FINE crawler crane slewing bearings are usually used for low revolution while shaking and strained with an enormous axial force, moment and in some parts with radial force simultaneously.
Consequently the requirements for loading are stricter than ordinary bearings. If the selection of the bearing has been wrong it will cause a great damage. Hence it is necessary to evaluate the exact forces acting on the slewing ring and to select the suitable slewing ring.

FINE slewing ring bearing material is 42CrMo or 50Mn, the raceway hardening is 4mm to 6mm, depending on the bearing design.
FINE have special strong design on the sealing system and the surface protection because of the special condition for the slewing rings used for the offshore. FINE specific design satisfy the main manufacturers of the crawler cranes.

Class-certification is available for all bearings, at additional cost. If the original calculations for the bearings are no longer available, we can have them recalculated by our own structural engineers.