Deublin 1116048051 Coolant Union

The DEUBLIN 1116048051 Coolant Union is a single-passage rotary interface that transfers coolant from a stationary supply to rotating machine-tool spindles in through-spindle coolant systems, enabling continuous tool cooling during cutting. Commonly installed in CNC machining centers, vertical and horizontal mills, and drilling equipment, it delivers coolant directly to the cutting edge to improve chip evacuation, reduce built-up edge, and extend tool life under high-speed operation. Key specifications include a rotor connection of 5/8"-18 UNF left-hand thread and a 1/4" NPT housing connection, a rotor-mounted design, and a mechanical seal engineered for reliable performance in fast-flow coolant service. Media supported is coolant / through-spindle coolant (TSC), and the unit is manufactured in the USA by DEUBLIN, ensuring compatibility with CNC machining centers, milling machines, and drilling machines that rely on TSC systems. This coolant union is designed for repairs, retrofits, and replacement of worn coolant transfer components in industrial metalworking environments, providing a robust, direct path for coolant to rotating spindles.