Improved filtering pulley

A filtering pulley comprising:

• a hub adapted to be fixed to a shaft rotating around an axis (A),
• a crown mounted coaxially and rotationally free on said hub, and
• a filtering unit operatively interposed between said hub and said crown,
• wherein said hub comprising a first portion and a second portion, said first portion being radially comprised around said axis (A) by said crown, and said second portion being only partially radially comprised around said axis (A) by said crown,
• wherein said filtering unit is operatively interposed between said hub and said crown around said second portion of the hub and axially facing said crown, said filtering unit comprises:
• a housing connected, integrally with the rotation, to one of said hub and said crown, and
• an actuator connected, integrally with the rotation, to the other one of said hub and said crown,
• wherein said housing defining a space to house elastic means operatively interposed between said actuator and said crown,
• wherein said housing comprises a first and a second element connected to each other to define said space and to said one of said hub and said crown, said first and said second element bearing respective stop elements extending into said space and dividing said space into several portions, where each portion houses said elastic means, said elastic means being operatively interposed in contact between said actuator and said stop elements, and
• wherein one of said first and second elements is connected to one of said hub and said crown by means of a mechanical connection, said mechanical connection comprising a threaded, riveted or shaped connection.