Pete
Bearings are tougher than you think in this case they may be K already , think of the pounding they take on a car / truck etc.
I think it's on the SKF site but may be Barden but they demonstrate fitting AC spindle bearings the a nylon tool and a hammer , yes it only put force on the inner or outer race as needed not both.
In this case the as I posted the spindle should be attended to , but I fear the OP will now have the devil of a job getting it off
Stuart