The four-row cylindrical roller bearings have compact structure, higher stiffness and radial load carrying capacity, but not capable of carrying axial load. Because of no rib on inner rings, so inner rings and outer ring assemblies can be mounted respectively, cleaning, inspecting and dismounting are very convenient.
This type of bearings have higher precision, and the bearings itself has lower friction comparing with other bearings. Therefore, four-row cylindrical roller bearings are especially applied to high speed and high precision rolling mill, big mills, etc
