tools long punch about 12", deadblow hammer, large socet same diameter as bearing race.
Use punch and hammer and rotate around hitting bearing out by hitting on the race from opposite side of wheel (through axle hole) then after getting one removed remove the spacer then pound the other bearing out. to reinstall place socket over bearing and evenly and with soft blows begin working the bearing in with gradually harder blows. reinstall spacer then put other bearing in.
A lot of times working on a 5 gallon bucket makes this easier.
P.S. I always remove rotors before attempting