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Dublin 250 Series Rotary Unions – High Speed Coolant Transfer

Original price was: $280.00.Current price is: $270.00.

  • Max Pressure (Air): 150 PSI
  • Max Pressure (Vacuum): -13.75 PSI
  • Max Flow Rate (Air): Up to 300 CFM
  • Overall Length: Varies by model
  • Rotor Connection: Various options available (e.g., G 1/4″-19)
  • Operating Temperature: Up to 250°F (121°C)
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Description

The Dublin 250 Series rotary unions are engineered for high-pressure hydraulic fluid transfer in applications such as variable pitch sheaves, power steering systems, and industrial machinery. Their balanced mechanical seals prevent leakage and resist wear even under fluctuating pressures and rotational speeds. The self-supported design allows for easy mounting with minimal space requirements, making them ideal for compact hydraulic systems.

Constructed with a lightweight aluminum housing and durable rotor materials, the 250 Series rotary unions offer excellent corrosion resistance and mechanical strength. The low torque design reduces mechanical stress on connected components, enhancing overall system reliability. Additionally, the inclusion of a felt oiler in the seal cavity and an optional relubrication feature ensures long-lasting seal performance, especially in air service environments.

This rotary union series is suitable for a range of hydraulic media, including oils and water-based fluids, and can be customized to meet specific industrial needs. Whether your application involves hydraulic oil transfer, clutch and drive systems, or high-speed rotational equipment, the Dublin 250 Series provides a robust, efficient solution.

Deublin 1005 113 063Key Features & Benefits of Dublin 250 Series rotary unions

Robust Construction

Manufactured with high-strength stainless steel or anodized aluminum for corrosion resistance and mechanical durability.

Leak-Free Performance

Precision-engineered sealing technology ensures zero internal leakage, even under high-pressure and high-speed conditions.

Versatile Media Compatibility

Compatible with a wide range of fluids, including coolant, water, hydraulic oil, and compressed air.

Low-Maintenance Design

Equipped with long-life seals and bearings, reducing downtime and maintenance costs.

Compact & Lightweight

Optimized for space-constrained installations while maintaining maximum flow capacity.

Multiple Port Configurations

Available in single-passage and dual-passage rotary union designs to suit different system requirements.

Dublin 250 Series Large Rotary Unions for Air

ParameterDescription
Model SeriesDeublin 250 Series
Passage TypesSingle / Dual Flow
Operating PressureUp to 200 PSI (13.8 bar)
Maximum SpeedUp to 3,000 RPM
Temperature Range-20°C to +120°C
Seal TypeBalanced Mechanical Seal
Media SupportedWater, Air, Coolant, Hydraulic Oil
Connection TypesBSP, NPT, UNF, Flange Options
Housing MaterialStainless Steel / Aluminum
Shaft MaterialHardened Steel / Ceramic Options
Dublin 250 Series Large Rotary Unions for Air

Applications of the Dublin 250 Series rotary unions

CNC Machining Centers

Reliable for coolant transfer during high-speed spindle operations.

Hydraulic Systems

Ideal for rotary hydraulic actuators and index tables requiring fluid transmission during rotation.

Packaging Machinery

Supports consistent fluid flow in rotating packaging components.

Automation Equipment

Used in robotic arms and rotary indexing tables for efficient media transmission.

Printing and Textile Machinery

Handles thermal oil and air in high-speed rotary dryers and rollers.

Dublin 250 Series Large Rotary Unions for AirDeublin 1102-070-103
The Dublin 250 Series Large Rotary Union for Air is the perfect solution for industries requiring reliable and efficient air transfer systems. With advanced design, durable construction, and versatility across various media types, these rotary unions ensure optimal performance in any application.

Deublin 1005 113 063
Deublin 1005 113 063FAQs

Q: Can the 250 Series be used for hot oil applications?

A: Yes. Select models are rated for high-temperature fluids like thermal oil.

Q: Are replacement seals available?

A: Absolutely. Seal kits are available for all standard models.

Q: What’s the lead time for bulk orders?

A: Standard lead time is 3-5 business days; expedited shipping options are available.