Power restoration: The new motor provides abundant torque, ensuring the roller brush rotates stably at high speed, restoring the original strong beating force. Increased suction: The powerful drive propels the roller brush to efficiently lift deep-seated dust, maximising the main suction power. Smooth operation: Precision bearings and dynamic balance optimisation significantly reduce abnormal vibrations and noise during operation. Model matching: specially designed for the model to ensure that the installation size, shaft diameter and gear parameters fit perfectly. Main brush motor module ，Compatible For Roomba， 800 900 series 860 870 880 980 vacuum cleaner