Four row tapered roller bearings can accommodate combined (radial & axial) loads at low to moderate speeds. They are used almost exclusively in work roll applications such as rolling mills.
Depending on their design, four-row tapered roller bearings provide the following main features and benefits:
Long service life
The four-cup design (four separate outer rings) provides optimal load distribution over all four rows of rollers.
Enhanced Operational Reliability
Optimized surface finish on the contact surfaces of the rollers and raceways supports the formation of a hydrodynamic lubricant film.
Improved Wear Resistance
In particular , SKF explorer bearings are made of extremely clean and homogenous steel and undergo a unique heat treatment, which improve the resistance to wear.