The nature of the backing bearings

backing bearings are used particularly thick outer ring to form a group to be mounted on stationary support roller shaft becomes. Pressure on the work rolls through the intermediate rolls to the support rollers and transmitted to the rack system via the saddle. Generally used for multi-roll cold rolling mill equipment, can also be used on other occasions, the backing bearings Multi-row cylindrical roller bearings, bearing itself required accuracy is very high, tapered rollers especially after the elimination of the radial clearance to the inner diameter of the outer diameter section height (T value) is particularly important, in each axis, T values ​​are controlled within 0.005mm, this requires precision bearing components must be high requirements rotator with high runout accuracy performance, high-speed rotation and friction and Little change is more friction mill bearings