OBURSSI high-performance rotary unions for CNC machine tool spindles. Mechanical seal design with precision bearings, supporting coolant (up to 500 bar), compressed air dry-run, and minimum quantity lubrication (MQL). Series include standard (R01), deep hole high-pressure (R02), ball screw (R03), swivel head spindle (R04), hollow motor (R04), high-speed motorized spindle (R07/R08), and ultra high-pressure (R09). Also available: central through-spindle nozzle covers and shuttle valve kits. Manufactured by OBURSSI Technology (Shanghai).
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