Here are the ball screws. I had the machine the ends down to size. The fixed bearing end was machined to fit NSK Angular Contanct bearing blocks that I snatched from ebay.
The mounting flange is fixed to the ball nut with two screws. I would have used setscrews but my box of 100 mysteriously dissappeared. There are six or so curved spring washers between the two ballnuts. The ballnuts are then tightened together to achieve the preload and then the clamp is used to prevent the nuts from spinning loose, thus maintainining the preload.
For those who are currious. The roton ballscrews are pretty good although not quite as good as I hoped. When too heavily preloaded they don't spin as freely as I would like. Im not quite sure how much they are being preloaded and am not sure what exactly to expect, not to mention I can be alittle obssesive about small details sometimes. I will evaluate their performance when I actually run the machine. |