Aluminum triple labyrinth seal

Efficient performance and long life of the roller bearing depend to a large extent upon the exclusion of foreign matter from the internal bearing surfaces.

Grease, or oil, serve the dual purpose of lubricating these surfaces and protecting them from corrosion. Thus the seal must prevent dust, grit and moisture from entering the bearing and at the same time, prevent grease or oil from escaping.

The aligning feature of the Cooper split roller bearing is integral with the cartridge housing. Any shaft misalignment that may exist tends to move the cartridge housing, seal and bearing together maintaining a parallel axis with the shaft.

Cartridges up to 300mm are usually supplied with a general purpose felt seal. The felt groove will also accommodate high temperature packing seals, lipped rubber seals or suitable blanking plates.

Triple labyrinth seals have precision non-rubbing characteristics. Extremely close tolerances can be maintained between the housing and the seal resulting in an effective sealing element which is one of the best of its type in the anti-friction bearing industry.

Triple labyrinth seals are readily available on request to suit the more difficult sealing environments.

For special applications seals may be made from other materials and alternative special seals can be supplied to suit specific conditions.

Picture right:

Illustrates an aluminum triple labyrinth seal on an 01E Series bearing and cartridge.

The twin 'O' rings are clearly visible. The compression of the 'O' rings causes the seal to rotate with the shaft, but the amount of compression is so designed that the shaft moves through the seal when axial expansion occurs.