diameter for a 15 mm shaft, a 20 mm outer diameter, and a 12 mm width. The listed mass is 12.0 g.
The LRT152012S is presented under the category path Brand > IKO > Inner Rings. The product introduction identifies it as a metric inner ring for roller followers and as the assembled inner ring for NAST15R and NAST15 units.
The detailed title references NAST15R and NAST15. The side data lists RNAF 203212 under assembled bearings. No additional application or compatibility claims are provided beyond this supplied information.