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POLITUBES
Italy
Politubes, in conjunction with DuPont, has developed a special spiral-wound tube made of heat-shrinkable polyester (Mylar HS), which enables automated fixing of permanent magnets, thereby reducing the cost of assembling these motors.Important advantages are: 1.Unlike very expensive steel rings, the spiral-wound tube also wraps around and protects the ends of the magnets, which are also subject to corrosion. 2.The trimming that often has to be done during the assembly process when using rigid rings is avoided; the Politubes spiral-wound tube adheres perfectly to the magnets, taking their shape and protecting them from cracking and scratching; this also guarantees perfect balancing of the rotor. 3.Part of the assembly process is removed, since potentially costly and often manual bandage with tape impregnated with epoxy resins can be eliminated; this avoids as well lenghty resin activation time in oven; productivity is thereby increased and hidden production costs reduced.
Request for a quotePOLITUBES
Italy
Politubes offers a unique spiral wound continuous polyester heat shrink sleeve. This sleeve is supplied in rolls of several hundred meters. Its aim is: •Reduce noise by various decibel in universal motors •Protect rotor magnets against dust extending its life •Compact rotor surface where there are grooves fixing rotor balancing This hi-tech tube is produced with a spiral wound technology without any overlapping of layers; it offers: •a perfect roundness of the tubes that is the only way to guarantee the rotor balancing ; on the other hand overlaps of layers will cause the rotor unbalancing where is the overlap of layers that of course may cause many problems to the motors •to avoid breaks and ruptures in the overlapping areas after the heat shrink process It is supplied with very low thicknesses thickness ranging between 50 and 75 micron, wound on rolls of several hundred metres long to reduce transport costs.
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