When I went looking for AC Servo motors I looked at EBAY. Yuck. No idea who I was dealing with. Looked at Aliexpress. Same issue with the fear of large dollar items going south. One time I got a pair of fake designer sunglasses that were actually supposed to be shoes ordered from Italy. That took over a month to get Mastercard to refund.
But for the AC servo's I went Alibaba, the parent company of Aliexpress, and ended up dealing directly with the factory that makes the servos. At one point when I was having problems they even sent me a cell phone video of their engineer pressing the buttons and setting the values I needed to set.
If we ever make it over to China for a holiday we've been invited to tour the factory. Even know which little village the guy lives in and commutes from to go to work.
But for the AC servo's I went Alibaba, the parent company of Aliexpress, and ended up dealing directly with the factory that makes the servos. At one point when I was having problems they even sent me a cell phone video of their engineer pressing the buttons and setting the values I needed to set.
If we ever make it over to China for a holiday we've been invited to tour the factory. Even know which little village the guy lives in and commutes from to go to work.