I ordered a couple chinese double ballnuts, and what I got was not what was pictured in the ad. Normally im used to seeing the double ball nuts that have the lock washer type spring in between with the locating tab keeping the second nut from spinning. Like this....
![]()
Instead, I was shipped a double ballnut that has nothing between the nuts (that I can tell). Its weird though, because the second nut is kept from spinning (it turns ever so slightly) but i'm not sure whats preventing it from spinning. Before I return them, has anyone seen this type? Is it even truly a backlash reducing double ballnut or is it just simply two nuts fastened together somehow? Is there a way to set the preload? Is it preloaded from factory? Any ideas??
![]()
Instead, I was shipped a double ballnut that has nothing between the nuts (that I can tell). Its weird though, because the second nut is kept from spinning (it turns ever so slightly) but i'm not sure whats preventing it from spinning. Before I return them, has anyone seen this type? Is it even truly a backlash reducing double ballnut or is it just simply two nuts fastened together somehow? Is there a way to set the preload? Is it preloaded from factory? Any ideas??
