In corrugated cardboard manufacturing, the efficiency of corrugating rollers strongly depends on the quality of the bearings used. Traditional configurations include either two spherical roller bearings or a “fixed/floating” arrangement combining spherical and cylindrical roller bearings.
Spherical roller bearings, such as the ISO 240 K30-AH series, provide high load capacity and self-aligning capability, helping to compensate for inevitable misalignments. However, grease-lubricated bearings on the floating side may experience risks such as seizure or locking.
For this reason, a mixed solution is increasingly adopted: a spherical roller bearing on the fixed side and a cylindrical roller bearing on the floating side. This setup allows axial expansion of the corrugating roll while improving operational stability.
In increasingly severe working conditions, driven by high steam temperatures and heavy loads, lubrication systems are often pushed to their limits. In response, Faro Bearings also proposes thermal insulation of the cylinder bore by using an internal steel tube for steam flow, creating an insulating air layer that improves operating conditions.
In conclusion, bearing selection and management remain critical factors in ensuring reliability and efficiency in corrugated board production lines.