1. Product Overview The W208PPB12 is heavy-duty agricultural square bore ball bearing with spherical outer ring and multi-layer composite mud-proof seals. Designed for 1-1/4 inch square drive shafts, widely matched to disc harrows, round balers and combine harvesters. Spherical outer surface provides self-aligning function to compensate minor assembly misalignment. Fully sealed non-relubricated structure, ideal interchange spare part for various farm tillage equipment. 👉 Get