I have a replacement option for you, but since your axle has a 3/4" spindle it uses # LM11949 for both the inner and outer bearing and unfortunately we do not offer a hub for that bearing combination as it is pretty uncommon.
If your current hub is reuseable you can just replace the bearings using # LM11949 and Race # LM11910.
If your hub is needing to be replaced the best option would be to replace your current axle with one that uses a standard bearing combination to make finding replacement... view full answer...