How big is the electric push rod of medical bed suitable for use?

24V/ 12V DC permanent magnet. The electric push rod of medical bed is driven by 24V/ 12V DC permanent magnet motor, and the driving rod is made of aluminum alloy or stainless steel. This electric push rod is mainly used in electric nursing beds, operating beds, traction bed, dental chairs, massage beds, treadmill fitness equipment and medical equipment industries, with overload protection function and built-in spare batteries.