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ebonfyre posted a topic in General IHI've been trying to find a rear wheel bearing for my IH 3514 and it seems to be a very scarce item. The manual calls for a part number ST2144 which is impossible to find at a reasonable price. My research indicates the Timken 29681 is a modern replacement for ST2144. I have had limited success finding either of these parts. I did see however that the much more readily available Timken 29680 is identical in size, shape, and practically every other specification except for the “Max Shaft Fillet Radius” dimension. I do not understand what the shaft fillet or it’s radius is to know how important this difference is. Obviously I'm not going to put in a part that simply won't fit, but this is an old beater with plenty of hack-job modifications by past owners to keep her going and if this spec is not critical I'm fine with good enough if it means I can actually keep the tractor in service. Does anyone know if this is an acceptable alternative or am I out of luck?