Is this suitable for a caravan using a motor mover with a low static weight 500 kg.

I have had a look for you and it is not listed for a motor mover but if all these dimensions match up: Wheel Diameter: 200mm Tyre Width: 55mm Tyre / Rim: PU / Steel Bore (dia. X Length): 20.5 X 64mm Max. Static Load: 500kg It should be okay for your machine.