because there is grease between them......
the friction produced by objects such as wheels or ball bearings is called rolling friction
Jimmy Mc Oi
It means what how can the friction be reduced. To answer this question, Friction can be reduced by devices like ball bearings, wheels and lubricants.
A lubricant such as oil and ball bearings are just (2) methods of reducing friction.
The bottom bracket where 3 frame arms meet is supplied with ball or roller bearings which are able to reduce friction very substantially. There are ball or roller bearings also in the gear changing mechanism, in the top and bottom of the "headstock", the front tube into which the handlebar fits, in the pedals, and in the hubs of both wheels.
the friction produced by objects such as wheels or ball bearings is called rolling friction
I never heard of friction reducing friction. You can reduce friction by using lubricants, as well as using wheels (as in ball bearings).
Machine parts use ball bearings to reduce friction, making it easier to move the moving parts and producing less wear on the parts.
Because they're a good way to reduce friction and help wheels and axles to spin smoothly and effortlessly.
Jimmy Mc Oi
It means what how can the friction be reduced. To answer this question, Friction can be reduced by devices like ball bearings, wheels and lubricants.
Lubrication and ball bearings both reduce friction.
in machineare parts
Ball bearings reduce friction in machinery by presenting a minimal surface area. This is because only very small areas of each ball are in contact with the surface. Therefore,the ball bearing is indeed a very useful thing for machinery to work.
A lubricant such as oil and ball bearings are just (2) methods of reducing friction.
it is a mechanical equipment to reduce friction. It is used in moving parts very often.
The bottom bracket where 3 frame arms meet is supplied with ball or roller bearings which are able to reduce friction very substantially. There are ball or roller bearings also in the gear changing mechanism, in the top and bottom of the "headstock", the front tube into which the handlebar fits, in the pedals, and in the hubs of both wheels.