Does the weight of the dancer rollers play a major role in maintaining the film tension?

Shery George | 2 September 2021

What are  dancing rollers-  Rollers  which  are  used to feed the labels or films to  machines & maintain specified  tension to the  film is  known dancing rollers  as they move freely up &  down along with the film.


What  are the  major  worry –   How to eliminate  unnecessary  weights  and reduce the  drive  forces and hence the energy consumption.

What  happens if weight is  not  optimum- The dancing rollers  should maintain the basic tension , as the film must  be  deflected multiple  times ,this  requires  fast pull-off movements, the  dancing rollers often hangs on the film and its  weight maintains  film tension. Without slight pretension , the film will not unroll properly and its position may get  shifted.  On the other hand if  the roller is too heavy , too  much load will be applied to the film and  hence causing its  damage. The additional load need to me moved , hence more  drive  power required and more energy usage.

Advantages of  Ready-to-install film guide rollers  from Igus .

  1. As they   are  lubrication free , the torque  required is  much lower then metallic  lubricated bearings  solution.
  2. Flexibility to  choose  from different  roller  materials like  aluminium tube , SS  tube , blue  food  grade PVC tube etc.
  3.  Special sand blasted rollers  are  also  available to get  better  grip and  avoid  film from slipping.
  4. Special bearings with a projecting flange that prevents the film from jumping over can also be used. 
  5. Lengths and diameters are also very flexible – we have a wide range of standard bearings to draw on. 
  6. Predictable life  of  rollers by expert  calculation,

What is the service life of a guide roller?

Ultimately, the question remains: “How long will the roller last?”

Our calculation tools can determine the answer for your application. External influences, such as contamination and cleaning media, are taken into account during selection of components and materials used.

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