Materials:

Outer rings: UNI 100Cr6 case and core hardened steel with hardness 60±2 HRC
Inner rings: UNI 100Cr6 core hardened steel with hardness 60±2 HRC
Slewing bearings: UNI 16CrNi4 case and core hardened steel with hardness 60±2 HRC
Rolling system: UNI 100Cr6 core hardened steel with hardness 62±2 HRC

Tolerances: according to DIN 620 Regulation
Precision class: according to P6 class
Radial clearance: nearly C0 class, according to DIN 620 Regulation
Load coefficients: calculated according to ISO 76 and ISO 281 Regulations

Single backing rollers are built with two or more full complement crowns of cylindrical rollers separated by spacers integrated into the outer ring. The large load capacities, both dynamic and static, of this type of counter rollers mean that they are used in large quantities in those steel sheet flattening or straightening machines that work continuously and in severe operating conditions. These bearings also guarantee good axial load capacities suitable for counteracting the axial thrusts that are inevitably generated in the applications mentioned above.