FAG Bearings-SSHB China

The seal should, on the one hand, prevent the lubricating grease or oil from escaping from the fag bearings and, on the other hand, prevent contaminants from entering the bearing. The effectiveness of a seal has a considerable influence on the service life of a bearing arrangement.

Non-rubbing seals

The only friction arising with non-rubbing seals is the lubricant friction in the lubricating gap. These seals can function for a long time and are suitable even for very high speeds. Outside the bearing, gap-type seals or labyrinth seals may, for instance, be used.Space-saving sealing elements are dust shields mounted in the bearing. Bearings with dust shields are supplied with a grease filling.

Rubbing seals

Rubbing seals contact their metallic running surfaces under a certain force. The intensity of the resulting friction depends on the magnitude of this force, the lubricating condition and the roughness of the running surface, as well as on the sliding velocity.

Felt rings prove particularly successful with grease lubrication. Radial shaft seals are above all used at oil lubrication.V-rings are lip seals with axial effect which are frequently used as preseals in order to keep dirt away from a radial shaft seal.Bearings with integrated sealing washers allow the construction of plain designs. FAG offer maintenance-free bearings with two sealing washers and a grease filling.

fag High temperature bearings