Anti Drift System

Key Plant's Anti Drift System, can be supplied on different types of welding rotators including Conventional and Self Aligning (SAR) type,Turning Rolls. The system has been developed from experience gained in the field, from the early manual function to motorised through to the latest, fully automatic Key Plant's system.


Key Plant's Automatic Twin Anti Drift System :

  • Corrects Workpiece Drift
  • Maintains the Centre Height Position to +/- 1mm of lateral movement
  • Prevents Workpiece Spiralling
  • Compensates for Vessel Irregularities


The system controls both idler wheel carriages, operated by a master and slave function tracking and re-adjusting the wheel carriages through a sensor at the edge of the work piece to stop the pipe from spiralling during long periods of continuous turning of the work piece.
The variation of drift, can depend on a number of factors including the Diameter, Weight, Length, Wall Thickness, Weight Distribution & Outer-balance and Shape of the workpiece. (Drift also caused by an uneven floor or incorrect alignment of the rotators during installing or set up)

Key Plant's technology includes :

  • PLC controlled Programme's
  • Visual illuminated Control Panel with 1mm / 2mm / 3mm indicators in both Forward & Reverse Directions
  • PLC controlled Programme's
  • Visual illuminated Control Panel with 1mm / 2mm / 3mm indicators in both Forward & Reverse Directions
  • Alarm Sensor and Automatic Shut Down for Safety should the system reach the Pre-set limit
  • Sensor can be positioned at either end of the workpiece
  • Rotators can be operated in "Standard" mode by disabling the Anti Drift Function.

  • Anti Drift Rotators are ideal for continuous rotation applications including narrow gap and deep groove welding to enable the welding torch to stay in the centre of groove without drifting and damaging the side wall.

    Anti Drift are also beneficial for Pre-Heated Applications when workpieces need to be rotated continuously for 36 - 48 hours prior to welding, the Anti Drift removes the necessity for an operator to continually monitor the workpiece.

    Through experience in this field, our results, to our knowledge, are the most accurate achieved to date.

    Key Plant find themselves in a strong position by maximising their attributes and producing superior equipment that gives outstanding performance. The quality and reliability of the equipment is crucial to their customers and Key Plant's portfolio demonstrates their success.