We all know that the working environment of sand washing machine is very dusty, that is, the working conditions of sand washing machine are bad. In order to ensure the normal operation and life of sand washing machine, we need to give Raymond powder from time to time. Add butter to the machine for lubrication.  However, most customers do not know the frequency and amount of butter used, which is very likely to cause wear and tear on the machine. I have found a lot of information to find out how to properly add butter to the sand washing machine. In general, the main grinding rolls, grinding rings and bearings of the sand washing machine need to be lubricated with grease. However, these are all done according to the grease gun, especially for large machines such as sand washing machines. It is very difficult to refuel if you do not use a grease gun.