bearing
bearing
(OP)
what is the amin function of bearing and how the bearing keep the oil inside housing to prevent leakge , and is the pressure of oil transmit to force
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RE: bearing
RE: bearing
a seal should be inplace.
Bearings are made to reduce the
rolling friction. The oil or
grease creates a film between
the rolling contact surfaces and
help to reduce the friction.
What type or kind of bearing are
you asking about?
RE: bearing
RE: bearing
Oil is used for lubrication and sometimes heat removal.
There are many different configurations for retaining the oil: grease was mentioned, oil bath (not suitable for all types bearings), oil-ring lubricated, forced oil, hydrostatic lubrication.
The two basic types of bearings are rolling-element (anti-friction) and sliding bearings.
In all bearings the force is transmitted somehow through the oil since oil is between the metal parts preventing metal to metal contact.
In sliding bearings such as sleeve, tilting pad, there is generally hydrodynamic lubrication which relies on the viscosity of the oil to prevent contact.
In rolling element bearings there is generally elastohydrodynamic lubrication (I think that's thre right word). The viscosity of the oil goes up greatly under pressure.
Try some searches on google and try to form more specific questions.
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RE: bearing
The fluid film is based on the operating viscosity of the oil, you need to select the proper oil viscosity to keep the fluid film thick enough based on the diameter and speed of the bearing. FAG has a very good tehcnical article on anti-friction bearing lubrication on their website. Go to www.fag.com and search for WL 81-115 in the library section.
RE: bearing
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RE: bearing
There are vertical shaft applications where the oil level is well above the bearing, in these cases there is a ring mounted on the shaft to promote oil circulation.
RE: bearing
Pesky words. Even when I think I know what IN or IS mean somebody comes along and proves me wrong.