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Because of the new spinning equipment dust, heat and high-speed requirements, using a large number of sealed bearings. These sealed bearings run for a certain period because the internal oil, resulting in damage to the bearings dry grinding. As imports of air spinning machine-sealed bearings, quantity, good material, but the last several years, due to inability to clean and add grease, the seal bearing a large number of damaged scrapped, increasing the equipment failure and unnecessary expenses. Now describes two simple and effective method of cleaning and refueling. The first sleeve clean fuel, which is suitable to both ends of the bearing housing with a gap of sealed bearings. The method is first soaked in kerosene bearing a 1 h 2h, then according to the bearing outer diameter. Sealed bearings making special sleeve, both clean, but also fuel. An inner diameter slightly larger than the outer diameter of the sleeve bearing 0.05 mm ~ 0.08 mm, slightly lighter than the bearing point. Cleaning refueling steps: adding an appropriate amount of kerosene in a sealed bearing sleeve bearing pressed in by hand, the use of the bearing itself gap, kerosene squeezed out, repeated 1-2 times; required to join the inner sleeve clean and dry before pouring grease into the bearing sleeve with a press, press down gently, bearing fueling much flexibility as required. The second applies to Four-Row Taper Roller Bearing, the one gap and positioning screw hole. Use screw hole communicating with the bearing clearance, the first sealed bearings soaked in kerosene 1 h ~ 2 h, with a special suction nozzle and kerosene oil gun repeatedly into the bearing 2 to 3 times the required grease gun after pouring dry Grease can be added. The above approach for a variety of sealed bearings and special sealed bearings, sealed bearings such as these can be cleaned regularly refuel, will be able to extend its service life and can save a lot of money and reduce the incidence of broken down vehicles