Bearing dismounting device

The invention discloses a bearing dismounting device. The device is used for separating a machine shell from a bearing seat. The bearing dismounting comprises a device body; the device body is provided with a transmission mechanism, an operation piece connected with the torque input piece of the transmission mechanism, lifting pins connected with the corresponding torque output pieces of the transmission mechanism and fixing pieces used for fixing the device body to a bearing end cover; one torque input part is adopted; two torque output parts are adopted; the torque input part and the torqueoutput parts are both rotationally installed on the device body; each lifting pin is provided with a connecting end and a threaded end opposite to the connecting end; a containing hole is formed in the center of each torque output piece; the connecting ends of the lifting pins are in sliding anti-torque connection with the containing holes of the torque output pieces; and the threaded ends of thelifting pins are in thread