I spread 46 granulated (prills) and seed with mine, I'd never consider spreading gravel with one. Sounds like almost instant death to me.
I have the Agri Supply model PDV 500, 500 pound capacity, Item number 76161, $2119.99. I also have their spin spreader, 672 pound capacity, P250, $499.99.
Never had any issue with either but I don't spread gravel either...lol I keep them greased and clean them out (pressure wash them inside) after I use them. 46 will destroy any spreader in short order if left inside the hopper.
Just be sure your 3 point can carry the weight of the spreader and the contents.
Neither is as you term it 'Chinese Junk'. Neither are made in China.