That hole the bearing sits in is part of the drive unit. You need a days work to remove the drive unit. Consider a rebuilt unit, with warranty. If you take that apart, you need radial rings, shaft bearing, Synthetic gear oil, the steer shaft, key way.
The top ring can be replaced if you dont need the whole drive unit, but ive never had one repaired at a machine shop. By the time you get drive unit out and apart, then bring to a machine shop, it may be quicker and just as cheap to get rebuilt.
Really *** to spend time taking out a drive unit for some small thing, getting it all back together then...finding out the axle seal and bearing let go! Then you get do all over again...for free. So consider the grief before taking this apart. If you do the tear down way , and remove radial rings. the **** may not come out if rings spun. use a die grinder to open hole, and pray they come out. Good Luck :)
I'm guessing it's the bearing on the bottom of the steer shaft..?
Any machine shop should be able to mend it for you with a sleeve.