Motorized recessed spotlight comprising: - a light unit inside which an electrical power supply devices and a light beam emission source are arranged; - at least a vertical axis (Z-Z); - a base; - a mechanical support unit comprising: -- a ferrule comprising a cylindrical part provided with a female thread for engagement with the light unit; at least two first tongues extending parallel to the vertical direction (Z-Z) and provided with a respective through-hole in a longitudinal direction (X-X); at least one third tongue extending parallel to the vertical direction (Z-Z) and provided with a respective through-hole in the longitudinal direction (X-X), said third tongue being arranged at an angular distance in a plane (X-Y) perpendicular to the vertical axis (Z-Z) from either one of the two first tongues; -- a ring lying in the plane (X-Y) and provided with a radial recess open in the vertical direction (Z-Z); -- at least one first wall and one second wall lying parallel to each other in a respective plane (Y-Z) parallel to the vertical axis (Z-Z), arranged facing each other in the longitudinal direction (X-X) and being fixed to the ring; each wall (233,234) having a respective first eyelet with a curved profile of predefined length open in the longitudinal direction (X-X); the second wall having a second eyelet with a curved profile of predefined length open in the longitudinal direction (X-X) as well as a through-hole in turn formed in the longitudinal direction (X-X); - at least one motor for tilting the light unit, fastened to the second wall of the support unit and provided with a shaft; - a cylindrical pinion with longitudinal axis (X-X) and radial teeth, coaxial with the shaft of the motor for tilting the light unit and keyed thereon; - a rack with curved profile and of suitable length provided with teeth; the rack having a through-hole with a longitudinal axis (X-X) for receiving a pin designed to pass through the second eyelet for fixing the rack to the second wall; wherein the pin is arranged to slide freely inside the second eyelet between the two opposite ends thereof; said motor, pinion, rack and support unit being thereby arranged to cause a tilting movement of the light unit about the longitudinal axis (X-X) so as to maintain a constant breadth of the light beam emitted in any angular position of the spotlight. - a light unit inside which an electrical power supply devices and a light beam emission source are arranged; - at least a vertical axis (Z-Z); - a base; - a mechanical support unit comprising: -- a ferrule comprising a cylindrical part provided with a female thread for engagement with the light unit; at least two first tongues extending parallel to the vertical direction (Z-Z) and provided with a respective through-hole in a longitudinal direction (X-X); at least one third tongue extending parallel to the vertical direction (Z-Z) and provided with a respective through-hole in the longitudinal direction (X-X), said third tongue being arranged at an angular distance in a plane (X-Y) perpendicular to the vertical axis (Z-Z) from either one of the two first tongues; -- a ring lying in the plane (X-Y) and provided with a radial recess open in the vertical direction (Z-Z); -- at least one first wall and one second wall lying parallel to each other in a respective plane (Y-Z) parallel to the vertical axis (Z-Z), arranged facing each other in the longitudinal direction (X-X) and being fixed to the ring; each wall (233,234) having a respective first eyelet with a curved profile of predefined length open in the longitudinal direction (X-X); the second wall having a second eyelet with a curved profile of predefined length open in the longitudinal direction (X-X) as well as a through-hole in turn formed in the longitudinal direction (X-X); -- a ferrule comprising a cylindrical part provided with a female thread for engagement with the light unit; at least two first tongues extending parallel to the vertical direction (Z-Z) and provided with a respective through-hole in a longitudinal direction (X-X); at least one third tongue extending parallel to the vertical direction (Z-Z) and provided with a respective through-hole in the longitudinal direction (X-X), said third tongue being arranged at an angular distance in a plane (X-Y) perpendicular to the vertical axis (Z-Z) from either one of the two first tongues; -- a ring lying in the plane (X-Y) and provided with a radial recess open in the vertical direction (Z-Z); -- at least one first wall and one second wall lying parallel to each other in a respective plane (Y-Z) parallel to the vertical axis (Z-Z), arranged facing each other in the longitudinal direction (X-X) and being fixed to the ring; each wall (233,234) having a respective first eyelet with a curved profile of predefined length open in the longitudinal direction (X-X); the second wall having a second eyelet with a curved profile of predefined length open in the longitudinal direction (X-X) as well as a through-hole in turn formed in the longitudinal direction (X-X); - at least one motor for tilting the light unit, fastened to the second wall of the support unit and provided with a shaft; - a cylindrical pinion with longitudinal axis (X-X) and radial teeth, coaxial with the shaft of the motor for tilting the light unit and keyed thereon; - a rack with curved profile and of suitable length provided with teeth; the rack having a through-hole with a longitudinal axis (X-X) for receiving a pin designed to pass through the second eyelet for fixing the rack to the second wall; wherein the pin is arranged to slide freely inside the second eyelet between the two opposite ends thereof;