Do you really mean a 60 qt. mixer? That is industrial size and would be about 4' tall. Maybe a 6 qt. mixer? In either case, oil coming out around the shaft cover indicates that someone either over-lubricated the mixer or used the wrong viscosity lubrication. Has it been serviced recently? You might need to take it back to wherever it was serviced.
why are you over loading the machine against the user manual advice
contact hobart for spares or advice on the problem
cut back on the quantity of ingredients in use and make the mixture to the right consistency according to the recipe
if you still have a problem .take it to a hobart authorized repair shop and have it fixed
