Reliability at high speeds
Electric Drive Unit applications work at increasingly high rotational speeds of >30 m/s and very high friction induced heat is created on top of the normal application temperatures. Due to excellent temperature resistance of Rulon® compounds, our High Speed Lip Seals works reliably up to >100 m/s at temperatures from -40°C to 260°C, which far exceed the application temperature of -40°C to +160°C of the Electric Drive Unit.
Excellent bi-directional sealing
An optimal contact of the lip seal and the shaft surface at high speeds is ensured by the flexibility of the material and a design element leading to reliable sealing in forward and reverse direction with zero leakage in both motions. A special feature inside the metal housing compensates for thermal expansion and dynamic forces, preventing possible leakage paths.
The material properties of Rulon® ensure a long lifetime performance with no aging or degradation. Chemical inertness allows the use in different formulations of oils, water and glycol, furthermore wear resistance leads to stable performance over lifetime of the Electric Drive Unit.
|High Speed Test||1000 hours @ 17K RPM||Zero Leakage|
|Reverse Test||100 minutes @ 5K RPM (after 500- hours high speed test)||Zero Leakage|
|Oil Soak Test||ATF and EV gearbox lubricant||No Swelling, Absorption or Reaction|
|Material||PTFE lip Sealing System Seal Housing||Over 70 formulations Aluminum or Steet, various Coatings|
|Operating Conditions||Temperature||-50 to +200 C|
|Pressure||0 to 0.1 MPa|
|Speed||Up to 100 m/s|
|Max. PV||1 MPa m/s|
|Available Sizes||Shaft Size||3.0mm to 200mm|
|Minimum Bore Depth||8.0 mm|
New requirements of Electric Drive Unit