if you didnt bend it during removeal then it is fine to re-use it.
You have to get a new hub with the bearing in it already.
probably it can be changed but if you change the whole alternator you will gain a new alternator for your engine in opposite of changing only the bearing which is not guaranteed.
Fron or rear?
You need to replace the rear wheel hub - bearing and speed sensor inclusive
Need to change the whole bearing...
The speed sensor may be built into the hub bearing. In that case the whole hub bearing needs to be replaced.
To change your bearing, you need to turn left, right or make an about turn in the given vessel that you are travelling in.
Before changing the radiator on a 2001 Pontiac Montana the coolant must first be drained. After the drain remove the radiator mounts, fans, and hoses. Pull the radiator upwards.
Changing the wheel bearing in a 1992 Toyota is simple. All you do is remove the wheel hub, take off the C clips, use a hammer to remove the bearing which is connected to the C clips. You can also take them into a shop and have them removed.
how do you change a battery on a 2002 Pontiac Montana
I recommend changing it every 50,000 miles unless it is a permanent filter that requires no maintenance.
You cannot change the compressor bearing, however, you can change the clutch bearing. Which one is bad? Is there a noise when the clutch is engaged, or not engaged?