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What are the lubrication methods of sliding bearings

wallpapers Tech 2020-05-26
1. Manual oil
When it is found that the lubricating oil of the bearing is insufficient, it is the most primitive method to supply fuel with a lubricator in a timely manner. This method is challenging to maintain a certain amount of oil, and there is a higher risk of forgetting to refuel due to negligence. It is usually only used for light load, low speed, or intermittent exercise. Dust caps or ball valves should be installed on the oil filler holes, and felt, cotton, wool, etc. should be used as filter devices.
 
2. Drop point lubrication
From the container through holes, needles, valves, etc. to supply a substantially fixed amount of lubricating oil, the more common is the drip oil cup. The amount of oil dripping varies significantly with the viscosity of the lubricating oil, the bearing clearance, and the position of the oil supply hole. Used for light load and medium load bearings with a peripheral speed of less than four ~ 5m / s.
 
3. Oil ring lubrication
It can only be used for the lubrication of horizontal shafts. The rotatable ring that is attached to the shaft brings the lubricating oil of the oil sump into the bearing. Suitable for medium and high-speed bearings with shaft diameter greater than 50mm. If the oil ring is seamless when the bearing width to diameter ratio is less than 2, only one oil ring can be used, otherwise two oil rings are required.
 
4. Oil line lubrication
The capillary action and siphon action of the oil rope lead the lubricating oil in the oil cup to the bearing, which is used for light and medium load bearings with a peripheral speed of less than 4 to 5 m / s. The oil rope also has a filtering effect.
 
5. Oil pad lubrication
Using the capillary action of the oil pad, apply the oil in the oil sump to the surface of the shaft diameter. This method can keep the friction surface always clean, but the dust will block the capillary holes and cause insufficient oil supply. The oil supply of oil pad lubrication is usually only 1/20 of oil lubrication.
 
6. Oil bath lubrication
A method of immersing a part of the bearing in lubricating oil. This method is often used for thrust bearings of vertical shafts, but not for radial bearings of horizontal beams.

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Tag: bearing