Chainsaw Repair

There's a 3120 racesaw running sealed bearings, way less use than most work saws, but it works in that application. There are some interesting formulas for evaluating sealed bearing life that is based on rpm, shaft size, etc. Bearings in the 3600 and lower range have an impressive calculated life expectancy. Seems like the shaft to bearing i.d fit could be made vacuum/Pressure rite with the proper sealant?