Compared with dry friction and solid grease without lubrication, gear liquid lubrication has the following advantages:
(1) The wear degree of parts is obviously reduced;
(2) reducing the energy loss of friction,
(3) Less heating of parts;
(d) Each friction joint can bear heavy load;
(5) Improve the safety and service life of friction parts.
(6) Greatly reduce the noise when the gear is running.
Then the oil-sealed planetary ball mill naturally has the above advantages. I checked the patent: Oil-sealed planetary ball mill, which was applied by Changsha Miqi Company!