There is a wrie up in the technical section on rebuilding the axle. It includes the wheel bearings. If I were you I would rebuild the whole thing if I opened it up. I priced the bearings through a local shop. All Timkin (same bearing supplier as OEM) bearings for the wheel bearings and knuckle bearings were about $80. I would suggest you get the seal kit from Toyota as several folks have told me that the Napa seal kits are not really as nice.
Here is the write up on the job:
Greg, Timkin is not the OEM suplier of bearings, Koyo is, yes Toyota lists both Timkin and Koyo but Koyo is what your Cruiser came with when new.
Dang I'm starting to sound like OEM Paul