Working Principle of Main Brush Motor:receives current signals from the control circuit and converts electrical into mechanical .The rotation of the motor drives the brushes,wheels and other parts of the sweeping robot to realize the function of sweeping the floor and moving Compatible With Models:This main brush motor compatible with for OZMO DVX9G DVX32 DVX33 DVX34 DVX65 DVX93 DVX55 DVX96 T5 T8 N8 Main Brush Motor Replacement Parts,Not compatible with for 900 930,please confirm the model number before purchase. Excellent Quality:Our main brush motor is made of high-quality materials and undergoes quality testing before leaving the factory to product quality. Simple Installation:Easy installation,saving you valuable time.When the robot vacuum cleaner has abnormal noise during work,the motor rotates weakly or ,it is time to replace the old part motor.