Electric circulating ball EPS (abbreviation RB-EPS) , It is a special type EPS. RB-EPS The rocker arm is connected to the steering knuckle of the entire vehicle, RB-EPS The torque output by the motor is transmitted through the worm gear, After three-stage reduction of ball screw pair and gear rack, Output torque to rocker arm shaft, The rocker shaft drives the rocker arm to rotate and output torque. RB-EPS The output torque range of the deceleration mechanism is generally 300Nm~2000Nm. Generally applied to micro trucks, On a light truck.