The invention relates to the technical field of
servo motor drivers, and discloses a hollow integrated
servo motor driver which comprises a shell body, a penetrating shell center hole is formed in the center of the shell body, and a small penetrating through groove and a large penetrating through groove are formed in the end, away from the circle center of the shell body, of the shell body. The shell further comprises a plug pin type
brake, the plug pin type
brake is connected into the shell body in a clamped mode, and the structure is simpler and easy to control through cooperation with the plug pin type
brake. According to the hollow integrated
servo motor driver, in order to stably operate in a high-temperature environment, have a large acceptable environment temperature margin and are not easy to cause faults due to heat generated by the driver, a small through groove, a large through groove, a
driver circuit board, a cooling fin, a driver center hole, an
encoder center hole and a temperature detection device are matched; therefore, stable operation can be achieved in a high-temperature environment, the acceptable environment temperature allowance is large, and faults caused by heat generated by the device are not likely to happen.