Pneumechanical chucks with leverage
Expandable chuck with leverage: model svecom 714 mzl specifications
An innovative chuck
Svecom P.E. has designed and has patented a conceptually innovative expandable chuck in order to unwind paper and tissue reels using cardboard cores with internal diametres that go from 200 to 600 mm. It can be built with female conic coupling or with a rotating journal. A setof internal preloaded springs, combined with leverages that operate on the expandable sectors generate a constant radial force that allows it do atapt to the potential yieldings or bucklings of the core, canceling the clearance that is created (this is not possible with the traditional mechanical pneumatic expandable chucks used until nowadays).
Optimal self-centering guarantee
Thanks to its 20mm of expansion on the diametre, it can be easily inserted in the core. Since the expansion of the elements is generated by the preloaded push springs, the functioning turns out to be intrinsically sure, since it is not possible for the reel to accidentally unhook.
In order to guarantee a continuous and optimal functioning during time, cleaning and ordinary maintenance operations have been conveniently simplified.