... time.By the way,it is suitable for many Engineering Machinery,for example,Slewing Conveyer,Welding Operation Machine,Pint- ... of two seat-rings, compact structure,light weight,small assembly-clearance,high installation-precision,and the rollers are arranged across ... of two seat-rings, compact structure,light weight,small assembly-clearance,high installation-precision,and the rollers are arranged across ...