The Importance of Internal Collar Plug Welding for Screws

A conveyor screw, with plug-welded internal collars, is designed to handle torque as an integral assembly. If the welds between the center pipe and internal collar fail, the screw will fail causing an interruption to production.
KWS exceeds industry standards by providing four plug welds per bushing, with two plug welds located on each side of the center pipe at 180-degrees apart. Plug welds provided on KWS screws are permanent, will not break loose, and are guaranteed for the life of the screw.