Rotary unions for air, hydraulic oil and vacuums

Rotary unions for standard applications; suitable for air, hydraulic oil or vacuums; available as a single-channel or multi-channel version.

Deublin is a global leader in the design and manufacture of high-performance rotary unions, engineered to transfer fluids and gases reliably between stationary and rotating equipment.

The air, hydraulic oil, and vacuum rotary unions are designed for industrial applications that demand precise sealing, minimal leakage, and long-term operational reliability, even under high speeds and pressures.

Product Range

The Deublin rotary union portfolio for air, hydraulic oil, and vacuum includes:

• Compressed air rotary unions
• Hydraulic oil rotary unions
• Vacuum rotary unions
• Single-passage designs
• Multi-passage designs
• Mechanical seal, O-ring, or carbon seal versions
• Stainless steel, alloy steel, or aluminum constructions

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Technical Specifications

Specifications vary by model and application:

• Media: air, hydraulic oil, vacuum
• Maximum working pressure:
• air / hydraulic oil: up to 350 bar
• vacuum: down to 10⁻³ mbar
• Operating temperature: from -20°C to +120°C (special versions available)
• Maximum rotational speed: up to 20,000 rpm
• Sealing type: mechanical seal, O-ring, carbon seal
• Connections: threaded, flanged, or customized
• Rotation direction: uni-directional or bi-directional

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Classification

Deublin rotary unions for air, hydraulic oil, and vacuum can be classified by:

• Media type
• Pressure range
• Number of passages
• Sealing technology
• Speed capability
• Specific industrial application

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Applications

Typical applications include:

• Industrial pneumatic systems
• Machine tools and CNC machining centers
• Automation equipment
• Rotary hydraulic systems
• Industrial robots
• Packaging machinery
• Vacuum handling and gripping systems

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Key Benefits

• Precise and reliable sealing
• Minimal air, oil, or vacuum loss
• High wear resistance
• Stable performance at high rotational speeds
• Reduced maintenance requirements
• Proven Deublin quality