The invention discloses a gimbal side bearing running-in machine which comprises swinging rotating shaft supports, a swinging support set and a swinging transmission device, wherein swinging rotating shafts are arranged on the swinging rotating shaft supports in a string mode, the swinging support set is arranged on the swinging rotating shaft supports through the swinging rotating shafts in an erected mode and swings with the swinging rotating shafts as a rotation center, at least one gimbal needing running-in is fixed to the swinging support set, and the swinging transmission device is connected with the swinging support set and a servo motor which drives the swinging support set to swing through the swinging transmission device. The gimbal side bearing running-in machine meets the requirement of gimbal side bearing running-in, has the advantages of being reasonable in design, simple in structure, convenient to operate and high in production efficiency, can carry out running-in on a gimbal side bearing effectively and solves the problem that running-in cannot be conducted on the gimbal side bearing after the bearing is assembled.