One: bearing grease injection method:
The effect of the amount of grease on the sealing performance A large number of tests have proved that when the amount of grease is less than about 30% of the volume of the internal cavity of the imported bearing, the grease is not lost due to the fact that the grease does not reach saturation in the bearing. When the amount of grease is more than 30%, the inside of the bearing is partially saturated. When the amount of grease is 50%, the grease in the bearing is fully saturated, and the excess grease is "squeezed out". In particular, sometimes, although there are not many fat injections, the grease injection method is not standardized and scientific, resulting in uneven grease in the bearing cavity, and local saturation in the bearing may occur, resulting in early rapid "squeezing".
As for the homogenization process, it is recommended that the rotation speed be increased a little. Sealed bearing test and evaluation The test method of sealed bearing is developed for different performance characteristics and uses of sealed bearings. The focus is different, and the test content is different, but each performance test is an important special study. The content and sealing of imported bearing test and evaluation methods are also important means to verify and improve design and quality control.
1, manual lubrication
When it is found that the lubricating oil of the imported bearing is insufficient, it is the most primitive method to use the oiler to supply oil at the right time. This method is difficult to maintain a certain amount of oil, and the risk of forgetting to refuel due to negligence is large, and is usually only used in light load, low speed or intermittent motion. It is preferable to provide a dust cover or a ball valve on the oil hole, and use a felt, cotton, wool or the like as a filtering device.
2, oil pad lubrication
The oil in the oil sump is applied to the shaft diameter surface by capillary action of the oil pad. This method allows the friction surface to be kept clean, but the dust can also clog the capillary holes and cause insufficient oil supply. Oil pad lubrication is usually only 1/20 of oil lubrication.
3, oil ring lubrication
Can only be used for lubrication methods on the horizontal shaft. The oil in the oil sump is brought into the bearing by a ring that is hung on the shaft and rotatable. Suitable for medium and high speed imported bearings with shaft diameters greater than 50mm. The oil ring is preferably seamless. When the aspect ratio of the imported bearing is less than 2, only one oil ring can be used, otherwise two oil rings are required.
4, splash bearing
Lubricating oil that is splashed by the slamming of the rotating parts in the fuel tank is supplied to the inlet bearing and is suitable for bearings of higher speed.
5, oil bath lubrication
A method of lubricating a part of a bearing into a lubricating oil. This method is often used for vertical shaft thrust bearings and is not suitable for radial inlet bearings for horizontal shafts.
For more information and purchase please visit: https://www.supplyforever.com
