Fitting wheel bearings the good old way (and cheaply).
What you need :
- a long enough threaded shaft
- washers and nuts
- a pair of sockets with the correct size (covering enough of the outer race of the bearings, that is).
When assembled, this is how the "tool" will look like
The sprocket carrier is easier to move around than a wheel and often comes equipped with only one bearing, which makes it a better case to try your new tool.
Fit the threaded shaft in the sprocket carrier's hole and slip on the sockets, one on each side, then washers and finally nuts. Screw until everything looks tight and aligned (the sockets should be secured straight on the bearing's race), then use the spanners on the nuts to have them to push the sockets further and make the bearing move forward in the slot. Unbolt everything the other way round when the bearing is not moving any further.
Your tool should now also work the same way on wheels ;)