The JF-STOLL 13315306 is a genuine OEM ball bearing, type 172-6209 2RS C4, designed for agricultural machinery. It features an inner diameter of 45 mm, an outer diameter of 85 mm, and a width of 19 mm. The 2RS designation indicates two rubber seals for protection against contaminants, while C4 signifies a greater than normal internal clearance, suitable for applications with higher speeds or temperatures. This bearing is used in various JF-STOLL FCT series forage harvesters, including models FCT 880, FCT 900, FCT 1000, FCT 1050, FCT 1060, and FCT 1360.