Roller of seamless tube straightening machine

The utility model relates to a roller of a seamless tube straightening machine. The roller comprises a body and a roller shaft. The body is internally provided with a channel penetrating through the interior of the body, the roller shaft is arranged in the channel, and a left bearing and a right bearing are arranged at the joint of the roller shaft and the left side of the channel and the joint of the roller shaft and the right side of the channel, a left circular groove and a right circular groove are formed in the left surface and the right surface of the body, and the left bearing and the right bearing are clamped and connected in the left circular groove and the right circular groove through external transmission devices respectively. According to the roller of the seamless tube straightening machine, the diameter part, the length part, the roller surface curve and roller bearing boxes of the roller are located on the same roller body, and the roller bearing boxes are located at the two ends of the roller and play the role in supporting the roller for normal operation.