Backing bearings have been specially developed for cold rolling mills of the cluster type, but can also be used for other applications, e.g. straightening or bending machines. Backing bearings are roller bearings having a particularly thick-walled outer ring and can be mounted on stationary support shafts to form back-up or straightening rolls. 

NEWORLD backing bearings for cold rolling mills are produced in many designs but are generally based on Double or three-row cylindrical roller bearings, Single row needle roller bearings and Double row tapered roller bearings.

https://www.neworld-bearing.com/product-list-backing-bearings.html