By working in close collaboration with electric vehicle engineers, Trelleborg provides an array of innovations that optimize vehicle efficiency, while protecting passengers and the environment from high voltage. To accelerate development times and meet drivers’ demands for ever improving performance and range, Trelleborg combines computer aided engineering, virtual simulation, rapid prototyping and in-house testing.
E-axles combine an electric motor and gearbox in a single unit. They are subject to extreme rotational speeds of up to 16,000 RPM: three times faster than transmissions in gasoline engines. With little or no lubrication, seals are subject to high frictional forces and stick-slip that can potentially cause wear and shorten seal life, lowering a vehicle’s travelling range. Two rotary seals from Trelleborg have made a significant step in overcoming issues related to sealing in extreme conditions at high rotary speeds. This next generation technology helps enable electric cars to meet the goal of travelling the same distance as a gasoline vehicle on one charge.