This product is according to the cause of the workpiece shaft direction creep. When workpiece rotating, it do spinal running then cause shaft direction creep-through elevating of idle rotator, change the screw angle between workpiece shaft line and rotator shaft line, to make the shaft displacement direction of workpiece change.

This product is designed separately at the basis of abroad advanced experience and according to industry standard. It is escipecially suitable for heavy workpiece and surfacing weld and clearance weld which have high requtiement on presision of welding seam position and stability of welding speed.