Aiming at the problem of the gearbox bearing and gear shaft locking due to the startup sequence error in the high- speed gear units startup process. Through the technical analysis of the gearbox casing structure. the bearing structure and the lubricating oil stations. of a high- speed gear transmission device without pre- lubricated startup is designed and developed. https://www.poolsproductscanadas.shop/product-category/jandy-levolor-parts/