Freudenberg’s S4 Cassette Seal Increases Reliability of Agricultural Equipment

Freudenberg cassette seals are robust pinion and wheel hub seals with a dirt-repelling multi-labyrinth in a single housing. This provides the maximum sealing effect with minimal friction. In addition, a finished seal running surface is integrated into the cassette seal. In this way, the shaft does not need to be hardened and ground separately. Additional dirt seals are not required either.

With the new S4 cassette seal, Freudenberg has further improved an already successful product, Mulac said. “With more improvements in the product’s design, we were able to increase its lifespan fourfold, as data from real-life use prove. Even when operated in rice fields, where the equipment’s axles run under water, our S4 reliably kept mud away from the axle.”

The new cassette seal has another advantage: Large tractors and harvesters are often equipped with crawler drives. Due to their greater contact area, they compress the soil less. Until now they had to be fitted with complicated mechanical slide ring seals, Mulac said. “But the latest generation of our high-performance cassette seals is also superbly suited for most uses on crawler track systems."

New designs of cassette seals can also improve the sealing of axles without reducing driving speeds on roads. The cassette seal HS-EVO is one example. In this case, the overheating of the seal’s elastomer is prevented, enabling it to offer a high degree of protection even at high rotational speeds and naturally with outstanding resistance to contamination.

More information on Freudenberg Sealing Technologies products for agriculture can be found here.