Aiming at the problem of the gearbox bearing and gear shaft locking due Spring-Assisted 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 4 Piece Large Entertainment Wall without pre- lubricated startup is designed and developed.And the safety and reliability of the device are proved by experiment and field application.