Oil-liquid integrated rotary joint

The utility model discloses an oil-liquid integrated rotary joint, which comprises a broach oil cylinder pushing structure, a ceramic sealing structure, a bearing combination structure and a rotary sealing structure which are combined into an integrated rotary joint main body (1), the integrated rotary joint main body (1) is positioned at the tail part of a spindle core of a numerical control machining center; an axial water channel (2) and an axial oil channel (4) which are through are formed in a shaft core (6) of the integrated rotary joint main body (1); a radial water inlet (3) and a radial oil inlet (5) which are used for feeding cooling liquid are further formed in the upper part of the integrated rotary joint main body (1); the axial water channel (2) is communicated with the radial water inlet (3); and the axial oil channel (4) is communicated with the radial oil inlet (5). The joint has the advantages that the limitation of fatigue wear of a rotary joint and a tool beating oil cylinder part can be e