Double bearing labyrinth seal (DS)
DS Double seal
The DS (double seal) is a combination of a CS(centrifugal seal) together with a CC PTFE seal and has been developed for bearings used in abrasive environments. The DS seal combines the advantages of two seals in a single seal set. CS seal means that the underlying CC seal has extra protection against abrasive particles.
Stainless steel bearing cover-spacer ring is used to make space for the labyrinth bearing housing seal.
While using the DS seal, the installation length increases
When the DS seal is required in a bearing unit with a continuous shaf (cover side), the built-in length is greater. Because space has to be made in the bearinghousing by using an SR spacer ring.
| Size | V |
| 20 | 8.5 |
| 25 | 8.5 |
| 30 | 8.5 |
| 35 | 8.5 |
| 40 | 8.5 |
| 45 | 11 |
| 50 | 11 |
| 55 | 11 |
| 60 | 11 |
| 65 | 13 |
| 70 | 13 |
| 75 | 13 |
| 80 | 18 |
| 85 | 18 |
| 90 | 20 |
| 100 | 20 |
Examples of grease diagrams using DS bearing labyrinth seals
