In marine line
2006-11-16 21:16:13 · 6 answers · asked by gates_of_rome01 1 in Cars & Transportation ➔ Boats & Boating
any bearing made of self lubricating material ( eg: nylon spindles and bearings of precision controls) or which can get lubrication from ambient medium(eg: water lubricated stern tube bearing, rudder pintle bearing) or the material and nature of work such that it does not need any lubrication ( eg: diamond bearing)
2006-11-23 17:24:04 · answer #1 · answered by Anonymous · 0⤊ 0⤋
One long answer you received was basically a good pull on your leg.
One type of bearing has a spring in it. You fill it with grease, and the pressure from the spring pushes the grease back out. Because the bearings are surrounded by pressurized grease, it keeps water from getting in (at least until you've lost all your grease). But, technically, you don't lose the grease. You'll know where it is. It will be all over your rim.
So the other type (self lubricating--which to me is a misnomer) doesn't use a spring to keep the water out. Instead it uses a seal to keep the grease in and the water out. Therefore, no (or a lot less) grease ends up on your rims.
2006-11-18 18:36:51 · answer #2 · answered by diesel_pusher2 3 · 0⤊ 0⤋
Usually this indicates that they are sealed bearings. The were packed with the proper amount and kind of lube when fabricated and they require no service. If they fail, they are usually inexpensive and you just replace them. Their useage and life is factored into the design of the object that they are being used in.
2006-11-17 04:39:21 · answer #3 · answered by Mikel 4 · 0⤊ 0⤋
self-lubricating composite materials called TRIBO/COMP These materials use graphite fibers combined with a resin and proprietary lubricative pigments.The materials have a high strength-to-weight ratio which is one-fourth the weight of steel and two-thirds the weight of aluminum. These graphite composites exhibit extremely long wear life, low coefficient of friction (as low as .07) and will withstand loads in excess of 30,000 psi. They will also have chemical inertness and good electrical and thermal conductivity.
2006-11-17 00:14:32 · answer #4 · answered by Bushit 4 · 1⤊ 1⤋
A bearing that does not have to be force fed or pressure fed by an oilin system.
2006-11-16 21:22:02 · answer #5 · answered by ? 4 · 0⤊ 0⤋
good grief...i got dizzy reading Bushit's answer. that may be right but it went right over my head. i think it's the new type trailer bearings that are oil filled instead of greased.
2006-11-17 01:37:30 · answer #6 · answered by Anonymous · 0⤊ 1⤋