The LRT354040 is an IKO inner ring within the Inner Rings product series. The supplied data identifies it as a metric inner ring for assembly with RNAFW405540. Its listed bearing material is high carbon chrome steel, also described in the product data as high carbon steel.
The supplied specifications list a shaft diameter and inside diameter of 35 mm, an outer diameter of 40 mm, and a width of 40 mm. The minimum chamfer dimension is listed as 0.30 mm, while the da dimension is listed from 37.0 mm minimum to 39.0 mm maximum.
The product data identifies the LRT354040 as an inner ring to assemble with RNAFW405540, also written as RNAFW 405540. The listed mass is 95.0 g. No additional compatibility, application, stock, certification, or performance details are provided.