The main advantage of a dual motor drive is that each work roll is individually driven. If one roll gets damaged and needs to be ground down, the other roll does not have to be ground down to the same diameter. This allows each motor drive to compensate for the different diameters.
Expanded metal is a common product throughout the world and much expanded metal goes through a rolling mill. These are normally very large 2-high or 4-high rolling mills that are very expensive. The top two rolls is where the reduction is taking place.
Precision measuring normally requires an entrance gauge, which records the thickness of the material going into the rolling mill.
All rolling mills should be equipped with an apron to feed and receive the part or strip. The material can be niobium, tantalum, titanium, or aluminum. These rolling mills require very large separating forces and an apron to feed and receive the small pieces at the passline of the rolls.
