Bearing convenient to fix and bearing seat thereof

The utility model relates to the field of bearings, and discloses a bearing convenient to fix and a bearing seat thereof, the bearing comprises a shaft center, a shaft sleeve and a ball, the shaft sleeve is sleeved outside the shaft center, an annular groove used for placing the ball is arranged between the shaft center and the shaft sleeve, a groove which is concave inwards and used for fixing is arranged outside the shaft sleeve, and the shaft sleeve is sleeved outside the groove. When the bearing fixing device is used, a user can pull the fixing pieces outwards at the same time through the grabbing openings in the two fixing pieces, the bearing is installed in the bearing seat, then the fixing pieces are loosened, the fixing pieces are restored through the elasticity of the springs and embedded into the shaft sleeve, the bearing is fixed, the bearing can be effectively and conveniently fixed and limited, and the bearing fixing device is convenient to use. And the bearing is prevented from being separated f