| CPC B65G 13/06 (2013.01) | 19 Claims |

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1. A roller comprising:
a roller body that extends between a first roller end and a second roller end, wherein said roller body defines a motor cartridge seat therein,
a motor cartridge for the roller, comprising
a cartridge body, wherein said cartridge body is elongated and extends along an axial direction between a first cartridge body end and a second cartridge body end,
a motor unit, wherein said motor unit is supported at said first cartridge body end,
wherein said motor cartridge is connected to said roller body at said first roller end exclusively through said first cartridge body end leaving said cartridge body projecting in a cantilever manner into said motor cartridge seat, wherein said motor cartridge transmits a rotation torque to said roller by shape coupling exclusively through said first cartridge body end.
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