VC Victa,
They are not that hard to remove especially if you have a slide hammer which has either two or three arms which lock onto the outside of the bearing and also if you have an internal bearing that is not on a crankshaft it has another tool that has a lip on it to catch onto the inner part of the bearing. You then slide the hammer to pull the bearing off.
If you don't have one of those then you will need a small hammer to tap the old bearing on both sides in order to get it off and making sure that you don't hit the crank shaft.
Maybe some of the other member have their tricks to get them off but this is the way I have done it in the past until I purchased a slide hammer.
