One particularly tricky challenge was perfectly overcome thanks to application-specific constructions.

Project:
Seal for a follower piston for a central lubrication system
Sector:
Wind power technology.
Application:
Follower piston for the PMMA media tank of a central lubrication system with the media oil and grease.
Requirements:
The grease gun tank is made of plastic with a very smooth surface. At +– 2.5 mm at a diameter of 290 mm, the tolerance is very high. The tank is also exposed to rotation during application.
Test/test setup:
FEA calculation for the design of the necessary sealing lip geometry for the min./max. tolerances. Test series with different geometries, taking into account the two different media and rotation loads.
Result:
- The ttv piston seal developed in accordance with the customer's specific requirements completely passes all of the customer tests.
- There are no performance restrictions even when using the "worst case" medium of a low-viscosity spindle oil.
- The seal is a cost-efficient component thanks to its injection-moulded design.