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.
the friction produced by objects such as wheels or ball bearings is called rolling friction
because there is grease between them......
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.
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.
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.
the friction produced by objects such as wheels or ball bearings is called rolling friction
Lubrication and ball bearings both reduce friction.
contact
because there is grease between them......
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.
Decrease friction .
it is when friction occurs when moving parts have ball bearings.
In case of rolling contact bearings there is either point contact or line contact between rolling elements and races of the bearing depending on whether it is ball bearing or roller bearing... In case of plain or journal bearings contact is generally area contact. Hence friction is reduced in rolling bearing as compared to a plain bearings.
Anti-Friction. Plain bearings have surfaces that rub together, like sleeve bearings. In roller bearings and ball bearings, the surfaces roll and do not (that is, should not) slide. If they slide they destroy themselves quickly.