I assume you're trying to ask for help for yourself, but you'd need to ask a more complete question to get someone who does know how to do this to give you a useful answer.
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.
because there is grease between them......
The entire structure acts like a lightning rod- it connects the negative charges in the clouds to the positive charges in the ground. Normal houses especially need lightning rods because the there isn't much metal (or steel in this example) that can conduct the induced current like a steel skyscraper has the ability to.
to make a javelin you need a fiberglass rod and a steel tip
You need wire, a nail, and some steel sheet cut from a can. Then you need a bell. Wind the wire round the nail to make an electromagnet. Nail the strip of steel to a wooden block. Fix the electromagnet so that it pulls the steel when switched on. Then you need to make a switch which will be another arrangement of thumbtacks. So when the magnet switches on the steel pulls away from the tack and breaks the circuit. The steel hits the bell but it returns dues tothe magnet being switched off.
Wheel bearings, main bearings, connecting rod bearings, cam bearings, axle bearings, carrier bearings, pinion bearings and so on, need to be more specific.
DEFINITION OF PLANNING OF TIMBER
Wheel bearings? Axle bearings? Differential carrier bearings? Engine main bearings? Engine rod bearings? Engine cam bearings? Need more info to help you.
They come Krunk K2 bearings!
no
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
When you are calculating a force.
Yes, any skate can take either bearing but you need to have the right type of wheel and spacer per bearing. ie, if you have mini bearings you need mini hub wheels and spacers that fit the mini bearings. If you have standard bearings you need standard hub wheels and spacers that fit the standard bearings.
The best way to anchor steel shelving to the floor is with Ramset Dynabolts for concrete floors and Timber Floor Fixing Screws for wooden floors. If the depth is over four times the size of the height then the shelving shouldn't need fixing.
We need to know which bearings you speak of, there are many.
Yes