The Deublin 1205/250 Series Rotary Union (price) is a premium solution designed for transferring air, hydraulic fluid, or other low-viscosity media between stationary and rotating components. Engineered with balanced mechanical seals (carbon-graphite vs. hardened tool steel or silicon carbide) and a low-torque design. It operates at pressures up to 51.7 bar (750 psi) and speeds optimized for CNC spindles, packaging lines, and automation systems. Its aluminum housing and lubricated ball bearings ensure minimal maintenance and extended service life (>20,000 hours), even in 121°C thermal environments.
The 1205/250 Series supports air up to 10 bar (150 PSI), hydraulic oil pressures up to 69 bar (1000 PSI), and vacuum conditions down to -0.95 bar (-13.75 PSI). It ensures adaptability across various industrial fluids and gases.
These rotary unions operate at speeds up to 3500 RPM, balancing high-speed rotation with dependable sealing performance. Maximum pressure ratings vary by model. Some units are rated for hydraulic oil pressures up to 1000 PSI, suitable for demanding hydraulic applications.
Featuring anodized aluminum housings and stainless steel or carbon steel rotors, the 1205/250 Series ensures corrosion resistance and long service life. The balanced mechanical seals, often made from carbon graphite and silicon carbide, provide low friction and wear resistance for extended operational reliability.
The series offers a variety of supply and rotor connections, including NPT, UNF, BSP, and metric threads (e.g., 1/2″-14 NPT, M20x1.5, G 3/8″-19), allowing seamless integration into existing systems with different piping standards.
Balanced mechanical seals minimize torque and ensure smooth rotation, while ball bearings lubricated for life support the rotor, enhancing stability and reducing maintenance needs. Some models include felt oilers for air service lubrication, extending seal life.
Ensures continuous coolant flow to rotating tools, preventing thermal deformation during milling (e.g., Haas, Mazak spindles).
Transfers air signals to rotary actuators without hose tangling, critical for bottling lines.
Vacuum-compatible design for wafer transfer robots, where particle contamination is unacceptable.
Reduces the impact of pressure changes on the sealing surface and extends service life.
Balanced seal design ensures a consistent sealing effect under high pressure.
Equipped with deep groove ball bearings, providing stable rotation and reducing friction.
Bearings are lubricated for life, reducing maintenance requirements.
Use corrosion-resistant materials to handle a variety of media, including hydraulic oil, active coolant, etc.
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Deublin Rotary Union Replacement Manufacturer | Custom Solutions Available
