They would want to tighten the screw slewing

  Many people think that mechanic and mechanical installation must take slewing and mechanical slewing linked with screws

And screws, so we will put very tight spiral Nin prevent slewing off. Xuzhou Orson manufacture slewing

Company Description: When installing Slewing bearing sure not to tighten the screws as tight Ning will work with slewing

Abnormal sound, but also affect the Smart slewing sex. So be sure not to install a tight spiral Nin.