nter flanges for flanged shaft Types HF HF HF B4-VV17A Bevel-helical gear reducers B4

Flender/Flender Gear Units/Bevel-helical gear reducers B4

te seal Overview Radial shaft seal Radial shaft seals are suitable for low to average operating speeds. They can be used for all types and sizes. In normal scenario, only one radial shaft seal is installed at each sealing point. At the hollow shaft sealing point on the driven machine side and on the bottom low speed shaft for vertical mounting position, second, back-up radial shaft seal is installed as standard measure. Upon request by the customer, 2nd radial shaft seal can be installed at other sealing points. Other features are: Wearing seal, however, easy to maintain Local heat development on sealing lip; therefore, adequate lubrication (cooling) required Commercially available product with the highest qualification requirements for suppliers Radial shaft seal material FKM - fluororubber (commercial name VITON), NBR for very low ambient temperatures Design with low oil level on request Optionally, hardened bushing can be installed under the radial shaft seal. This can alternatively be switched to the entire shaft if run-in grooves have formed due to the radial shaft seal. Optionally, dry-running protection can be provided for verti- cally mounted gear units if shaft extensions are located at the top. For gear units that are vertically mounted in explosive atmospheres, either Taconite seal or dry-running protection must be installed on shaft journals that are located on the top.Taconite seal With the Taconite seal, the desired level of operational safety in dirty or dusty environments can be achieved. labyrinth system filled with special grease protects the radial shaft seal against harmful environmental influences such as dust and solar irradia- tion. The attaching of motor lanterns can be considered as quasi dust-proof. -gear units can nevertheless be designed with an optional, additional Taconite seal on the high speed shaft. No Taconite seal is offered for gear units with motor lanterns due to the quasi dust-proof design