According to Wuxi Jiake, German KACO has successfully developed high-speed dynamic oil seals for new energy vehicles and put them into production. This product not only meets the requirements of bidirectional high-speed rotation, but also features less wear and a longer service life. As a provider of automotive sealing system solutions, German KACO's main products are applied in internal combustion engines, accessories, as well as clutches and gearboxes. However, with the rise of the new energy vehicle industry, the three main performance standards of its dynamic sealing system will change: higher linear speed, low-viscosity oil with a high percentage of additives, and meeting the bidirectional rotation requirements at the input shaft end of the transmission.
Compared with the application of traditional internal combustion engines in the automotive market, the oil seal of the newly developed electric drive system by KACO Company can already meet the rotational speed of 15,000 to 20,000 revolutions per minute, and there is still room for further improvement. After conducting simulation tests on the high-speed oil seal under actual working conditions, the test results of its main rotation direction have far exceeded the customer's expectations. After internal testing, the technical requirements for bidirectional rotation in China's QC/T 1022-2015 and other known customer standards have been fully met as shown in the test results. The main parameters of the product, such as oil level height (maximum/minimum), high and low speed, pause period, durability, etc., have no significant differences in sealing performance for different rotation directions and meet the relevant requirements.
Mr. Ge Anding, Vice President of R&D at KACO, said, "It is very encouraging that we have made such significant progress in high-speed transmission oil seals for electric vehicles over the past few years. This is based on our long-term and stable bench tests, such as those conducted in accordance with the Chinese QC/T 1022-2015 standard." Today, we are already capable of meeting the demands of customers for single/bidirectional high-speed sealing systems used in reducers. Our latest patented sealing technology ensures that customers can purposefully design electric drive force systems with higher speeds and variable input shaft rotation directions.