HARTAI TECHNOLOGY INDUSTRY CO.,LTD is professional manufacturer for coil winding tensioner, We supply coil winding tensioner for TANAC multi-spindle CNC Auto winding mahine,Nittoku and other brand coil winding machines with competitive price in china.there is description about Magnetic tensioner with cylinder as following:Coil winding Magnetic Tensioner with Cylinder by using permanent magnet, The tension is generated to the damp wheel, The non-contact mechanism design provides stable,consistence and precision tension to the wire,Excellence for both high and normal speed winding.