High-efficiency motor

The invention discloses a high-efficiency motor, which comprises a motor base body, cooling ribs, a front end cover, a rear end cover, a motor shaft, a motor fan, a front bearing inner cover, a rear bearing inner cover, a front bearing end cover and a rear bearing end cover, wherein inner cover circumferential flame-proof joint surfaces are arranged between the front bearing inner cover and the motor shaft and between the rear bearing inner cover and the motor shaft; a plurality of wind guide covers are arranged on the peripheries of the cooling ribs; one wind guide covers and two cooling ribs form one wind guide cavity; sealing devices are arranged on the outer sides of the front bearing end cover and the rear bearing end cover separately; each sealing device comprises a moving ring fixedly connected to the motor shaft, and an internal static ring and an external static ring sleeving two ends of the moving ring; a center plate is arranged on each moving ring; dynamic sealing rings are arranged at two sides o