The CAME quick coupler allows the connection of several equipments (that must be equipped of one special dedicated adapter) to the arm of the excavator in a quick and precise way. Its design is conceived in order to optimize the productivity of whichever operating machine minimizing the loss of force due to the lengthening and guaranteeing best digging geometry especially in combination to the CAME equipments. The hydraulic system is simple and the locking/ unlocking particular system guarantees the possibility of working always with the maximum safe condition without coming down from the operating machine. The hydraulic locking valve is not necessary.