What should be done when the cardan shaft cannot be filled with oil?

When the SWC350BH universal shaft is used, four-point lubrication is generally used to fill oil, so during the assembly of the assembly, the operator will preoil the bearings in each of the four directions, but sometimes we will encounter the situation that the oil cannot be filled.
What should be done when the cardan shaft cannot be filled with oil?
1. Whether the refueling hole is blocked
If the grease nozzle is smashed into the hexagonal deformation or the grease nozzle is rusty, which will lead to the oil circuit failure, the grease nozzle should be replaced in time. During the replacement process, keep the interface area clean to avoid mechanical impurities, dust, and sand.
2, the butter gun intake pressure is insufficient
The high pressure oiler is an oiling equipment powered by compressed air, which makes the oil produce high pressure with the help of the pump, and uses high pressure to fill the oil. Before use, pay attention to start the air compressor and prepare 0.6-0.8 mpa of compressed air. When connecting, do a good job of cleaning the connecting parts and tighten the nuts with a wrench to avoid oil leakage.
3, adding grease is not suitable
The working principle of grease is that the thickener keeps the oil in the position where it needs to be lubricated, and when there is a load, the thickener releases the oil, thus playing a lubricating role. If the equipment is located in the environment of winter and summer and the temperature difference is large, pay attention to the timely replacement of seasonal grease. The universal shaft assembly generally uses 3# general lithium grease, which is applied to different mechanical equipment in the working temperature range of -20℃-120℃, and has good water-resistant mechanical safety, rust prevention and oxidation stability.
4, the operator's misjudgment
Generally, the oil transmission amount of the common pneumatic high pressure oiling machine is about 0.85L/min, and the bearing cavity is filled with oil equivalent to about 6.85s, while taking into account the pre-injection of the factory, the retention of daily oil and other situations, the actual oil injection time is about 3-5s. Therefore, the time of adding grease should be determined according to the specific use.
Through the above analysis, we can understand that when the problem of filling oil is encountered, there is no need to panic to determine that the structure can not be refueled and forcibly fill the grease, first check and analyze according to the above situation, if the problem can not be solved, we will contact the manufacturer for maintenance.