To prevent metal on metal contact. Friction is the destroyer of all moving parts,they must always be lubricated.
inadequate lubrication
Kingsbury manufactures fluid-film thrust and journal bearings in different sizes. On can buy directed lubrication or flooded lubrication thrust bearings or journal bearing.
ball bearings and lubrication.
Leif Floberg has written: 'The damage to the bearings of the Earth (the Big Splash)' 'On journal bearing lubrication considering the tensile strength of the liquid lubricant' -- subject(s): Bearings (Machinery), Lubrication, Lubrication and lubricants 'The earth's invisible walls and their lethal intersections' 'Magma splash serpents'
Making surfaces smooth and hard Rolling instead of sliding (roller bearings instead of sleeve bearings) Lubrication
Making surfaces smooth and hard Rolling instead of sliding (roller bearings instead of sleeve bearings) Lubrication
Robert Oliphant Boswall has written: 'The theory of film lubrication' -- subject(s): Bearings (Machinery), Lubricants and lubrication
All sealed bearings, no lubrication necessary.
Lubrication and ball bearings both reduce friction.
YES, NEW cam bearings increase oil pressure and Improve oil lubrication through out the valvetrain. The cam bearings MUST be in GOOD shape if you want the engine to last.
Your rear wheel may be squeaky due to lack of lubrication, worn out bearings, or misalignment. To fix it, you can try lubricating the wheel bearings, adjusting the alignment, or replacing the bearings if necessary.
A. Z. Szeri has written: 'Fluid Film Lubrication, 2nd ed.' 'Fluid film lubrication' -- subject(s): Fluid-film bearings