... Free load speed, 6.5mm-15mm/sRated load speed, 4.5mm-12mm/sOperating principleThe operating principle of linear actuator is that after ... changing the lever arm length, can increase the stroke of linear actuator. Installation note(1) Check whether the electrical wiring ... specific requirements when place an order.(2) If users need linear actuator accessories, such as control box, adapter and handset, ...