What should I do when the cardan shaft cannot add oil?


When using the SWC350BH universal joint shaft, the four […]

When using the SWC350BH universal joint shaft, the four-point lubrication method is generally used. Therefore, during the assembly of the assembly, the operator will pre-lubricate the bearings in the four directions one by one, but sometimes they will encounter re-lubrication. What should we do if there is no oil?

What should I do when the cardan shaft cannot add oil?

1. Whether the oil filling hole is blocked
If the grease nipple is smashed into the hexagonal deformation or the grease nipple is rusted, etc., the oil circuit will be blocked, and the grease nipple should be replaced in time. During the replacement process, keep the area around the interface clean, and do not allow mechanical impurities, dust and sand to be mixed in.

2. Insufficient intake pressure of grease gun
The high-pressure oil injector is an oil injection device powered by compressed air, which uses the action of a pump to generate high pressure for the oil, and uses high pressure for oil injection. Pay attention to starting the air compressor before use, and prepare the compressed air of 0.6-0.8 MPa. When connecting, clean the connecting parts and tighten the nut with a wrench to avoid oil leakage.

3. It is not suitable for filling grease
The working principle of lubricating grease is that the thickening agent keeps the oil in the position where it needs to be lubricated. When there is a load, the thickening agent releases the oil to play a lubricating effect. If the temperature difference between winter and summer of the environment where the equipment is located is large, pay attention to timely replacement of seasonal grease. The universal joint shaft assembly generally uses 3# general-purpose lithium-based grease grease, which is used in different mechanical equipment within the working temperature range of -20℃-120℃, and has good water-resistant mechanical safety, rust resistance and oxidation stability. .

4. Misjudgment by the operator
The oil delivery rate of a common pneumatic high-pressure lubricator is about 0.85L/min, and the bearing cavity is filled with oil. The contract is 6.85s. At the same time, taking into account the factory pre-injection and daily grease retention, the actual oil injection time is about 3 -5s. Therefore, the time for adding and changing grease should be determined according to the specific usage.

Through the above analysis, we can understand that when encountering the problem of refueling, there is no need to panic to determine that the structure cannot be refueled and forcibly refueling. First, check and analyze the above conditions one by one. If the problem cannot be solved, we will contact the manufacturer. Just repair it.