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• Q: Friction rings cannot be used efficiently in cardboard core types, especially in used cardboard cores.

• A: In our standard 3" friction rings, 7 mm steel balls are used. When the friction rings are charged, the outer diameter is 80 mm. For this reason, it provides a much better grip on the inner diameter of the core and can easily be grasped even on worn cores.

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• Q: We can't get enough differential movement from the friction rings

• A: The inner diameter surfaces of our friction rings are Ra 0.4, therefore, when it starts to move on the shaft, optimum differential motion occurs between the inner surface of the friction rings and the outer surface of the shaft.

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• Q: Friction rings get very hot during operation

• A: Our friction rings provide optimum differential motion without overheating under the following operating conditions
  
  1- Pulling force: It should be 30-40 NM.
  2- The air pressure applied in the shaft should start with 3 bars and end with 6 bars.
  3- The felt strips on the shafts should be lubricated at certain intervals with the lubricating spray we recommend.
  4- The operator end of the shaft and the driving part must be in the same center, there should be no planarity problem in the shaft.
  5- The outer diameter of the shaft and the inner diameter of the ring, diameter tolerances must be appropriate.

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• Q: The slots of the balls in the friction rings distort over time and compress the balls.

• A: The operator should not put the core on the shaft or remove the core without bringing the friction rings to the fully unlocked position.

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• Q: Leaf springs in friction rings lose their properties over time.

• A: When the friction rings are subjected to excessive load beyond their capacity, the springs lose their properties over time, as the operating capacity of the springs is exceeded, so excessive load should not be wound out of the capacity.

• Q: What materials can we wrap using friction rings?

• A: Films 12 - 180 micron CPP, OPP, BOPP, BOPA, LLDPE, LDPE, HDPE, PET, PETP, PVC
   Laminations Various materials up to 180 microns
   Papers & Cardboards Materials between 20 - 250 gr/m²
   Aluminum foil up to 180 microns

• Q: What type of friction should I use?

• A: You can use PET friction rings for winding that requires low tension, and steel friction rings for winding that requires high tension.

• Q: How can you wind with automatic unlocking friction rings?

• A: Since the friction rings automatically remain in the closed position on the shaft, before starting the winding operation, the cores on the friction rings must be manually rotated and the friction rings must be brought to the locked position.
  Hold and rotate the core till the friction rings are locked position and tape the winding material while the core is in locked position with friction rings. Do the same operation to all winding cores.

• Q: What should be the suitable cardboard core?

• A: Your cardboard core must be made of thick and tight material. If you use a thin and softcore, it will create extra slippage because the friction rings cannot hold onto the core at the desired level.

• Q: winding with more tension than necessary.

• A: If you wind with more tension than necessary, the friction rings will hold too much in the core, and after a while, it will cause wear on your core, as a result, more than desired slippage will occur in the core during winding operation.

• Q: How do we need to align the friction rings on the shaft?

• A: The alignment of the friction rings in the shaft is opposite to the winding direction.