Use and Maintenance of Elevator for Wellhead Tools of Drilling Equipment

The elevator is used to carry drilling tools when tripping in, which is quite simple to use. Of course, there are many kinds of elevators, but when you see that thing, you will use it. Hehe, maintenance is actually to lubricate the bearing, including the part in contact with the ferrule, to ensure flexibility. In general, engine oil can be used. Actually, you should give me full marks for other oils.