ur wheel will either be making a squeeking noise. or there will noticeably be a performance downgrade in the wheel or tyre.
If you need replacements, they can be bought at a hardware store. If you mean applications/uses ... bicycle wheels have ball bearings. Lots of rolling objects that move around an axle have either needle bearings or ball bearings or roller bearings.
Need to know what vehicle and what year for an answer
There are no replaceable camshaft bearings. You will need to replace the head or heads.
Wheel bearings? Axle bearings? Differential carrier bearings? Engine main bearings? Engine rod bearings? Engine cam bearings? Need more info to help you.
because there is grease between them......
Bad ball bearings. Check to see the bearings and the casing does not need to be replaced.
No, just replace the bearings and the race.
They are sealed bearings which need to be pressed into hub. There is no fixing them- replace only.
no you dont
you need to buy bearings and bearing races most times they will come as a set you will also need axle seals and you will need bearing grease
We need to know which bearings you speak of, there are many.
It all depends on the bearings that you need to replace! Get some quotes! If it is bearings inside the engine, then the mechanic you go to is going to have pull the engine anyways, so if there are no other problem with your engine but some bearings then i would just have the bearing replaced, but if you have other problems due to the bearings going out, then i would replace the engine. Hope i helped