A torque-limiting coupling includes a main body, a torque-limiting assembly, a limiting mechanism, and a bearing. The main body forms a receiving cavity where the torque-limiting assembly is received. The assembly includes an elastic element, a pressing element, and an adjusting element. The adjusting element is adapted for adjusting compression of the elastic element. The limiting mechanism is adapted for restricting the assembly in the receiving cavity. Thereby, the torque-limitation can be kept stable, and all components can be restricted in the main body. Also, the reaction force by the pressing element is absorbed by the bearing to reduce shock.