Assembly provided with a rotating supporting member and with an oil transfer unit for transferring oil to such rotating supporting member

An assembly comprising a supporting member rotatable about an axis and an oil transfer unit for transferring oil to said supporting member;

• the unit comprising:
• a stationary part comprising an oil mouth;
• a rotating part coupled in an angularly fixed position to said supporting member and having:
• a) an inner chamber permanently communicating with said oil mouth and
• b) an outer cylindrical surface extending along said axis;
• a floating part fitted onto said outer cylindrical surface and coupled to said stationary part in an angularly fixed position about said axis and with a defined freedom of movement;
• further comprising a connection member coaxial to said rotating part and said supporting element and comprising:
• at least one first portion fixed to said rotating part;
• at least one second portion fixed to said supporting element;
• at least one intermediate portion, which is arranged between said first and second portions and is elastically flexible.