I don't believe you will get a plated max towing capacity on a tractor as it doesn't make sense.
You will get a max front and rear axle weight,a max gross weight, and then the rest comes down to the implement/trailer.
And this is down to drawbar weight which the max at any gross weight is 3 tonnes drawbar weight for a hook. And it's 4 tonnes max for the ball and spoon.
