Our hydraulic rotary unions integrate precision engineering with robust materials to facilitate seamless fluid transmission in rotating systems. The union housing is crafted from corrosion-resistant stainless steel (316L) or bronze, ensuring durability in harsh environments. Internal components feature a ground and lapped mating surface finish (Ra ≤0.2μm) to minimize friction and maintain consistent sealing performance. The design incorporates double-row angular contact ball bearings capable of handling combined radial and axial loads, while a patented labyrinth sealing system prevents contamination ingress. With pressure ratings up to 40 MPa and rotational speeds reaching 3,600 RPM, these unions are widely used in excavator slewing drives, CNC machine tool spindles, and wind turbine pitch control systems. Each union undergoes helium leak testing (leak rate <1×10⁻⁹ Pa·m³/s) and dynamic balance testing (G2.5 grade) to ensure reliability. We offer modular designs with 1-12 fluid passages, customizable for hydraulic oil, coolant, or pneumatic media. Explore our standard product range at [https://www.uranustj.com/] or request a custom design for your specific rotational fluid transfer needs.
21
Jun
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