Four row tapered roller bearings

Four row tapered roller bearings is composed of two double row inner rings and one double row outer ring consisting two single outer rings. Between two inner rings,there is one inner spacer.
Among these three outer rings, two central spacer is furnished,which can be used to adjust clearance.When borne by heavy radial load,it can bear simultaneously axial load in two different directions.But its allowed speed is not much,which is mainly used for roller bearing of rolling mill.In recent years,four row tapered roller bearing with double face is manufactured and gradually used in different industries.