Talk about why the screw elevator sometimes shakes in use

The jitter of the screw lifter after increasing the load during use has been researched by professional and technical personnel and summarized the following five points:

  XNUMX. The pitch of the screw elevator is uneven;

  XNUMX. The worm head of the screw lifter is uneven;

  XNUMX. Inferior bearings (material and model unqualified) were purchased from the supplier, and the quality of plane pressure bearings and taper bearings did not meet the standard;

  XNUMX. The upper and lower protective sleeves of the ball screw are too tight;

  XNUMX. During the initial installation, the screw lift and the supporting motor are not concentric.