i-mold has developed a line of compact rotary cooling units that facilitate the cost-efficient integration of rotating cores into injection molds. The device's main components are a stator designed for twist-lock installation which also carries the coolant hose connectors, and the rotor which supports the cooling pipe as well as the thread for attaching the rotating core. Available as a standardized element, the unit reduces the development cost and effort otherwise associated with the use of custom solutions. Moreover, it eliminates problems in use caused by cooling water leaks, as each unit comes leakage-tested and warranted to be leakproof by i-mold.