Automatic wrapping machine for pallets with stretch polyethylene with rotating arm RA version complete of clamping and cutting system of the polyethylene. The machine is fitted with netting to protect its perimeter, an access door and emergency limit switch. The rotation of the arm is inverter-controlled. The upward and downward speed of the reel bearer also occurs through the inverter. With this concept the RA wrapping machine by MESSERSI PACKAGING reaches total flexibility.