Praedifa Technology Division

Praedifa Technology Division - Drivetrain
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Drivetrain


 

Engine power / torque can only be put on the road via the wheels due to the interaction of these components. The transmission’s job is to adapt the engine’s torque as demanded by the driving condition according to the gear selected by the driver.
 

Depressing the clutch pedal (disengagement) releases the connection between the engine and the manual transmission allowing gears to be changed because the gears in the transmission are now freely movable. After engaging the desired gear the clutch pedal is released again (engagement). Spring elements reduce the vibrations that occur while engaging and disengaging the clutch.
 

The transmission contains a large number of precision shafts and gear wheels. Transmission oil reduces the friction between the gear wheels. This means that the housing must be sealed accordingly. Parker Prädifa has developed materials for use at the various sealing points.
 

For dynamic sealing points, they include A9164-75 (AEM), E3676-70 (EPDM), E9135-80 (EPDM), N9178-70 (HNBR) and N9192-75 (HNBR). As new pump generations operate with increasingly low pressures resulting in higher wear and higher friction the development of these materials was focused on optimization. This is also achieved, for example, by special designs of the sealing lips verified by FEA calculations.
 
Materials for dynamic sealing points in transmissions:

• Technical Data Sheet E3676-70 (EPDM)
Technical Data Sheet E9135-80 (EPDM)
Technical Data Sheet N9178-70 (HNBR)
Technical Data Sheet N9192-75 (HNBR)

  • Markets Img

    Clutch Systems

    In the automotive sector, the so-called releasable clutch is the most commonly used clutch system. Depressing the clutch pedal releases the connection between the engine and the manual transmission. Gears can be changed because the gear wheels in the transmission are now freely movable.
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CONTACT


Parker Hannifin GmbH
Engineered Materials Group
Arnold-Jäger-Str. 1
74321 Bietigheim-Bissingen
Tel. +49 7142 351-0
praedifa@parker.com